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3 years ago

Can you help with 13,14,15,16 one of those or all of them please

Mathematics

1 answer:

salantis [7]3 years ago

5 0

15. the answer is 4/10 I think

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If mn = 16 and m^2 + n^2 = 68 then (m+n)^2 =

Dima020 [189]

Answer:

B. 100

Step-by-step explanation:

(m + n)^2

= m^2 + 2mn + n^2

Rearrange

(m^2 + n^2) + 2mn

Substitute

(68) + 2*16

= 68 + 32

= 100

7 0

2 years ago

Martin has 64 sticks of gum altogether. How many packs of gum does he have?

klasskru [66]

Doesn’t make sense.. how much can fit into one packet

4 0

3 years ago

The cycle time for trucks hauling concrete to a highway construction site is uniformly distributed over the interval 40 to 75 mi

jeka57 [31]

Answer:

0.8333 = 83.33% probability that the cycle time exceeds 50 minutes if it is known that the cycle time exceeds 45 minutes

Step-by-step explanation:

A distribution is called uniform if each outcome has the same probability of happening.

The uniform distributon has two bounds, a and b, and the probability of finding a value higher than x is given by:

$P(X > x) = \frac{b - x}{b - a}$

Uniformly distributed over the interval 40 to 75 minutes.

This means that $a = 40, b = 75$

It is known that the cycle time exceeds 45 minutes

This means that we can use $a = 45$

What is the probability that the cycle time exceeds 50 minutes?

$P(X > 50) = \frac{75 - 50}{75 - 45} = 0.8333$

0.8333 = 83.33% probability that the cycle time exceeds 50 minutes if it is known that the cycle time exceeds 45 minutes

8 0

3 years ago

3x-9 when x=3<br> Solve this

Citrus2011 [14]

Answer:

Step-by-step explanation:

3x - 9 if x = 3

Substitute:

3(3) - 9 =

9 - 9 = 0

This can be written as a function: f(x) = 3x - 9

f(3) = 3x - 9

f(3) = 3(3) - 9

f(3) = 9 - 9

f(3) = 0

-Chetan K

3 0

3 years ago

Simplify the ratio 0.08:0.12

mr Goodwill [35]

$0.08:0.12\\\\0.08\cdot100=8\\0.12\cdot100=12\\\\0.08:0.12\to8:12\\\\8:4=2\\12:4=3\\\\0.08:0.12\to8:12\to2:3$

4 0

3 years ago

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