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2 years ago

5

A locker combination has three nonzero digits, with no repeated digits. If the first digit is a 2, what is the probability the s

econd digit is also even?
A. 1/2
B. 1/3
C. 3/7
D. 3/8

1 answer:

Nezavi [6.7K]2 years ago

5 0

I think it would be 3/8 :))

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Fittoniya [83]

A cord is a rectangular prism. The volume formula for a rectangular prism is A = l*w*h. So, in this case, A = 4*4*8 = 128 ft^3. So your answer is D.

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2 years ago

What does -5.4+9.7 equal?

tatiyna

Oh gurly!!!! Just use a calculator but I’ll answer this one for you okay? Now how I’d do it without a calculator is subtract. Subtract if it asks you to add and add if it asks for subtraction.. it may be confusing but I’ll explain. 9.7-5.4=4.3

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2 years ago

A car travels 55.9 in an hour. If the car continues at the same speed, for 12 hours how many will it travel?

kirill [66]

Answer:

670.8

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3 years ago

5. Estimate the following by rounding off to nearest hundreds.<br> a) 456 × 615<br> b) 1245 ÷ 145

bezimeni [28]

Answer:

a) 3000

b) 12

Step-by-step explanation:

I will round to the nearest hundred and multiply. Note that these are estimates, as the questions stated.

a) 456 x 615 ≈ 500 x 600 = 3000

b) 1245/145 ≈ 1200/100 = 12

I hope this helps! :)

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2 years ago

Raylin went to the park with her friends and found a soccer ball. She picked up the soccer ball and kicked it as high as she cou

Tems11 [23]

Answer:

The maximum height is: $h(t_{max})=14.39 \: u$

The ball reaches the ground in 1.79 s.

Step-by-step explanation:

We need to take the derivative and equal to zero to find the time at the maximum height.

$h(t)=-16t^{2} +27t+3$ (1)

$\frac{dh(t)}{dt}=-32t +27=0$

$t_{max} =\frac{27}{32}$

$t_{max} =0.84\: u$

Now, we just need to put t(max) into equation (1) to find h(max)

$h(t_{max})=-16(0.84)^{2} +27(0.84)+3$

$h(t_{max})=-16(0.84)^{2} +27(0.84)+3$

$h(t_{max})=14.39 \u$

If we want to get the time when the ball reaches the ground we just need to equal h(t) to zero.

$0=-16t^{2} +27t+3$

Let's solve this quadratic equation.

We will get two solutions and we must choose the positive value.

t1 = 1.79 u

t2 = -0.10 u

Therefore, the ball reaches the ground in 1.79 u.

I hope it helps you!

7 0

3 years ago