2 years ago

ANSWER CORRECT FOR BRAINLIEST - 10 POINTS

Mathematics

2 answers:

aliina [53]2 years ago

5 0

I could be wrong but I’m pretty sure the analysis stage

finlep [7]2 years ago

4 0

Analysis im pretty sure

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A certain positive number is multiplied by 4, and then the result is subtracted from the original number. The result is 21 less

stira [4]

Answer:

The number is 7

Step-by-step explanation:

certain positive number: x

x is multipled by 4:

result of this is subtracted from the original number:

so original number minus 4x,

x - 4x

the result is 21 less than 0, this means negative 21

x - 4x = 0 - 21 = -21

do algebra:

-3x = -21

multiply both sides by -1

3x = 21

divide both sides by 3

x=7

(certain positive number: x) is equal to 7

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2 years ago

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Marti is filling a 10– inch diameter ball with sand to make a medicine ball that can be used for exercising. To determine if the

Mice21 [21]

Answer:

Option A. $30\ pounds$

Step-by-step explanation:

step 1

Find the volume of the sphere ( medicine ball)

The volume is equal to

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

we have

$r=10/2=5\ in$ ----> the radius is half the diameter

Convert inches to feet

Remember that

1 ft=12 in

$r=5\ in=5/12\ ft$

assume

$\pi=3.14$

substitute

$V=\frac{4}{3}(3.14)(5/12)^{3}$

$V=0.3029\ ft^{3}$

step 2

Find the weight of the ball

Multiply the volume in cubic foot by 100

$0.3029*100=30.29\ pounds$

Round to the nearest pound

$30.29=30\ pounds$

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3 years ago

I rectangular prism is completely packed with 90 cubes of edge length 1/2 inch without any gap or out or overlap which of the fo

Katarina [22]

45 multiply 1/2 and 90 put it in the calculator 90 times 0.5

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3 years ago

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Strike441 [17]

Solve it yourself

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2 years ago

Solve the following equation for y: 4x - 2y = 10

katrin [286]

Answer:

Step-by-step explanation:

2×5=10 very simple becausevthe equation is e Wii als 0

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3 years ago