Mathematics College

Plz help me, i will mark u brainliest!!!

Answers

Answer 1

Answer:

Step-by-step explanation:

To find out how much should he drive more = 7/8 - 1/8 = 6/8

6/8

Both have table of 2 in common so

3/4 is the simplest form

Answer 2

Answer:

[tex]\frac{3}{4}[/tex]

Step-by-step explanation:

No. of remaining days = [tex]\frac{7}{8}[/tex] - [tex]\frac{1}{8}[/tex]

If the denominators are the same, you can directly do the working for the numerators while leaving the denominator alone.

[tex]\frac{7}{8}[/tex] - [tex]\frac{1}{8}[/tex] = [tex]\frac{6}{8}[/tex]

6 and 8 both have a common factor of 2, so we can further simplify this fraction.

[tex]\frac{6}{8}[/tex] = [tex]\frac{3}{4}[/tex]

Thus, he must drive for [tex]\frac{3}{4}[/tex] more days.

Related Questions

3 2/4(15×5/6 .........................................

Answers

43.75 aaa decimal form, 43 3/4 as a mixed number.

1/sin10°-√3/cos10°=4

Answers

Answer:

[tex]\frac{1}{\sin \left(10^{\circ \:\:}\right)}\:\:\frac{1}{\sin \:\left(10^{\circ \:\:}\right)}=4[/tex]

Step-by-step explanation:

Given the expression

[tex]\frac{1}{\sin \left(10^{\circ \:}\right)}-\frac{\sqrt{3}}{\cos \left(10^{\circ \:}\right)}=4[/tex]

Taking the left-hand side and solving it

[tex]\frac{1}{\sin \left(10^{\circ \:}\right)}-\frac{\sqrt{3}}{\cos \left(10^{\circ \:}\right)}[/tex]

[tex]\frac{1}{\sin \:\left(10^{\circ \:\:}\right)}=5.76[/tex]

and

[tex]\frac{\sqrt{3}}{\cos \left(10^{\circ \:\:}\right)}=1.76[/tex]

so the expression becomes

[tex]\frac{1}{\sin \left(10^{\circ \:\:}\right)}\:\:\frac{1}{\sin \:\left(10^{\circ \:\:}\right)}=5.76-1.76[/tex]

[tex]=4[/tex]

Thus, we conclude that

[tex]\frac{1}{\sin \left(10^{\circ \:\:}\right)}\:\:\frac{1}{\sin \:\left(10^{\circ \:\:}\right)}=4[/tex]

Bentley wants to ride his bicycle 39.6 miles this week. He has already ridden 8 miles.
If he rides for 4 more days, write and solve an equation which can be used to
determine x, the average number of miles he would have to ride each day to meet his
goal.

Answers

Answer:

Step-by-step explanation:

Using a linear function, it is found that he would have to ride his bicycle 7.9 miles a day to meet his goal.

What is a linear function?

A linear function is modeled by:

y = mx + b

In which:

m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

For this problem, we have that:

The 8 miles he has already ridden is the intercept.The daily average he needs is the slope.

When x = 4, y = 39.6, hence:

39.6 = 4m + 8

4m = 31.6

m = 31.6/4

m = 7.9.

He would have to ride his bicycle 7.9 miles a day to meet his goal.

More can be learned about linear functions at https://brainly.com/question/24808124

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Find the midpoint of GH

Answers

2.3 is the midpoint of this graph

Answer:

2.3 is the mid point of gh

Sheila buys two concert tickets from her friend.
She pays $90 for the two tickets. She looks at the
tickets and sees that each ticket has a face value
of $52.50.
a. How much of a markdown did her friend give
Sheila? Explain how you know.

B. What was the perecent markdown, rounded to the nearst whole percent?

Answers

Answer:

15 because the 2 tickets were originally 105

Step-by-step explanation:

52.50 x 2 = 105 because 52 + 52 = 104 and .50 + .50 = 1 so 104 + 1 = 105

300 feet above sea level??

Answers

Answer:

300

Step-by-step explanation:

if it is 300 feet ABOVE sea level, then it is a positive answer.

you would want to look for the words 'above' or 'below' if it is talking about sea level.

Challenge A bag contains pennies, nickels, dimes, and quarters. There are 50 coins in all. Of the
coins, 12% are pennies and 40% are dimes. There are 5 more nickels than pennies. How much
money does the bag contain?
The bag contains $

Answers

Answer:

$5.86

Step-by-step explanation:

12% of 50=6 pennies

40% of 50= 20 dimes

6+5= 11 nickels

11+20+6= 37 coins

50 total coins-37= 13 quarters

13 quarters = $3.25

20 dimes = $2.00

11 nickels = $0.55

6 pennies = $0.06

$3.25+$2.00+$0.55+$0.06=$5.86

Answer:

$5.86

Step-by-step explanation:

One year Roger had the lowest ERA (earned-run average, mean number of runs yielded per nine
innings pitched) of any male pitcher at his school, with an ERA of 3.49. Also, Kate had the lowest ERA of any female pitcher at the school with an ERA of 3.44. For the males, the mean ERA was 3.805 and the standard deviation was 0.671. For the females, the mean ERA was 3.967 and the standard
deviation was 0.604. Find their respective z-scores. Which player had the better year relative to their
peers, Roger or Kate? (Note: In general, the lower the ERA, the better the pitcher.)

Answers

Answer:

id. k

Step-by-step explanation:

I. dk

No I need 54 inches of wood to build a picture frame. if the wood cost $2.50 a foot, how much will be pay?

Answers

Answer:

135

Step-by-step explanation:

2 x 54 = 108 and .50 x 54 = 27 so 108 + 27 = 135

Evaluate the given expression. Subscript 10 Baseline C Subscript 4 Baseline times Subscript 4 Baseline C Subscript 2 a. 1,260 c. 1,275 b. 1,278 d. 1,270

Answers

Answer:

The answer is A: 1,260

Step-by-step explanation:

I took the test on Edge

Answer:

A-1,260

Step-by-step explanation:

Given m| n, find the value of x.

Answers

Answer:

45°

Step-by-step explanation:

x° = (180 - 135)°

= 45°

Hope this helps

With interior alternate angles and adjacent angles concept, the value of x from the given parallel lines is 45°.

Given that, straight line m parallel to straight line n and t is the transversal.

When a transversal connects two coplanar lines, alternate interior angles are created. They are located on the transverse sides of the parallel lines, but on the inner side of the parallel lines. At two different locations, the transversal passes through the two lines that are coplanar.

Here, y=135° (Interior alternate angles are equal)

Now, y°+x°=180° (Adjacent angles on straight line)

135°+x°=180°

x°=45°

Therefore, the value of x from the given parallel lines is 45°.

To learn more about the alternate interior angles visit:

brainly.com/question/28380652.

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A tree measures 40.5 feet. Over the next 7 1/2 year, it grows to a height of 78 feet. During the 7 1/2 years, what was the average yearly growth rate of the height of the tree?

Will give brainlist.

Answers

Answer:

10.4 feet per year

Step-by-step explanation:

Divide the tree growth by the number of years.

78/7.5=10.4

Suppose you and 10 friends are taking a road trip for Spring Break. You plan on visiting multiple museums, national parks, and shopping locales along this trip. Your
road trip will a total of 10 days. You drive a total distance of 5000 miles. Some of the drive your average speed was 45 mph. While the rest of the trip was 70 mph.
1. How many hours were you driving each speed? Round 3 decimals
2. What distance did you drive for each speed? Round 3 decimals

Answers

Using the relation between velocity, distance and time, and supposing the group travels for 8 hours a day, it is found that:

1. You were driving 24 hours at 45 mph and 56 hours at 70 mph.

2. You drove 1080 miles at 45 mph and 3920 miles at 70 mph.

What is the relation between velocity, distance and time?

Velocity is distance divided by time, that is:

v = d/t.

For the first part, we have that:

The velocity is of 45 mph.The distance is of d.The time is of t.

Hence:

v = d/t

45 = d/t

d = 45t.

For the second part, we have that:

The velocity is of 70 mph.The distance is of 5000 - d.The time is of 80 - t. (10 days of 8 hours driving = 80 hours).

Hence:

70 = (5000 - d)/(80 - t).

d = 45t, hence:

70 = (5000 - 45t)/(240 - t).

5000 - 45t = 5600 - 70t

25t = 600.

t = 600/25

t = 24. -> (80 - 24) = 56.

d = 45t = 45 x 24 = 1080 -> (5000 - 1080) = 3920.

Hence:

1. You were driving 24 hours at 45 mph and 56 hours at 70 mph.

2. You drove 1080 miles at 45 mph and 3920 miles at 70 mph.

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while in Manchester, england, chelsea bought a sweater for bitirsh pound 28 . when she returned, she saw the same sweater for C$38. which sweater cost more by how much in canadian dollar show your work pls

Answers

The sweater that cost more is the sweater bought in Manchester. It is more expensive by C$7.40.

Which sweater is more expensive?

The exchange rate is the price at which one currency is exchanged for another currency. For example, if the exchange rate of the pound and Canadian dollars is 1.60. It means that 1 unit of the pound would buy 1.60 of the Canadian dollars.

The first step is to convert the cost of the sweater that is priced in the British pound to Canadian dollars.

The exchange rate : 1 British pound = 1.6215 CAD

28 X 1.6215 = 45.402

Difference in price = 45.402 - 38 = C$7.402

Based on the above calculation, the sweater when converted from the British pound to the Canadian dollars, it is more expensive to buy the sweater in Manchester than it is to buy it in Canada.

Please find attached the exchange rate used to answer this question. To learn more about exchange rate, please check: https://brainly.com/question/25780725

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PLS HELP Solve 4 • (−6). (20 points)

a
−42

b
−24

c
10

d
24

Answers

It’s 24

How I found the answer:

4x(-6)

-24x

PLEASE HELP!!!!!!!!!!!!!!!!!!!!

Answers

X= 4-2
X= 6-4
X = 8-6
Is this what u want?

1: 5-3 2: 3-1 3: 1+1

this is a bit confusing for me, can someone explain, or just do it for me to show? Thank you!

Answers

Answers:

Row 1: 4 sig digits, 1.705*10^4

Row 2: 5 sig digits, 1.9080*10^-5

Row 3: 300, 1 sig digit

Row 4: 0.00246, 3 sig digits

The Martin family and the Kelly family each used their sprinklers last summer. The water output rate for the Martin family's sprinkler was 30L per hour. The water output rate for the Kelly family's sprinkler was 35L per hour. The families used their sprinklers for a combined total of 60 hours resulting in a total water output of 1925L. How long was each sprinkler used?

Answers

Answer:

The Martins used their sprinkler for 35 hours, while the Kellys used their sprinkler for 25 hours.

Step-by-step explanation:

As the Martins and the Kellys used their sprinklers for 60 hours combined last summer, and the water output rate of the Martins' sprinkler is 30 liters per hour, while the Kelly's is 35 liters per hour To determine how many hours each family used their sprinklers, knowing that in total 1925 liters of water were used, the following logical reasoning must be carried out:

There is a 5 liter difference between the Kelly sprinkler and the Martin sprinkler. If both used 30 liters of water per hour, for 60 hours 1800 liters (30 x 60) would have been used. Therefore, there is an excess of 125 liters that corresponds to an excess of consumption, attributable to the Kelly sprinkler, which consumes 5 liters more of water per hour than the Martin's. Thus, since 125/5 equals 25, in total the Kellys used their sprinkler for 25 hours, while the Martins did it for 35 hours.

This reasoning is proved with the following calculation:

25 x 35 = 875

35 x 30 = 1,050

875 + 1,050 = 1,925

Instructions: Find the missing side lengths. Leave your answers as radicals in simplest form.

Help quick.

Answers

Answer: y=8 and x=8 radical 3

Find the equation of the line that contains a slope of 3/4 and a 'y'-intercept of (0,3). Write the answer in slope-intercept form.

Answers

Answer:

Step-by-step explanation:

y=-3/4 x-3

Absolute value of 13+14

Answers

Answer:

Step-by-step explanation:

13 + 14 = 27

Answer: -13+-14

Step-by-step explanation: the Absolute value is the opposite value of something like 24-57 the absolute value of that would be -24-(-57)

Allen went out to dinner and hls total bill
came to $22.14. The tax on his meal was
8%, or $1.64. What was the subtotal of
his dinner?

Answers

$20.50 because 22.14-1.64=20.50

Use the Binomial Theorem to expand each binomial (2x-1)^6

Answers

64x^6 - 192x^5 + 240x^4 - 160x^3 + 60x^2 - 12x + 1

PLEASE HELP!!! ALGEBRA 2A

Answers

THE ANSWER IS B :)))

Tyler and his children went into a bakery and will buy cupcakes and donuts. He must buy a maximum of 11 cupcakes and donuts altogether. Write an inequality that would represent the possible values for the number of cupcakes purchased, cc, and the number of donuts purchased, d.d.

Answers

Answer:

0 < cc + dd ≤ 11

Step-by-step explanation:

≤ means equal to or less than.

It has to be more than zero, obviously.

Answer:

c+d≤11

Step-by-step explanation:

welcome

Jocelyn has read 160 pages in a book. This is of the entire book. How many pages
does the book have?

Answers

you need more information to finish this question. You can't get an answer for a math question like this one with that little information.

Answer:

Step-by-step explanation:

lol it means 4/5,

your in rsm i aleready know

The half-life of Palladium-100 is 4 days. After 20 days a sample of Palladium-100 has been reduced to a
mass of 5 mg.
What was the initial mass (in mg) of the sample?
What is the mass (in mg) 4 weeks after the start?
You may enter the exact value or round to 4 decimal places

Answers

Answer:

A = (Ao)(0.5^(t/t1.2))

1 = (Ao)(0.5^(20/4)) = Ao(0.03125)

Ao = 1/0.03125 = 32mg

5 weeks = 5(7) = 35 days

A = 32(0.5^(35/4)) = 32(0.0232) = 0.074mg

Step-by-step explanation:

What is the greatest common factor of 12a and 9a2

Answers

Answer:

For these types of problems, You must look at the coefficients and variables separately and find the GCF for each. Then, combine the two

First, take 12 and 9

Factors of both

9- 1, 3, 9

12- 1, 2, 3, 4, 6, 12

So the gcf of 12 and 9 is 3

Now do the variables a and a^2

a^2 is just a twice

The GCF is a

Now combine a and 3

Answer: GCF is 3a

Answer:

GCF is 3a

Step-by-step explanation:

I just know LOLLL

Did ancient mathematicians use a ruler to determine the values of sine and cosine in a circle?
No answer needed! Just take points.

Answers

Answer and Explanation:

No, they did not use a ruler to compute the values of trig functions. They used geometry to prove theorems about trigonometry, then used those results and ordinary computations involving addition, subtraction, multiplication, division, and square roots to determine the entries in trigonometric tables.

Claudius Ptolemy (85 C.E.–165) created the first trig tables that we know of, and he included proofs of the theorems he used. One of the main theorems he used is what is now called Ptolemy’s theorem.

In order to prove his sum and difference forumlas, Ptolemy first proved what we now call Ptolemy’s theorem.

Ptolemy’s theorem. The product of the diagonals of a cyclic quadrilateral is equal to the sum of the products of the opposite sides.

A cyclic quadrilateral is a quadrilateral inscribed in a circle as ABCD. Ptolemy’s theorem says:

AC ⋅ BD = AB ⋅ CD + AD ⋅ BC

When one of the diagonals (like ) is a diameter of the circle, that gives you a way to determine the trig functions for sum and differences of angles.

Sometimes, the sum and difference formulas for sine and cosine are still called Ptolemy’s formulas.

sin(α + β) = sin α cos β + cos α sin β

cos(α + β) = cos α cos β − sin α sin β

sin(α − β) = sin α cos β − cos α sin β

cos(α − β) = cos α cos β + sin α sin β

Ptolemy started with angles he knew the trig functions for. These included angles in various isosceles triangles: 45°-45°-90°, 60°-60°-60°, and 36°-72°-72°, the last one described by Euclid in Proposition IV.10. That gave him the trig functions for 36°, 60°, and 90°. Using half-angle formulas (mentioned by Hipparchus (190–120 B.C.E.), he could compute trig functions for half of those angles and a quarter of those angles. Then using the sum and difference formulas he computed the rest of the numbers in his trig table.

Hope this helps! :)

Jack wants to model a situation where the perimeter of the rectangle to the right is 6 feet plus or minus 1.5 feet. Because he is modeling a length "plus or minus" another length, he decides to use an absolute value equation for his model. Do you agree with his decision? Explain your reasoning.

Answers

The absolute value of the equation will not work because the value of x would have to be negative for the perimeter to be 6 ft plus or minus 1.5 ft.

What is the perimeter of the rectangle?

The perimeter of the rectangle is given as:

Perimeter = 2(Length + Breadth)

The perimeter of a rectangle is 6 feet plus or minus 1.5 feet.

So, we have:

Perimeter = 2(Length + Breadth) = 6 feet ± 1.5 feet.

Then Substitute values for length and width

2(Length + Breadth) = 6 feet ± 1.5 feet.

2(4 + x) = 6 feet ± 1.5 feet.

Now,

2(4 + x) = 6 feet + 1.5 feet.

8 + 2x = 6.5 ft

2x = 6.5 - 8

x = -0.25 ft

2(4 + x) = 6 feet - 1.5 feet.

8 + 2x = 4.5 ft

2x = 4.5 - 8

x = -1.75ft

Here Both values of x are negative.

This means that the absolute value model can't work, because a rectangle cannot have a negative dimension.