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2 years ago

5 (2a +7b) Plss help I will give brainliest!!

Mathematics

2 answers:

skelet666 [1.2K]2 years ago

7 0

Answer:

10a+35b

Step-by-step explanation:

distributive property

andriy [413]2 years ago

6 0

Answer:

10a + 35b

Step-by-step explanation:

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Awnser this pls im in a bad mood

Drupady [299]

Answer:

I think its 1/6 and if I'm wrong I'm very sorry but I think its 1/6

Step-by-step explanation:

3 0

1 year ago

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In a recent poll, 44% of survey respondents said that, if they only had one child, they would prefer the child to be a boy.

viva [34]

Answer:

a) The probability that 71 of 150 will prefer boy child is 71/150 or 0.47

b) The result contradicts the poll actual percentage is 47.33% which is 3.33% more than the poll predicted

Step-by-step explanation:

If 71 out of 150 prefer boy child

The probability that the 71 will prefer boy child is

= 71/150

The actual percentage is

(71/150)*100%

= 47.33%

This contradicts the poll as this is more than the poll predicted. That means Less than 71 of 150 actually preferred boy child.

5 0

3 years ago

how can u stand applying math to every thing doesn't it make every thing repetitive and why does every thing need a pattern does

Dominik [7]

Because math sucks like really really sucks

5 0

2 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

-1/3 + (-7/4)<br><br> Ill give this cookie to who solves it

elena-14-01-66 [18.8K]

Answer:

-25/12

Step-by-step explanation:

first, you need a common denominator. in this case, it's 12.

-1/3=-4/12

-7/4=-21/12

and then you add

-4+-21=-25

so -25/12 is your answer

5 0

2 years ago

Read 2 more answers