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3 years ago

Help please !!!! I need help

Mathematics

2 answers:

Stells [14]3 years ago

6 0

6x^2-10x^2= -4x^2 then -5x+8=-13 and then -8 turns positive. So the answer would be -4x^2-13x+8

timofeeve [1]3 years ago

5 0

Answer:

Step-by-step explanation:

bmnvkvv

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If the radius is 43, find<br> the diameter.

RSB [31]

Diameter = 2 × radius

radius= 43 CM

diameter= 2× 43 CM

diameter= 86 CM

8 0

3 years ago

Read 2 more answers

The heights of a maple tree and a cherry tree have a ratio of 5:2. If the maple tree grew 20 cm and 20 cm was cut off the top of

elena-14-01-66 [18.8K]

Let x be the <span>heights of a maple tree and y be the height of the cherry tree.
We know:
</span> $\frac{x}{y} = \frac{5}{2}$
<span>The new ratio is obtained like this:
</span> $\frac{x+20}{y-20} = \frac{3}{1}$ .
From the above equation we get $x= (y-20)\frac{3}{1} -20$ .
then $\frac{ (y-20)\frac{3}{1} -20}{y} = \frac{5}{2}$
Solving the above equation for y we get: $y=160$
So $x=400$
So the first tree is (400-160=240) more taller than cherry tree.

7 0

3 years ago

An airline is planning its staffing needs for the next year. If a new route is approved, it will hire 837 new employees. If a n

dusya [7]

Considering a discrete distribution, it is found that the expected number of new employees to be hired by the airline is of 446.16.

<h3>What is the mean of a discrete distribution?</h3>

The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.

In this problem, considering the situation described in the text, the distribution is given by:

P(X = 837) = 0.37.

P(X = 199) = 0.63.

Hence, the expected value is given by:

E(X) = 0.37(867) + 0.63(199) = 446.16.

More can be learned about discrete distributions at brainly.com/question/24855677

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2 years ago

There are 9 girls and 11 boys in a class at a Private

blagie [28]

Answer:

35%

Step-by-step explanation:

9+11=20

3+4=7

20*5=100

7*5=35

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3 years ago

You are selecting what of your left over Halloween candy you are going to eat. Now if you don't do Halloween, it is random candy

Liula [17]

The answer will be 1 out of 6 or 1/6

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3 years ago