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frez [133]
3 years ago
14

Find the volume of a ball with a radius of 7cm.

Mathematics
1 answer:
vichka [17]3 years ago
6 0

Answer:

Use the formula V = 4/3pi r^3

Substitute r for 7 cm

Step-by-step explanation:

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2.
DanielleElmas [232]

Answer:

Add the area of the rectangle with the semicircle.

10x4 + 0.5(3.14)(25)

40+39.25

79.25

So the answer is C. 79.

Let me know if this helps!

4 0
3 years ago
Re-write the quadratic function below in Standard Form<br> y =4(x + 5)2 – 3
Alenkasestr [34]

Answer:

I love algebra anyways

The ans is in the picture with the  steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
christian has a diecast metal car that is a scale model of an actual car. If the actual length of the car is 10 feet and 6 inche
Brilliant_brown [7]
So.... You would get your problem out of the numbers 10,6,7 you would  multiply and get 10*6*7=420  so 420 would be the answer if that's what your looking for!!
                           Hope i helped if i did please make me Brainiest 
5 0
3 years ago
Vince has a rectangular rug in his room with an area of 10 ft the length of the rug is 18 inches longer than the width what coul
aev [14]

The length of the rug is 4 ft.

The width of the rug is 2.5 ft.

Explanation:

The area of the rug is 10 ft.

The length of the rug be l.

Let us convert the inches to feet.

Thus, 18 inches =  1.5 ft

Thus, the length of the rug is l=1.5+w

Let the width of the rug be w.

Substituting these values in the formula of area of the rectangle, we get,

A=length\times width

10=(1.5+w)(w)\\10=1.5w+w^2\\w^2+1.5w-10=0

Solving the expression using the quadratic formula,

$w=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

Substituting the values, we have,

$w=\frac{-15 \pm \sqrt{15^{2}-4 \cdot 10(-100)}}{2 \cdot 10}\\

$w=\frac{-15 \pm \sqrt{4225}}{20}$

$w=\frac{-15 \pm 65}{2 0}$

Thus,

w=\frac{-15 + 65}{2 0}\\w=\frac{50}{20} \\w=2.5  and   w=\frac{-15 - 65}{2 0}\\w=\frac{-80}{20} \\w=-4

Since, the value of w cannot be negative, the value of w is 2.5ft

Thus, the width of the rug is 2.5ft

Substituting w=2.5 in l=1.5+w, we get,

l=1.5+2.5\\l=4

Thus, the length of the rug is 4 ft.

4 0
3 years ago
Latasha bought a concert ticket. She does not remember the price of the ticket, but she remembers that she had to pay $1 in tax.
docker41 [41]

Answer:

Original price of ticket = $12.5

Step-by-step explanation:

Given:

8% amount = $1

Find:

Original price of ticket

Computation:

Original price of ticket = 1(100/8)

Original price of ticket = $12.5

7 0
3 years ago
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