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padilas [110]
3 years ago
13

Can someone help I don’t know

Mathematics
2 answers:
Rasek [7]3 years ago
8 0

Answer:

yes i will help you

Step-by-step explanation:what are you struggling with

mihalych1998 [28]3 years ago
3 0

Answer:

A

Step-by-step explanation:

Given similar figures with ratio of sides = a : b , then

ratio of areas = a² : b²

ratio of sides = 15 ; 18 = 5 ; 6

The ratio of perimeters is equal to the ratio of sides, so

ratio of perimeters = 5 : 6

ratio of areas = 5² : 6² = 25 : 36

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Solve the system of equations.
Orlov [11]

Answer:

x=-1, y = 2, z = 1

Step-by-step explanation:

We are given with three equations and we are asked to find the solution to them.

2x + 2y + 3z = 5  ------------- (A)

6x + 3y + 6z = 6  --------------(B)

3x + 4y + 4z = 9 ---------------(C)

Step 1 .

multiplying equation (A) by 3 and subtracting B from the result

6x + 6y + 9z = 15

6x + 3y + 6z = 6

-     -       -       = -

_______________

3y+3z=9

y+z=3

y=3-z  ----------------- (C)

Step 2.

Substituting this value of y in equation B and C

6x + 3(3-z) + 6z = 6  

6x+9-3z+6z=6

6x+3z=-3

2x+z=-1 ----------------(D)

3x + 4(3-z) + 4z = 9

3x+12-4z+4z=9

3x=-3  

x=-1 ------------ (E)

Putting this value f x in (D)

2(-1)+z=-1

-2+z=-1

z=1

Now we put this value of z in equation (C)

y=3-z

y=3-1

y=2

Hence we have

x=-1, y=2 and z=1

6 0
3 years ago
If y varies inversely as x, and y=16 when x=4, find y when x=10
scoray [572]

Answer:

40

Step-by-step explanation:

you have to multiply x by 4 to get y when x=4 and y=16. so if x=10, then you have to multiply what x is (10) by 4 because there is a common ratio.

hope this helps!! please give brainliest!!!!!!

5 0
2 years ago
Given a cylinder with a volume of 350 cubic inches and height of 7 inches. Find B, the area of the base. Use 3.14 for pie
rusak2 [61]

UzusuxhzjaisuzAnswer:

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Melanie is going to invest in an account paying an interest rate of 3.1% compounded
Kazeer [188]

Answer:

Step-by-step explanation:

$40

6 0
3 years ago
The answers
bazaltina [42]

Answer:

C

Step-by-step explanation:

First cuz the y-intercept is 3 so not B or D

And the slope is -2/3

so the answer is C.

i'm not really sure about the slope part.

3 0
3 years ago
Read 2 more answers
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