Answers
Answer:
The answer is D) 12
There are two trips, but the distances are the same.
Trip #1: uphill, at 9 mph
Trip #2: downhill at 18 mph
Total round trip is 30 minutes.
Since he's going half the speed uphill, Trip #1 takes twice as long as Trip #2.
So if the time for Trip #2 is x, then the time for Trip #1 is 2x.
x + 2x = 30, so x=10
Trip #2 takes 10 minutes.
Trip #1 takes 20 minutes.
Trip #1: 20 minutes at 9 mph = 3 miles
Trip #2: 10 minutes at 18 mph = 3 miles
This means his school is 3 miles away.
If you want an equation to solve,
Let d = distance to school. We use d = r·t formula to set up that t = d/r
let t1 = time going to school and t2 = times going home
t1 + t2 = 30 and t1 = d/9 and t2 = d/18.
d/9 + d/18 = 0.5 (it's 0.5, because we need the time in hours)
mutiply both sides b 18
2d + d = 9
3d = 9
d = 3
Related Questions
Pamela is 5 years older than Jiri. The sum of their ages is 77. What is Jiri's age?
Answers
Answer:
41?
Step-by-step explanation:
I need help fast please
Answers
Answer:
point H is in quadrant II
ELPP PLS I SUCK AT MATHH D:
I didn't mean to click 1 but once you click it you cant unclick you can only change your answer
Answers
Answer:
If you were really that bad at math make it more than 6+ points lmoa and the answer is 1
Step-by-step explanation:
Find the slope of the line through each pair of point
Answers
Answer:
what are the pair of points?
Explain why it does not matter which point you choose when writing the
equation of the line in point-slope form, given two points.
Answers
Answer:
because, it will completely change the slope
Step-by-step explanation:
It does not matter which point you choose when writing the
equation of the line in point-slope form because the slope of the line remains same.
What is a slope ?A slope can be thought of as rate of change of y axis with respect to x axis.
We have been asked in this statement that why it doesn't matter that which point we choose when writing the equation in point slope form.
Let us understand this with an example,Suppose we have two pair of points. (x₁,y₁) = (2,3) and (x₂,y₂) = (5,9).
We know slope(m) is = (y₂-y₁)/(x₂-x₁).
Slope(m₁) = (9-3)/(5-2)
= 6/3
= 2.
Now if interchange the points (x₁,y₁) = (5,9) and (x₂,y₂) = (2,3).
Slope(m₂) = (3-9)/(2-5)
= -6/-3
= 2.
So, even when interchanging the points the slope m₁ = m₂ this is the reason why it doesn't matter which point we choose.
learn more about slope here :
https://brainly.com/question/837699
#SPJ2
Convert 62 miles to hour to feet to second
Answers
62 Miles per Hour =
90.933333 Feet per Second
(rounded to 8 digits)
Please help this is algebra one
Answers
Answer:
B
Step-by-step explanation:
When x is equal to 0, you look at the graph and you get y is equal to 3, which is choice B
find three fraction larger than√2 and less than√3
Answers
Step-by-step explanation:
the answer is in the image above
HELP ASAP!!! 2.) Can you give a real world example of how we use positive and negative numbers? Make sure you can explain the meaning of 0.
Answers
Answer and explanation:
Temperature:
If it was -5°C, you know that it is very cold and below freezing point (0°C), but if it was 20°C you know the weather is quite warm.
0°C is freezing point and is used as a reference point to be able to tell if the temperature is warm or not.
In the triangle below, suppose that mZL=(x+3)°, mZ M=(5x-7)°, and m N= (2x).
Find the degree measure of each angle in the triangle.
N
(2x)
mL =
日。
х
M
(5x - 7).
m M =
•
•
mZN =
(x + 3)°
Answers
Answer:
GivenTriangle ABC is right angled at A.
[tex]m\angle B=(5x+7)^∠B=(5x+7)∘[/tex]
[tex]m\angleC=(4x+29)^∠C=(4x+29) [/tex]
To find:
The degree measure of each angle in the triangle.
Solution:According to the given information,
[tex]m\angleA=90^\circm∠A=90[/tex]
[tex]m\angleB=(5x+7)^\circm∠B=(5x+7) [/tex]
[tex]m\angleC=(4x+29)^\circm∠C=(4x+29) ∘[/tex]
Now,
[tex]m\angleA+m\angleB+m\angleC=180^\circm∠A+m∠B+m∠C=180 ∘[/tex]
(Angle sum property)
[tex]90^\circ+(5x+7)^\circ+(4x+29)^\circ=180^\circ90∘+(5x+7)∘+(4x+29) ∘ =180[/tex]∘
[tex](9x+126)^\circ=180^\circ(9x+126)∘ =180∘[/tex]
9x+126=1809x+126=180
9x=180-1269x=180−126
9x=549x=54
Divide both sides by 9.
[tex] \sf{x=\dfrac{54}{9}x=954}[/tex]
x=6x=6
Now,
[tex]m\angle A=90^\circm∠A=90
∘[/tex]
[tex]m\angleB=(5(6)+7)^\circm∠B=(5(6)+7) [/tex]
∘
[tex]m\angle B=37^\circm∠B=37[/tex]
∘
[tex]m\angleC=(4(6)+29)^\circm∠C=(4(6)+29)[/tex]
∘
[tex]m\angle C=53^\circum \: ∠C=53[/tex]
Therefore,
The measures of ∠A, ∠B, ∠C are 90°, 37°, 53° respectively.
Answer:
26°, 108°, 46°Step-by-step explanation:
Assumed the given is:
ΔLMN with angle measures of (x + 3), (5x - 7) and 2x.We need to find the angle measures in degrees.
We know the sum of interior angles is 180:
x + 3 + 5x - 7 + 2x = 1808x - 4 = 1808x = 184x = 184/8x = 23Find the angle measures:
m∠L = x + 3 = 23 + 3 = 26m∠M = 5x - 7 = 5*23 - 7 = 108m∠N = 2x = 2*23 = 46determine the values of a,b and cfor the quadratic equation 3x2-5x+6=0
Answers
Step-by-step explanation:
ax² + bx + c ≡ 3x² - 5x + 6
∴ a = 3
b = -5
c = 6
Name the polynomial by degree and number of terms.
-6b^2- 6b - 4
a) constant monomial
b) quadratic monomial
c) quadratic trinomial
d) cubic trinomial
Answers
Answer:
c
Step-by-step explanation:
the polynomial is formed by 3 monomials and the incognit is quadratic
4p+6qp wdhwaudwhduwhdw
Answers
Answer:
10p
Step-by-step explanation:
please help ill give brainliest plz give me a simple answer
Answers
Answer:
Bottom answer
Step-by-step explanation:
This says the absolute value of a number is greater than 3.
First, any positive number greater than 3 will work.
But since they also say the absolute value, any negative lower than -3 will also work. For example, the absolute value of -4 is 4 which is greater than 3.
However, it cannot be 3 or -3 since it must be greater than 3. If you notice the bottom answer has an OPEN circle on 3 and -3 which means those two numbers are not included in the answer. It is anything greater than 3 and anything less than -3 but not including those two numbers.
Answer:
4th option
Step-by-step explanation:
d | > 3
The solution is going to be all the points that are more than 3 units away from zero , but not equal to zero
- 4 and 4 are more than 3 units away from zero
The required graph is one with an open circle at - 3 and 3 with
arrow pointing left from - 3 and arrow pointing right from + 3
This is indicated on the 4th graph
What is the slope of the line that passes through (-4, 5) and (2, -3)?
Answers
Answer:
[tex]m=\frac{-4}{3}[/tex]
[tex]y=\frac{-4}{3}x -\frac{1}{3}[/tex]
Step-by-step explanation:
Use the Slope formula...
[tex]\frac{-3-5}{2-(-4)}[/tex]
[tex]\frac{-8}{6} = \frac{-4}{3}\\\frac{-4}{3} = m[/tex]
Plug the slope into the Point-Slope formula...
[tex]y -(5) = \frac{-4}{3}(x-(-4)) \\y+5=\frac{-4}{3}x +\frac{-16}{3}\\y=\frac{-4}{3}x +\frac{-1}{3}[/tex]
y = 2/5x -1/2 + y = -1/3x + 2/3 combine like terms
Answers
Answer:
2
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
Have a nice rest of your day
#Nova
Compare 9/15 and 10/15
Answers
Answer: 9/15 < 10/15
Step-by-step explanation: 9/15 < 10/15
If c-d=7 and c=3-8i what is d
a) -4+8i
b)-4-8i
c)4+8i
d)4-8i
Answers
Answer:
Step-by-step explanation:
c - d = 7
c = 3 - 8i Substitute into the top equation
3 - 8i - d = 7 Subtract 3 from both sides
- 8i - d = 7 - 3 Combine
-8i - d =4 Add 8i to both sides
-d = 4 + 8i Multiply through by -1
-1*-d = -4 - 8i
d = - 4 - 8i
Looks like B is the answer.
suppose that 11 inches of wire costs 55 cents how many inches of wire can be bought for 25 cents
Answers
Answer:
5 inches of wire costs 25 cents.
Step-by-step explanation:
To answer this question, we want to find the unit price per inch of wire. Therefore, we need to divide the cost of the 11 inches (55) by the length of the wire (11):
55 / 11 = 5
So, 1 inch of wire costs 5 cents.
Now, to see how many inches can be bought with 25 cents, multiply 5 times both the 1 inch and 5 cents, which are the unit price to get:
5 inches of wire costs 25 cents.
Hope this helps :)
plz tell the solution for this Q
Answers
Answer:
rational
Step-by-step explanation:
a is the answer
Help with trigonometry
Use pythagorean theorem to find the length of x
Answers
Answer:
x =√969
Step-by-step explanation:
AC²=AB²+BC². (Formula)
(35)²=(16)²+BC²
1225-256=BC²
969=BC²
BC=√969
Which of these tables represents a function??
Answers
Answer:
The first table
Step-by-step explanation:
You have to make sure that x is unique throughout.
First Table: the inputs are 2, 4, 6, 7
each input value is different or unique
Second Table: input values are 3, 5, 3, 5
three and five repeat themselves, so there is not a function
Third Table: input values are -2, 0, 1, -2
negative 2 repeats itself so it is not unique
Which table represents a linear function?
o
Х
1
2
3
4
у
5
9
5
9
O
o
х
1
2
3
4
y
-5
10
-15
20
0
х
1
2
3
4
y
5
10
20
40
X
1
2.
y
-5
0
Answers
Answer:
huhhh do you got a photo or sth
Linear functions are used to represent tables that have constant rate of change.
Table 4 represents a linear function
From the given tables, only table 4 represent a linear function.
This is so because as the values of x changes by 1, the corresponding values of y changes by 5.
The table is represented as:
x y
1 -5
2 0
3 5
4 10
Hence, table 4 represents a linear function
Read more about linear functions at:
https://brainly.com/question/14323743
Janice is considering two restaurants for a party. The first restaurant charges $15 per person plus a flat rate of $175 to reserve a party room. The second restaurant charges $9 per person plus a flat rate of $329. Select an equation that shows the total charge from the two restaurants is the same. Let x be the number of people.
Answers
Answer:
The answer is 15x + 175 = 9x + 329.
Step-by-step explanation:
Hope this helps!
Solve for r
K=3r-s
r=?
Answers
Answer:
K=3r-s
K+s=3r
K/3+s/3=r
Step-by-step explanation:
k=3r-s
k+s=3r
k+s/3 = r
r = k+s/3
One of Kylie's homework problems is to convert 30 centimeters to feet, given that 2.54 centimeters = 1 inch. Here is her
work:
30 centimeters
2.54 centimeters 12 inches
= 30 x 254x12=914 4 feet
1 inch 1 foot
Which of the following statements is true?
Kylie's conversion is correct
Kylie's conversion is incorrect because she set up the conversion ratios incorrectly.
Kylie's conversion is incorrect because she multiplied incorrectly
Kylie's conversion is incorrect because her conversion ratios are not equivalent to 1.
Answers
Answer:
She set up the conversion ratios incorrectly.
Step-by-step explanation:
30 cms
= 30 / 2.54 inches
= 30 / 2.54 / 12feet
= 0.984 feet.
what is the answer ?????????
Answers
Answer:10
Step-by-step explanation: dd
Let f(x) = x − 3 and g(x) = x + 11. Find f(x) ⋅ g(x).
x2 − 8x − 33
x2 − 8x + 14
x2 + 8x + 14
x2 + 8x − 33
Answers
(x-3)(x+11)
x^2 + 11x - 3x - 33
x^2 + 8x - 33
Solution: D
Answer:
D) x^2 + 8x - 33
Step-by-step explanation:
I took the quiz and got a 100%
Find 6.8x1.9 using partial products. Draw an area model to show the partial
products.
Answers
Answer: i do not now this one
Step-by-step explanation:
Hilda adds 5 to a number, then multiplies the sum by negative 2. The result is 6.
Answers
Answer:
The answer would be negative 8 because -8 + 5 = -3 and -3 x -2 = 6
Step-by-step explanation:
The answer would be negative 8 because -8 + 5 = -3 and -3 x -2 = 6