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3 years ago

Can someone help me with these math quetions please

Mathematics

1 answer:

andriy [413]3 years ago

6 0

Answer:

x is-4,and ans for y is 1

Step-by-step explanation:

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A middle-school art teacher, Ms. Velez, and her students are turning the school’s gymnasium into a student art museum for the da

boyakko [2]

Answer:19 to the 5th power

Step-by-step explanation:

U got to count all the zeros and that will be the number u put on top plus 19

3 0

3 years ago

Compare the surface area-to-volume ratios of the moon and mars. express your answer using two significant figures.

antoniya [11.8K]

we know that

For a spherical planet of radius r, the volume V and the surface area SA is equal to

$V=\frac{4}{3} *\pi *r^{3} \\ \\ SA=4*\pi *r^{2}$

The
ratio of these two quantities may be written as

$SAV =\frac{(4*\pi*r^{2})}{(\frac{4}{3}*\pi*r^{3})} \\ \\ SAV =\frac{3}{r}$

we know

$rMoon=1,738Km\\ rMars=3,397 Km$

$\frac{SAV Moon}{SAV Mars} =\frac{3}{rMoon} *\frac{rMars}{3} \\ \\ \frac{SAV Moon}{SAV Mars} =\frac{rMars}{rMoon} \\ \\ \frac{SAV Moon}{SAV Mars} =\frac{3,397}{1,738} \\ \\ \frac{SAV Moon}{SAV Mars} =1.9545$

therefore

the answer is

$1.9$

5 0

3 years ago

Read 2 more answers

1. PART A: Determine the missing lengths:

Otrada [13]

Divide into two rectangles

$\\ \tt\hookrightarrow "1"=14-12=2$

$\\ \tt\hookrightarrow "2"=3+1=4$

$\\ \tt\hookrightarrow P=14+1+12+3+2+4=36$

$\\ \tt\hookrightarrow A=14(1)+3(2)=14+6=20units^2$

3 0

2 years ago

Read 2 more answers

When Carter runs the 400 meter dash, his

Artemon [7]

300800009777004577/$&84/:6753499$!;:68

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3 years ago

On a given planet, the weight of an object varies directly with the mass of the object. Suppose that an object whose mass is 7 k

Airida [17]

Answer:

21 N

Step-by-step explanation:

let mass be m and weight be w

Given w varies directly with m then the equation relating them is

w = km ← k is the constant of variation

To find k use the condition m = 7 , w = 49 , then

49 = 7k ( divide both sides by 7 )

7 = k

w = 7m ← equation of variation

When m = 3 , then

w = 7 × 3 = 21 N

3 0

3 years ago