Mathematics Middle School

Let x be the number of hours that Chaya studies for a test and let y be the number of points she receives on the test. For one test, Chaya studied for 5 hours and received 14 points. Select all the equations that could describe Chaya’s grades and her study time.

Let X Be The Number Of Hours That Chaya Studies For A Test And Let Y Be The Number Of Points She Receives

Answers

Answer 1

Answer:

A and C I think

Step-by-step explanation:

2.8 x 5 = 14, and 5 + 9 = 14.

Answer 2

Answer:

the answer is y=2.8x and y=x+9

Step-by-step explanation:

hope this helped

Related Questions

help me out! Write an equation for line p :

Answers

Answer:

x = -4

Step-by-step explanation:

Since P is a straight vertical line, We know that the answer has to be about the x axis

Therefore, since the line is placed on -4 the equation will be

x = -4

Hope this helped :D

Help me answer this question!!!!!

Answers

Answer:

0

Step-by-step explanation:

The answer is 0 hope it helps

What is the area of a circle with a radius of 21 cm?
Group of answer choices
4348.08 cm2

1289.12 cm2

1384.74 cm2

Answers

Answer:

1384.74cm squared

Step-by-step explanation:

A= πr²

last one 1384.74 jajajajajajaja

create an equation for a third function that has a greater rate of change than one function but a smaller rate of change than the other function / please help!

Answers

Answer:

[tex]f(x)=x+5[/tex]

Step-by-step explanation:

The rate of change (slope) is 1 which is more than function 2 and less than function 1

Answer:

f(x) = x+5

Step-by-step explanation:

PLZZZZZZZZZ HELP MEE

Answers

Everytime your X goes up by 1, your Y goes up by 4

making the space between 6 and 14 = 10

the exponential factor equation would look something like this

g(x)=3^x

meaning every time x goes up by 1, your exponential factor gets multiplied by 3, making 14y have an exponential factor of 1.

what the dude above me said

Yall what is 10+9x please help thanks shawty

Answers

Answer:

19x I believe

Step-by-step explanation:

Added 10 and 9, left the x

Answer:

10+9x can't be combined to make a number

Step-by-step explanation:

This is because the 10 doesn't have the variable x so we can't combine them together

If the 10 had an x beside it, it would've become 19x, but it doesn't so it stays as is

Sorry if this is incorrect!!!!!

Bella was here :)

Help again lololololololol

Answers

Answer:

<B = 110°

Step-by-step explanation:

The interior angles formed by the sides of pentagon sum up to 540°.

So <A + <B + <C + <D + <E = 540°

130° + (x - 5)° + (x + 30)° + 75° + (x - 35)° = 540°

3x + 130 + 30 + 75 - 5 - 35 = 540

3x + 195 = 540

3x = 345

x = 115°

<A = 130°

<B = x - 5 = 115 - 5 = 110°

<C = x + 30 = 115 +30 = 145°

<D = 75°

<E = x - 35 = 115 - 35 = 80°

Hope it helps......

Yup there geometry is it

which of the following are zeros in the equation x (x - 3)(x + 6)(x - 7) = 0

Answers

Answer:

The given polynomial x(x -3)(x +6)(x -7)= 0 is of degree 4. Therefore, it has 4 zeros as follows. So, x = 3 is the second zero. So, x = -6 is the third zero.

Step-by-step explanation:

I think the answer is x^3+3x^2-18x

OMG PLLS HELP!!! EXRA POINTS AND BRAINLEIST!Also don't comment if you don't know or you claim you'll 'send me the link!!!

Answers

Answer:

80

Step-by-step explanation:

A bakery had 3 dozen eggs. The baker made 3 batches of cookies. Each batch required 3/4 dozen eggs. What fraction of a dozen eggs
remained?

Answers

Baker had 36 eggs
Baker made 3 batches of cookies
Each batch required 9 eggs
9 eggs x 3 batches =27
36-27=9
9eggs out of the dozen
=3/4 dozen eggs remaining
So one way you can do it is to multiply 12 by 3/4 which equals 9. Then you can multiply 9 by three since one dozen is 12. So once you multiply 9 by three you get your answer.

solve -8 = 1.3m - 2.1m

Answers

Answer:

sd sad a

Step-by-step explanation:

Answer: M=10.
-8=-0.8m
-8/0.8=m
10=m
m=10

Landon used a half circle and a square to form the figure shown. Which is the best estimate of the area of the figure in square meters?
A 138 m²
B 175 m²
C 125 m²
D 75 m²

Answers

138 is best estimate. The half circle is smaller than half a square so it cant be more than 150.
138 is the best possible answer

If you place a 34-foot ladder against the top of a building and the bottom of the ladder is 25 feet from the bottom of the building, how tall is the building? Round to the nearest tenth of a foot.

Answers

Answer:

23.0 ft to nearest 1./0.

Step-by-step explanation:

By Pythagoras:

34^2 = h^2 + 25^2      where h = the height of the building

h^2 = 34^2 - 25^2 = 531

h = 23.04 ft.

The answer is 23.0 ft

Hope this helped!

A cylinder has a height of 13 feet and a radius of 11 feet. What is its volume? Use a ~ 3.14
and round your answer to the nearest hundredth.

Answers

Answer:

4939.22 feet cubed.  

Step-by-step explanation:

The formula for the volume of a cylinder is V=3.14*r^2*h

First we square the raidus, which is 11 in this problem.  11 squared is 121.

Next we multiply everything together.

3.14*121 is 379.94.  Then, 379.94 * the height, which is 13, is 4939.22.

Since our answer is already rounded to the nearest hundredth, the answer to this problem is 4939.22

please help asapppp!!! i have a "f" in my math classssss!!!!!!!

Answers

Answer:

Let x = # of hours Sophia spends ironing shirts

Let y = # of hours London spends ironing shirts

Equations: x + y = 11 and 40x + 25y= 365

Step-by-step explanation:

If Sophia and London worked a combined 11 hours, then one of our equations is : x + y = 11

They also note that Sophia and London both ironed 365 shirts, and Sophia irons 40 shirts per hour while London can iron 25 shirts per hour. Our next equation is : 40x + 25y= 365

Save me from this nightmare of a content that I have to question

Answers

Answer:

It would be A

Step-by-step explanation:

2,320÷120

Hoped this helped! lmk!!

Answer:

C. 97

Step-by-step explanation:

What if did was:

2,320/120 = approx. 19

19 • 5

97

Hopefully this is correct! Good luck

I really need help! If the answer is correct, I'll give ya a brainliest ;)

Answers

Answer: What is the question-? :D

Step-by-step explanation:

whats the question?
step-by-step equation.

Please help me with this question

Answers

Answer:

56 and 7 its going by 5

Step-by-step explanation:

it is what it is yes ma’am

Find the measure of each angle.

10x - 20=
7x + 4

Answers

Answer:x=8 so 60 for both aswers

Step-by-step explanation:10x-7x = 4+20 -> 3x=24 -> x=8

Guy on the top is cap
First one -200
Second one 28

What is the surface area of the figure? Use 3.14 for π.

847.8 cm 2

2,402.1 cm 2

3,108.6 cm 2

12,717 cm 2

Answers

Answer:

Option 3

Step-by-step explanation:

We want to work out the surface-area

This is a cylinder and the formula for the surface area of a cylinder is :

2πrh+2πr^2

^ means to the power of

The radius is 15

The length is 18

2(3.14)(15)(18) + 2(3.14){15}^2

Part 1:

(6.28)(15)(18)

(6.28)(270)

1695.6

Part 2:

First, we do the exponents,

15^2 = 225

(6.28)(225)

1413

Part 3:

1695.6 + 1413 = 3108.6

Answer: 3108.6

Hope this helps :)

Answer 847.8cm2 because first you have to multiply 18 by 15 to get 270 then multiply 270 by 3.14 to get 847.8cm2

Please help with no links +100 POINTS.

Answers

The answer is 44. Yea it’s 44

Two angles are complementary. One angle is 52°.
How many degrees is the other angle?
Geometry

Answers

Answer:

you are correct :)

Step-by-step explanation:

complementary angels equal 90 degrees so you do 90-52

supplementary angels on the other hand, equal 180 degrees

It is 38° because complementary is 90° so 90° - 52° = 38°
Good Job!

7th grade math plsssssss help

Answers

Answer:

64

Step-by-step explanation:

length(l)=8cm

breadth(b)=2cm

height(h)=4cm

volume=l×b×h

=8cm×2cm×4cm

=64cm³

An algebraic expression that contains three terms is called?
Monomial
Binomial
Trinomial
None of these
























































































(Free po,,ints)

Answers

Trinomial

Step-by-step explanation:

T[tex]ri \: means \: three.[/tex]

Answer:

My father

Step-by-step explanation:

1. Say hi

2. Say hello

3. Be polite

4. Be humble

5. Now you got money from you father

The area of a circle is 111.6 square centimeters. What is a diameter? Use 4.1 for ℼ. PLEASEEEE HURRYYY

Answers

Answer:

Step-by-step explanation:

Area is + 111.6 square meters

Formula : A/ 3.14 / 2

111.6 / 3.14 = 35.54

35.54 is the radius so multiply by 2 to get diameter .

35.54 / 2 = 17.77

Hope that’s right:)

Please evaluate the expression below.

Select the answer with BOTH correct answers (the quotient in Scientific Notation and the quotient in standard form).

(3.5×10^9)÷(2.04×10^−2)

A) 1.71568627451×10^11;171,568,627,451

B) 1.7156863×10^7;17,156,863

C) 1.72×10^2;172

D) 1.72×10^−2;.0172

Answers

Answer:

scientific notation: 1.71568627×10^11

Step-by-step explanation:

look up math-way and click on the calculator if that is not what you are looking for :)

c 1.72×10^2;172 homie

Find the surface area of the prism.

Answers

Answer:

5×3 =15

15×4=60

3×3=9

9×2=18

60+18=78

Please solve; x³+y³+z³=k

Answers

Answer:

It's called a Diophantine Equation, and it's sometimes known as the “summing of three cubes”: Find x, y, and z such that x³+y³+z³=k, for each k from 1 to 100. One answer is x = 1, y = -1, and z = 2.

Step-by-step explanation:

PLEASE HELP ANSWER ASAP NO LINKS PLZ

Answers

Answer:

X = 14

Step-by-step explanation:

For me, I did was add 12 and 16 which equals 28 then I divide it by the 2 sides and that how I got my answer

Hope it helps

Mk, i don’t know if this is hundred percent correct. Alright so, first add 12 and 16. Those two numbers equal 28. Every triangle equals 180, so if you subtract 28 from 180 that equals 156. The missing X is 156! Sorry if the explanation is kinda bad. My english isn’t very good. Also, if you need your answer to be rounded to the nearest tenth, it will be 160. Hope this helps!

What is the value of x and the measure of ∠DBC, respectively?

A. x = 3; ∠DBC = 9
B. x = 36; ∠DBC = 108
C. x = 18; ∠DBC = 36
D. x = 18; ∠DBC = 54

Answers

Answer:

Hmm i don't know is A B C D

CBA should be hmm 90 degrees I think

Then you should be able to calculate

it's so easy

Step-by-step explanation:

Answer:

D. x = 18; ∠DBC = 54

Step-by-step explanation:

m∠ABD + m∠CBD = 90°

2x + 3x = 90°

5x = 90°

x = 18°

m∠DBC = 3x

m∠DBC = 3(18°)

m∠DMC = 54°

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