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3 years ago

Number 16 plz and don't answer if you don't know I'll report you

Mathematics

1 answer:

melomori [17]3 years ago

5 0

Answer:

a = 5 seconds and b = 50 inches c = No, because it starts at 50 inches and only goes down after that. This means it will never be at 120 inches.

Step-by-step explanation:

A. Solve it as a quadratic equation where h = 0 (because it will be 0 inches above the water).

0 = - 16t^2 + 70t + 50

0= -2(8t^2 - 35t -25)

0= -2(t - 5)(8t + 5)

Since the amount of time has to be positive, t - 5 = 0, so t = 5 seconds

B. Substitute t = 0 into the equation.

h = -16(0)^2 + 70(0) + 50

h = 0 + 0 + 50

h = 50 inches

C. It's diving, so it's only going down and won't reach 10 feet.

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grigory [225]

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3 years ago

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Darya [45]

Answer:

10.7

Step-by-step explanation:

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3 years ago

Round ALL NOT ONE to the nearest tenth <br><br> 1) 29.516<br> 2)84.78<br> 3)1017.36

kogti [31]

Let's get started!! hahah
The tenths place is the place right after the decimal
When rounding,
This number either stays the same (if the number after it is lower than 5)
or increases by 1 (if the number after it is 5 or greater)

1) 29.516. 5 is in the tenths place look at the number after this.. 1: it is LESS THAN 5 so the answer is 29.5
2) 84.78 7 is in the tenths place look at the number after this.. 8: it is GREATER THAN 5 so the answer is 84.8
3)1017.36 3 is the tenths place look at the number after this.. 6: it is GREATER THAN 5 so the answer is 1017.4
Hope that helps

6 0

4 years ago

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Natali [406]

Answer: 24

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3 years ago

A group of adult males has foot lengths with a mean of 26.88 cm and a standard deviation of 1.13 cm. Use the range rule of thumb

kompoz [17]

Answer:

The adult male foot length of 24.3 cm is significantly low.

Step-by-step explanation:

We have been given that a group of adult males has foot lengths with a mean of 26.88 cm and a standard deviation of 1.13 cm. We are asked to find the range rule of thumb to determine whether he adult male foot length of 24.3 cm significantly low or significantly high.

The range rule of thumb states that usual values in a normal standard deviation lies within 2 standard deviation from mean that is $\mu-2\sigma$ , where $\mu=\text{ Mean and }\sigma=\text{Standard deviation}$ .

Let us find the range of possible values.

$28.88-2(1.13)$

$28.88-2.26$

$26.62$

Since 24.3 is less than lower value of range (26.62), therefore, the adult male foot length of 24.3 cm is significantly low.

7 0

3 years ago