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polet [3.4K]
3 years ago
8

Can someone help me with this plsssss

Mathematics
1 answer:
cupoosta [38]3 years ago
4 0

Answer:

15 cm

Step-by-step explanation:

Given:

The two cylinders shown in the figure are similar to each other.

Therefore, when two figures are similar their measures are in proportion.

So, radius and height of both the cylinders are in proportion.

Radius of both the cylinders are 2 cm and 5 cm respectively. Height of the smaller cylinder is 5 cm. Now,

\frac{2}{6}=\frac{5}{x}

Doing cross multiply, we get:

2x=6\times 5\\2x=30

Dividing both sides by 2, we get:

\frac{2x}{2}=\frac{30}{2}\\x=15\ cm

Therefore, the height of the larger cylinder must be 15 cm in order to make both the cylinders similar to each other.

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6w = 77 - 5w<br> What does w equal
Digiron [165]

Answer:

w=7

Step-by-step explanation:

6w=77-5w

Add 5w to both sides

11w=77

Divide both sides by 11

w=7

5 0
2 years ago
A stack of 9 different cards are shuffled and spread out face down. If 4 cards are tired face up, how many different 4-card comb
Juliette [100K]

Answer:

126.

Step-by-step explanation:

This is the number of combinations of 4 cards  from 9 cards:

= 9C4

= 9! / 4! 5!.

A quick way of calculating this is  

9*8*7*6

----------- =   9*2*7   =    126 combinations.

4*3*2*1

7 0
3 years ago
Ok so the equation is 45+x=2x+15
sleet_krkn [62]

Answer:

y=45+x

y=2x+15

x=30

Step-by-step explanation:

3 0
3 years ago
Which quadratic function is represented by the table ???
Ulleksa [173]

Answer:

B) f(x) = 3x² - 2x + 5

Step-by-step explanation:

To find the correct quadratic function that represents the table, you must substitute [x] into the quadratic function.

A) f(x) = 3x² + 2x - 5

B) f(x) = 3x² - 2x + 5

C) f(x) = 2x² + 3x - 5

D) f(x) = 2x² - 2x + 5

A.   3(-2)² + 2(-2) - 5 =

3(4) - 4 - 5

12 -  4 - 5

12 - 9

= 3

B.   3(-2)² - 2(-2) + 5 =

3(4) + 4 + 5

12 + 9

= 21

C.   2(-2)² + 3(-2) -5 =

2(4) - 6 - 5

8 - 11

= - 3

D.   2(-2)² + 2(-2) + 5 =

2(4) - 4 + 5

8 - 4 + 5

8 + 1

= 9

Your correct answer is: B

8 0
3 years ago
140÷(x+9)+(x+4)² when x =1 show work​
Dmitrij [34]

Answer:

39

Step-by-step explanation:

If x=1, then it's equal to 140/(1+9, or 10)+(1+4, or 5)^2, and that is equal to 140/10+5^2, or 140/10+25, and 140/10=14, and 14+25=39

brainliest pls

4 0
2 years ago
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