Which of these systems of equations would be best solved using the subtraction​ method?
I. 2x−7y+3y = 4
−6x−4y = −52
II. 2y = −5x+6x−5
y = 2x−6
III. −7x+3x+2y = 4
4x−6y = −52

Answer:

7

Step-by-step explanation:

Answer

61/4 or 6.25

Step-by-step explanation:

I belivie this is correct

Radius = 5 cm

Height = 8 cm

Volume = πr²h

Volume = π(5 cm)² × 8 cm

Volume = π × 25 cm² × 8 cm

Volume = 200π cm³

Answer: C

Step-by-step explanation:

Answer:

0.78 - (1 - 0.34)

Step-by-step explanation:

i think this is correct, im so sorry if it isnt

Answer: 0.78-(1-0.34)

Step-by-step explanation:

0.78 must be on the outside of the parenthesis'

We need to find out the length of Sergei's rod, so we need to subtract it by one

1-0.34=0.66

Now do 0.78-0.66

0.12

That is how you know you are finding out the difference in length.

Answer:

colder then warmer

Step-by-step explanation:

Answer:

10? I cant see it

Step-by-step explanation:

Answer:

Volume equals 1632

Step-by-step explanation:

V=Bh

B=base area, to get B use the equation πr².

H= height  

Side A= 12

Side B= 10

Side C= 10

For the height we will use 34, or the height of the prism.

48*34 equals 1632, And your volume is 1632.

Answer:

y=4

Step-by-step explanation:

Let's solve your equation step-by-step.

5y−14=2y−2

Step 1: Subtract 2y from both sides.

5y−14−2y=2y−2−2y

3y−14=−2

Step 2: Add 14 to both sides.

3y−14+14=−2+14

3y=12

Step 3: Divide both sides by 3.

3y/3=12/3

y=4

Answer:

5y + -14 = 2y + -2

-14 + 5y = 2y + -2

-14 + 5y = -2 + 2y

-14 + 5y = -2 + 2y

-14 + 5y + -2y = -2 + 2y + -2y

5y + -2y = 3y

-14 + 3y = -2 + 2y + -2y

2y + -2y = 0

-14 + 3y = -2 + 0

-14 + 3y = -2

-14 + 14 + 3y = -2 + 14

 -14 + 14 = 0

0 + 3y = -2 + 14

3y = -2 + 14

-2 + 14 = 12

3y = 12

y = 4

Answer:

37.79924

Step-by-step explanation:

Answer:

-5f    +6

Step-by-step explanation:

-4f - 9 - f + 15

Combine like terms

-4f -f    -9 +15

-5f    +6

Answer:

-5f+6

Step-by-step explanation:

as we add like terms -4f+(-f)=-5f

-9+15=6

Answer:

you have it done? what do you need

Step-by-step explanation:

Answer:

The answer is- 40

Step-by-step explanation:

( :

The area of the pentagon represented here is 40 units².

Area of a two dimensional shape is the total region which is bounded by the object's shape.

Given that the coordinates of the vertices of the pentagon given are A(0, 0), B(3, 5), C(3, 8), D(8, 5), and E(8, 0).

We have to find the area.

This pentagon can be divided in to triangle CBD and trapezium ABDE.

Find the area of each to find the total area of the pentagon.

Area of ΔCBD = [tex]\frac{1}{2}[/tex] × BD × CB

Using the distance formula,

BD = [tex]\sqrt{(8-3)^2+(5-5)^2}[/tex] = 5

CB = [tex]\sqrt{(3-3)^2+(5-8)^2}[/tex] = 3

Area of ΔCBD = [tex]\frac{1}{2}[/tex] × 5 × 3 = 7.5

Area of trapezium ABDE = [tex]\frac{1}{2}[/tex] × (AE + BD) × DE

Using the distance formula,

AE = 8, BD = 5 and DE = 5

Area of trapezium ABDE = [tex]\frac{1}{2}[/tex] × (8 + 5)5 = 32.5

Total area of the pentagon = 7.5 + 32.5 = 40 units²

Hence the total area is 40 units².

Learn more about Area here :

https://brainly.com/question/22590672

#SPJ3

Answer:

I think its C

Step-by-step explanation:

Answer:

The answer is c

Step-by-step explanation:

Answer: E. Subtract 2x

Step-by-step explanation:

Subtracting 2x would remove a bit from both equations, giving us 5x - 9 = 12. This would make it easier now that we only have one number on a side.

Hope this helps!

Answer:

15 miles per gallon

Step-by-step explanation:

If a car travels 45 miles and uses 3 gallons of gas than to find how many miles can be traveled using 1 gallon, you do 45/3, miles/gallons to get 15 miles/1 gallon.

Hope this helps,

-Shaylee

Answer:

B 2.28

Step-by-step explanation:

please mark brainliest answer so i can rank up

I got 11,304. I don't know if that's right or if it's wrong. Let me check again

Answer:

665 ft^3

Step-by-step explanation:

The formula to find the volume of pyramids is 1/3 x length x width x height. One way to solve this is by multiplying the length, width and height, and then dividing it by 3.

14 x 9.5 x 15 = 1995

1995 / 3 = 665

So the volume is 665 cubic feet

I hope this helps :)

Answer:

no because 3/20 is eguivilent to 0.15 whitch is half of 0.3

Answer:

No; he will need to sell and additional .15 of his collection

Step-by-step explanation:

15 is half of .3 so it can't be enough of his collection

sorry if not correct answer

Answer:

Scale factor is used to find the coordinates depending upon whether the scale factor value is less than one or more than one.

Step-by-step explanation:

A scale factor is a number which scales, or increases, some amount. In the condition y = Cx, C is the scale factor for x. C is likewise the coefficient of x, and might be known as the steady of proportionality of y to x.

An object is augmented if the scale factor is more noteworthy than 1. An article is decreased if the scale factor is a division, under 1. To discover the expanded picture, we initially should know the directions of our unique picture. At that point we basically increase the arrange by the scale factor to discover the widened picture.

Answer:

1) B, 28

2) A

3) B, 11

Step-by-step explanation:

PEMDAS, and simple math.

What is the name of your profile pic character?

Answer:

1. 28

2. One half of the quotient of 12 3, then add 8

3. 8

Answer: The 3 answer

Step-by-step explanation:

Its just a feeling

Answer:

Step-by-step explanation:

x = number of pushups he did

Answer:

the number of pushups done by Noah

Step-by-step explanation:

if Noah did x amount of pushups then Diego did twice as many, which is 2x therefore in this equation x represents the number of pushups done by Noah

Answer:$5.60

Step-by-step explanation: $4*0.4= 1.6

1.6+4=5.60

Multiply $4 by 40% or 0.4 then add it to the $4

Answer: it’s 116

Step-by-step explanation:

Answer:

80

Step-by-step explanation:

Volume= Length x Width x Height

8x2x5= 80

If you want to break it up into smaller pieces ....

5x2=10 or 5+5=10    

10x8= 80 or 10+10+10+10+10+10+10+10

hope this helps! :)

Answer:

Unit rate is regularly a helpful method for contrasting proportions and their related rates when estimated in various units. The unit rate permits us to look at different sizes of amounts by inspecting the quantity of units of one amount for each one unit of the subsequent amount.

Step-by-step explanation: