Mathematics College

use the expression (8x + 2) + (-9x + 7)
a. find the sum
b. explain how you know when to combine terms with variables

Answers

Answer 1
combine like terms, you would get -1+9 which your answer would be 8

Related Questions

Can someone help me with this?

Answers

Answer:

Kite x=1, y=7

Step-by-step explanation:

It is a kite.

The two lines on the bottom corners of the kite mean they have the same value.

X=1 so 3x+4

3 *1 +4=7

And: x+6

1+6=7.

X+4=1+4=5.

Y=7 so y-2

7-2=5.

Hope it helped you

solve for x: 5/2x = 15/2 x=3

Answers

Answer:

3

Step-by-step explanation:

5/2⋅=15/2⋅=3



Help plssss hhbbbbbbbbbhnjjjjjjjjjbhddccgbbbhh

Answers

Answer:

It's a, 2^x + 3

Step-by-step explanation:

If you look at the y-intercept, you can see that there was a vertical shift upwards by 3 (y intercept moved from y = 1 to y = 4).

If you're studying for the SAT, it'll be good to study the transformation rules, including horizontal stretches/shifts. They always seem to throw one or two questions about those on there.

Mean of eight observations is 25. If one observation 11 is excluded , find the mean of the remaining.​

Answers

Answer:

Mean = 27

Step-by-step explanation:

Given mean = 25

No of observations (N) = 8

We know,

Mean = Sum / N

25 = Sum / 8

Sum = 25 x 8

Sum = 200

Since an observation 11 is removed,

New sum = 200 - 11 = 189

New no. of observation (N) = 8 - 1 = 7

Now,

Mean of remaining observations = New Sum / New N

= 189/7

= 27

Answer:

mean=25

n=8

sum of observation=?

we have

mean=sum/n

sum=25×8=200

if one observation is excluded

sum will be =200-11=189

[n]no of observation = 8-1=7

new mean =new sum/new n=189/7=27

the mean of the remaining is 27

Can someone please give me the answer I will mark u brilliant

Answers

The first question is B and the second one is C

Answer:

p = 16.8

[tex] r \geqslant 5.5[/tex]

Step-by-step explanation:

12)

p + 2.1 = 18.9

p = 18.9 - 2.1

p = 16.8

13)

[tex]r \geqslant 5.5[/tex]

what is x

I'm confused​

Answers

Answer:

x = 3

Step-by-step explanation:

the diagonals bisect each other so:

6x + 2 = 20

subtract 2 from both sides of the equation:

6x = 18

x = 18/6

x = 3

A combination lock has 3 digits, each of which can be any number between 0 and 9. How many possible lock combinations are there?​

Answers

Answer:

1000

10x10x10= 1000

........

Answer:

1000

Step-by-step explanation:

10 x 10 x 10 = 1000  (each number can be repeated on every digit)

choose the correct equation please

Answers

Answer:

y=3×+6

Step-by-step explanation:

bla bla bla bla bla bla bla hhhhhhhhhhhh

Please fill in the answers by 4:00 !! (I'll give brainliest if u help me)

Answers

here you go! hopefully this helps :))

Identify 2 objects you could find in a grocery store that holds more than 100 milliliters

Answers

Milk carton
Perfume bottle

Math Which expressions represent 9 divided by the sum of 1 and 2? Check all that are true. 09/(1+2) 9+1+2 I (9 - 1) + 2 (1 + 2) = 9 09+ (1 + 2)​

Answers

Answer: 9/(1+2)

Hope it helps :)

Two lines are represented by equations: 10x – 15y = 21 and y = kx + 5.What value of will make lines perpendicular? ​

Answers

Answer:

is this what u wanted? if no can u write on paper what u wanted and send me

-b+10a-5 in standard form

Answers

Answer:

10a-b-5

Step-by-step explanation:

-b+10a-5 in standard form

is

10a-b-5

hoped this helped :)

if I wakes for 1/2 an hour, walks for 1/3 of an hour, and jogs for 1/4 of
an hour. Calculate how many minutes i exercises.

please someone help me this is for a test ​

Answers

Answer:

65 minutes

Step-by-step explanation:

Find the missing angle.
120°
30°
N
Z=
Enter the number that belongs in the green box,
[?]
please help this is urgent

Answers

Answer:

missing angle = 30 degrees

Step-by-step explanation:

all triangles have an interior angle or 180 degrees.

to find the missing angle, just take the know angles and add them together:

120 + 30 = 150

then take the sum and subtract it from 180:

180 - 150 = 30

Answer:

120° +30° +z=180°150° +z =180°z= 180°-150°z=30°

the measures of the angles of a triangle are shown in the figure below. solve for x ​

Answers

Answer:

the the figure shown x=7

Answer:

7°

Step-by-step explanation:

7x + 5 °+ 36° + 90 °= 180° ( being sum of angles of triangle )

7x + 131° = 180°

7x = 180 °- 131 °

7x = 49°

x = 49° / 7

x = 7°

Please Help, I will give a brainleist to the right answer.

Answers

the perimeter is 28 feet long. you would add 7 four times because all sides on the square are equal

The perimeter is 28 feet long but all the sides are the same

The measures of the angles of a triangle are shown in the figure below. Solve for x

Answers

Answer:

x=17

Step-by-step explanation:

4x+8+44+60=180

4x+112=180

4x=180-112

4x=68

x=68/4

x=17

Find the measure of 61.
{
839
41
{ K
41 = [?]
Enter

Answers

Answer:

m<1 = 97°

Step-by-step explanation:

<1 and 83° are same-side interior angles. Same-side interior angles are supplementary. This implies that:

m<1 + 83° = 180°

Therefore:

m<1 + 83° - 83° = 180° - 83° (subtraction property of equality)

m<1 = 97°

Answer:

<1=97°

steps:

<1+83=180 co interior angle

<1=180-83=97°

45633 seconds en heures minutes et seconds

Answers

Yes. I totally agree with that statement. 10/10

A rectangular prism has a length of 3ft, a height of 6ft, and a width of 20ft. What is its
volume, in cubic ft?

Answers

Answer:

360

Step-by-step explanation:

To solve to volume you need to times the width, length, height. so 3 times 6 is 18 and 18 times 20 is 360.

100
400 people were surveyed
about their eye color. 8% of
the people surveyed have
green eyes. How many
people had green eyes?

Answers

Answer:

32 people

Step-by-step explanation:     If there are 400 people and there is 8% of that, then first convert 8% to a decimal so its easier to work with. The multiply with 400:

0.08 * 400 = 32

Answer: 32 people have green eyes

32 people have green eyes

3 |a| +5 |b| if a = −2; b = −1
WILL AWARD BRAINLIEST

Answers

Answer:

-11

Step-by-step explanation:

[tex]3( - 2) + 5( - 1)[/tex]

[tex] - 6 + ( - 5)[/tex]

[tex] - 11[/tex]

Find the measure of t given that p

Answers

Answer:

m∠t = 143°

m∠x = m∠t

i'm just ordinary human, CMIIW

(WORTH 25 POINTS and il give brainliest to the first person to answer) Miguel is building a doghouse he cuts one sheet of wood to make the front wall he also cuts out a door that is 2 ft by 2 ft the dimensions in feet are shown in the diagram. miguel needs to paint the wood. what is the area he needs to paint? 1. what is the area of the rectangular price of wood before the square is cut out? include units with your answer. ​

Answers

Answer:

umm 4 ft

Step-by-step explanation:

Answer:

12 ft sq.

Step-by-step explanation:

Two box plots compare the number of interceptions that were thrown by NFL quarterbacks in the years 1998 and 2008. Which choice is NOT true?

Answers

Answer:

bottom left on ttm/imagine math

GOT IT RIGHT IT IS NOT THAT HARD IF YOU KNOW BOX PLOTS WELL.

Step-by-step explanation:

The Cobb-Douglas production model is a function that relates production outputs with a combination of different inputs. Agricultural data from 44 countries around the world, concerning agricultural production Q, labor L, capital K, fertilizer F, and hectares of arable land H, can be used to create an agricultural production model for countries using a Cobb-Douglas function given by

Q= 3.41 L^0.266 .K^2.06 F^0.299.H^1.41

The exponents in the Cobb-Douglas model are called elasticities. Find the percentage increment in production if a country has a 1% increase in Labor.

Answers

Answer:

0.266 percent

Step-by-step explanation:

With labor increasing by 1 percent, we are to find how much level of production would also increase given the coubglas function in the question.

Level of production = ∆Q/Q

We differentiate the function Q with respect to Labour, L.

∆Q/∆L = 0.266Q/L

∆Q/Q = 0.266∆L/L

∆L/L = 1

∆Q/Q x 100 = 1 *0.266

= 0.266%

Please refer to the attachment

Determine the number of zeros of the polynomial function
F(x) = x^4 - x^7

Answers

Answer:

7

Step-by-step explanation:

Using fundamental theorem of algebra, there should be 7 roots, if you count multiplicity.

If you're only counting distinct roots, then there should be 4 roots.

Identify the constant of proportionality from the graph.


A. 3

B. 9

C. 1/3

D. 6​

Answers

I think it would A hope this helped
A.3

The constant of proportionality is the slope (or rate of change) of the graph.
To find the equation of the graph;
Take points (1,3) and (3,9)
The slope (m) = change in y ÷ change in x
m =
Taking another point (x,y) on the graph

what is this figure ?

Answers

that figure is B. a parallelogram
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