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3 years ago

Help please I’m stuck

Mathematics

1 answer:

Liono4ka [1.6K]3 years ago

3 0

Answer:

10.5

Step-by-step explanation:

ΔXYZ is similar to ΔABC. So the corresponding sides are proportional:

XY / AB = XZ / AC = YZ / BC

We want to find length AB, so we can either use the first proportion:

7 / k = 3 / 4.5

Or we can use the second proportion:

7 / k = 6 / 9

Either way, we'll get the same answer. I'll use the second proportion. Cross multiplying:

6k = 63

Dividing:

k = 10.5

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Can people help me please to find the volume about question number 10 please and tell me the answer step by step please I need h

Alecsey [184]

#10
Volume of a cylinder: $\pi$ r²h

Plug the numbers in.

$\pi$ 3²15 = 424

The volume of the pipe is 424 cm³.

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4 years ago

Help pllzzzzzzzzz

Serggg [28]

9514 1404 393

Answer:

(b) y/6 = 7/5.25

Step-by-step explanation:

Clockwise from the obtuse angle, the side ratios are ...

Fig I : Fig II

4.2 : 3.15

y : 6

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6 : x

4 : 3

A true proportion will have corresponding parts of these ratios in corresponding places. The only true proportion listed is ...

$\dfrac{y}{6}=\dfrac{7}{5.25}$

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3 years ago

During the month of February, Hal’s weekly grocery bills were $109.60, $114.56, $85.90, and $122.14. Find his average weekly gro

Softa [21]

In what i got the answer has to be $108

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3 years ago

Help? I don’t understand this math

Wittaler [7]

Answer:

<h2>Option J:</h2>

${x}^{3} {y}^{3}$

Step-by-step explanation:

Given,

Width of the rectangular prism

= x

Length of the rectangular prism

$= {x}^{2} y$

Height of the rectangular prism

$= {y}^{2}$

Therefore, 

Volume of the rectangular prism

= Width × Length × Height 

$= x \times {x}^{2} y \times {y}^{2}$

$= {x}^{3} {y}^{3}$

Hence, 

The required volume of the rectangular prism is 

Option J:

${x}^{3} {y}^{3}$

4 0

3 years ago

Read 2 more answers

which of the following numbers which of the following numbers when added to it perfect squares is 240

Katena32 [7]

Answer:

first of all square mean two number or double so if we multiple 15×15=225 and if we multiply 16×16=256 mean the number 240 lies between them what about number 15.5 lets try now 15.5×15.5=240.25 if you want to make sure so just take a square root of this number

$\sqrt{240.25} = 15.5$

so 240 is product of (15.5)² note number after point is negligible

4 0

3 years ago

Read 2 more answers