Mathematics College

please help me please i really need help please

Answers

Answer 1

Answer:

-5a+3b

Step-by-step explanation:

3a+2b-8a+b=3a-8a+2b+b=-5a+3b

Answer 2

Answer:

-5a+3b

Step-by-step explanation:

1. Re-write the numbers next to their common variables 3a-8a+2b+b

Then add!

Related Questions

You are given the following equation: (x+3)^2 + (y+9)^2 = 144 What is the
(h,k)

Answers

Answer:

Step-by-step explanation:

Equation of circle: (x - h)² + (y -k)² = r²

(x+ 3)² + (y + 9)² = 144

(x+ 3)² + (y + 9)² = 12²

h = -3 ; k = -9

THIS ONE IS EASY I WILL MAKE BRAINLIEST

Answers

Answer:

Step-by-step explanation:

the shapes are the same, but bigger so you literally just find the same line from shape 1 to shape 2, but bigger

Answer:

the correct side is OP

Step-by-step explanation:

Joey pays $35.85 each month for his new stereo what does he pay each year

Answers

ANSWER
$430.20

STEP BY STEP
there are 12 months in a year so multiply that number by 12.

Hope this helps

Answer:

$430.20

Step-by-step explanation:

35.85 x 12= 430.20

A billiard ball bounces off the sides of a rectangular billiards table in such a way that 1= 23,
24 = 26, and Z3 and 24 are complementary. If m_1 = 27°, find the measure of all the other angles.
1
3
2
m/2 = =
4
m23 =
5
6
m24 =
m25 =
m26 =

Answers

Oh okie so I can see you in the first place is ow

30 is 60% of
due today

Answers

Answer:

30 is 60% of 50.

Step-by-step explanation:

30 ÷ 60% = 50

Find the values of x and y.

Answers

Answer:

x = 67

y = 169

Step-by-step explanation:

We know that (x-1) + 52 + (y-7) = 180 because they're all on the same straight line. We also know that x-1 = 66, because they are alternate interior angles.

Solve for x:

x-1 = 66

x = 67

Now solve for y:

(67-1) + 52 + (y-7) = 180

y = 169

Angle x measures 42•. Find measure of angle y.

Answers

Answer:

Step-by-step explanation:

Find three consecutive integers such that that product of the first and third is one
less than 22 times the second integer.

Answers

Answer:

n = the first

n + 1 = the 2nd

n + 2 = the 3rd

n(n + 2) - (n + 1) = 10(n + 2) + 1

n2 + 2n - n - 1 = 10n + 20 + 1

n2 - 9n - 22 = 0

(n - 11)(n + 2) = 0

If two factors = 0, at least one must = 0.

n - 11 = 0

n = 11

11,12,13

n + 2 = 0

n = -2

-2,-1,0

X-3y=15 and y=-3x+4 determine if the lines are parallel,perpendicular,or neither

Answers

Answer:

neither parallel or perpendicular.

Step-by-step explanation:

Answer:

3 x + y = 16

Step-by-step explanation:

Here are some fractions.
10/15
4/6
12/18
10/16
16/24
One of these fractions is NOT equivalent to
2/3

a) Which fraction?

b) Work out 1/8 + 3/4

Give your answer in its simplest form.

Answers

a. 10/15
b. 7/8
those r the answers

Answer:

10/16 is not equivalent to ⅔.

⅛+¾=⅞

Step-by-step explanation:

To simplify to simplest form find the GCF for both and divide on each side.

[tex] \frac{10}{15} = \frac{2}{3} [/tex]

the GCF is 5, so you divide the numerator and denominator by 5 to get 2/3.

[tex] \frac{4}{6} = \frac{2}{3} [/tex]

When you divide the numerator and denominator by 2 (GCF) it would be ⅔.

[tex] \frac{12}{18} = \frac{2}{3} [/tex]

when you divide both the numerator and denominator by 6 (GCF) you get ⅔.

[tex] \frac{10}{16} = \frac{5}{8} [/tex]

when you divide the numerator and denominator by 2 (gcf) you get ⅝.

therefore, 10/16 is not equivalent.

[tex] \frac{1}{8} + \frac{3}{4} = [/tex]

Find the LCM

Least Common Multiple is 16.

8: 8, 16

4: 4, 8, 12, 16

[tex] \frac{2}{16} + \frac{12}{16} [/tex]

for ⅛ you multiply the numerator and denominator by 2 to get 2/16. do the same with 3/4 but with 4 to get 12/16

[tex] \frac{2}{16} + \frac{12}{16} = \frac{14}{16} [/tex]

you can simplify by dividinv both sides by 2 to get 7/8.

HELP ME PLEASE!!!!!!!!!!!

Answers

Answer:

9.y=Mx+b

Y= 2/5x+4

10. y=Mx+b

Y=4x-5

Step-by-step explanation:

Answer:

9) [tex]y=\frac{2}{5} x+4[/tex]

10) [tex]y=4x-5[/tex]

Step-by-step explanation:

Slope-intercept form is [tex]y=mx+b[/tex] where [tex]m[/tex] is the slope and [tex]b[/tex] is the y-intercept, or the value of y when the line crosses the y-axis.

Question 9

[tex]y=mx+b[/tex]

The question tells us that the slope of the line is [tex]\frac{2}{5}[/tex]. Because the slope is [tex]m[/tex], plug [tex]\frac{2}{5}[/tex] into the equation as [tex]m[/tex].

[tex]y=\frac{2}{5} x+b[/tex]

Then, it tells us that the y-intercept is (0,4). Recall that the y-intercept is the value of y when the line crosses the y-axis. The value of y in the point (0,4) is 4. Because the y-intercept is [tex]b[/tex], plug 4 into the equation as [tex]b[/tex].

[tex]y=\frac{2}{5} x+4[/tex]

Question 10

[tex]y=mx+b[/tex]

First, we must calculate the slope using the slope equation:

[tex]\frac{y_2-y_1}{x_2-x_1}[/tex] when the given points are [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]

The given points are (0,-5) and (2,3). Plug those into the equation.

[tex]\frac{3-(-5)}{2-0}[/tex]

Two negatives make a positive

[tex]= \frac{3+5}{2-0}\\= \frac{8}{2} \\= 4[/tex]

Therefore, the slope of the line is 4. Plug 4 into the original equation as [tex]m[/tex].

[tex]y=4x+b[/tex]

Now, we can find the y-intercept by simply looking at the graph. The line crosses the y-axis at the point (0,-5). Therefore, the y-intercept is -5. Plug -5 into the equation as [tex]b[/tex].

[tex]y=4x+(-5)\\y=4x-5[/tex]

I hope this helps!

Find the sum to 40 terms of the arithmetic sequence below. Please show your
work.
14+23+32

Answers

Answer:

7580

Step-by-step explanation:

The formula for the sum of an arithmatic sequence is

[tex]\frac{n}{2} (a_{1} + a_{n})[/tex],

where n = total number of terms (in this case 40)

[tex]a_{1}[/tex]= the first term (in this case 14)

and [tex]a_{2}[/tex] = the last term (we will need to find this)

to find the last term, we can use this formula:

[tex]a_{n} = a_{1} + (n-1)d[/tex]

where d is the difference between each term (in this case 9, because 23 - 14 = 9, and 32 - 23 = 9)

thus, [tex]a_{n}[/tex] = 14 + (40 - 1)9 = 14 + 39*9 = 14 + 351 = 365

plug this back into the first formula to get

Σ = [tex]\frac{40}{2}[/tex] (14 + 365) = 20(379) = 7580

1). Solve for n n - 72 = 83 *
Helpppppppppp

Answers

Answer:

N=155 I am pretty sure thats the answer

hey i need help pls be honest. WILL GIVE BRAINLIEST!!!!!!!!

Answers

12 x 12 = 144
20 x 12 = 240
=384

ANSWER: 384

what is an equivalent expression to 2x+10x

Answers

Answer:

=12x

Step-by-step explanation:

The sum of eight and twice a number is 42

Answers

Answer:

8 + 2n = 42

Step-by-step explanation:

the sum of eight: ___+ 8

and twice(2) a number(could be any variable but for now i choose n): 2n + 8

is 42 (literally mean it equals 42): 2n + 8 = 42

10) La diferencia entre 17 y 1.234 es :

Answers

Answer:

15.766

Step-by-step explanation:

17 menos 1.234 es 15

Х?
When a side of the triangle is 55°

Answers

Answer:

Step-by-step explanation:

180 - 55 -55 = 70

50 points! I need help fast! Random answers will be reported! I will mark brainliest to the correct answer :)

Answers

Answer:

1) yes, SAS

2) No, there is no SSA theorem

Step-by-step explanation:

1) PR is shared between the two triangles so you know by Side-Angle-Side

2.2.12 In the design of an electromechanical product, 12 com- ponents are to be stacked into a cylindrical casing in a manner that minimizes the impact of shocks. One end of the casing is designated as the bottom and the other end is the top. a. If all components are different, how many different designs are possible

Answers

Answer:

479,001,600 different designs are possible

Step-by-step explanation:

To solve this question, we want to know in how many ways 12 elements can be arranged.

Number of possible arrangements of x elements:

The number of possible arrangments of x elements is given by:

[tex]A_{x} = x![/tex]

In this question:

12 elements. So

[tex]A_{12} = 12! = 479001600[/tex]

479,001,600 different designs are possible

The Question is in the attachment below

Answers

Answer:

Step-by-step explanation:

It is J I’m pretty sure

explain how to solve the equation 7s=28

Answers

divide 7 by both sides and it should be s=4

Pls help me I will give brainliest

Answers

Answer:

Step-by-step explanation:

a^8/c

Answer:

a^8/c

Step-by-step explanation:

Can I pls get the Brainlist

A helicopter is planning a route in a straight line from the top of Mount Whitney to Death Valley. (These two locations are in California and are the highest and lowest points respectively in the continental United States. They are only about 85 miles apart.) The helicopter will start at the top of Mount Whitney at an elevation of 14,505 feet and fly to the Badwater Basin (282 feet BELOW sea level). During its flight, the helicopter descends at a rate of 493 feet per minute, and the trip will take about 30 minutes.

Write an equation that relates the helicopter's elevation (E) to the travel time (t).

Question 3 options:

E=−493t+14787

t=14505−493E

E=14505−493t

E=282+14505t

Answers

The linear function that relates the helicopter's elevation (E) to the travel time (t) is:

E = −493t+14787

What is a linear function?

A linear function is modeled by:

[tex]y = mx + b[/tex]

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.

In this problem:

The helicopter descends at a rate of 493 feet per minute, hence [tex]m = -493[/tex].It flies from an elevation of 14,505 feet to an elevation of 282 feet BELOW sea level, hence the distance it travels in feet is [tex]b = 14505 + 282 = 14787[/tex]

Hence, the model is:

E=−493t+14787

You can learn more about linear functions at https://brainly.com/question/13967935

Answer:

E=−493t+14787

Step-by-step explanation:

just got it right on the test

Please answer all these questions for me for day 4.

Answers

(a)6x-28=4x+18
2x=46
x=23

(b)75=11x-2
77=11x
7=x

(c)x+139=132
x=-7

Mike read 18 books. This was 4 fewer than twice the number that Jeff
read. How many books did Jeff read?

Answers

Answer:

i think 13

Step-by-step explanation:

14 bro trust I’m drippy

I NEED HELP!! (100 POINTS)

Kian wants to solve the equation 2x = -2x + 4. How could he use graphs to solve this equation?

Drag statements into order to complete an explanation.

Answers

Answer:

x = 1

Step-by-step explanation:

Given equation

2^x = -2x + 4

To solve graphically, following steps required

1. Graph the function

y = 2^x

2. Graph the function

y = -2x + 4

3. Identify any intersection of the lines

4. Take the x-coordinates of the intersection points and record as solution

See attached, the answer and the solution of the given equation

The solution is

x = 1

Answer:

Graph the curve that models 2^x.

Graph the line that models -2x+4.

Identify all points of intersection of the two graphs.

Solutions to the equation are the x-coordinates of points of intersection.

Which amount is greater, 5 feet or 2 yards?

Answers

Answer:

2 yards is greater then 5 feet

Step-by-step explanation:

A yard is 3 feet, 3+3=6 I hope this helps!

Blake bought a new set of golf clubs. He found them at Golf Pro for $270. If the store is offering 20% off how much are the new clubs?

Answers

Answer:

216

Step-by-step explanation: 270-20%= 216

What is the domain of the function V(x)+1.

Answers

Answer:

3th one

Step-by-step explanation:

Answer:

i am not completely sure, im a bit rusty on this, but if im correct the answer is Option 1. I hope you get it right :)

Step-by-step explanation:

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