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3 years ago

I need help with this asap! i will give brainliest :) (image included)

Mathematics

2 answers:

trasher [3.6K]3 years ago

5 0

7 x 3 = 21 so it is 21 ft cm your welcome

BabaBlast [244]3 years ago

5 0

Answer:

The answer is C = 63π

Step-by-step explanation:

V = πr2 h

V = π (3)2 x 7

V = π (9) (7)

V = 63 π

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HELP please and thanks.. :)

fomenos

Answer:

false: the event will never occur; the event will definitely occur; the event is likely to occur

true: there is a small chance that the event will occur

Step-by-step explanation:

7 0

3 years ago

A 2-yard piece of string costs $5.04. What is the price per foot?

Nikitich [7]

The price per foot would be .84 cents, 1 yard equals 3 feet so 2 yards is 6 feet. if you take $5.04 and divide it by 6 then you get 0.84

4 0

3 years ago

Read 2 more answers

What is y + 20 < 180? please help me

taurus [48]

Answer:

y < 160

Step-by-step explanation:

y + 20 < 180

-20 < -20

y < 160

y is less than 160

5 0

3 years ago

Read 2 more answers

Martin throws a ball straight up in the air. the equation h(t) = -16t^2 + 40t + 5 gives the height of the ball, in feet, t secon

Lisa [10]

Answer:

2.62 seconds

Step-by-step explanation:

Let

t ----> the time in seconds

h(t) ----> he height of the ball, in feet

we have

$h(t)=-16t^2+40t+5$

we know that

When the ball hits the ground, the height is equal to zero

$-16t^2+40t+5=0$

The formula to solve a quadratic equation of the form

$at^{2} +bt+c=0$

is equal to

$t=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16t^2+40t+5=0$

$a=-16\\b=40\\c=5$

substitute in the formula

$t=\frac{-40\pm\sqrt{40^{2}-4(-16)(5)}} {2(-16)}$

$t=\frac{-40\pm\sqrt{1,920}} {-32}$

$t=\frac{-40+\sqrt{1,920}} {-32}=-0.12\ sec$

$t=\frac{-40-\sqrt{1,920}} {-32}=2.62\ sec$

therefore

The solution is t=2.62 seconds

4 0

3 years ago

The solution of 2x2 + x = 3 is shown below.

Yanka [14]

Answer:

b. {(-1.5, 9.5), (1,7)}

Step-by-step explanation:

brainliest please? :)

9 0

3 years ago