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LekaFEV [45]
3 years ago
13

Someone please help thank you

Mathematics
2 answers:
Leni [432]3 years ago
4 0

Answer:

7:12

Step-by-step explanation:

21 and 36 are both multiples of 3.

3 times 7 is 21, and 3 times 12 is 36.

Now, this ratio becomes: 3 x 7 : 3 x 12

Dividing by 3 on both sides,, we have: 7:12. The ratio 7:12 can't be simplified further, so that's the answer.

Let me know if this helps!

dedylja [7]3 years ago
3 0

the answer above is correct

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the price per share of a stock decreased from $90 per share to $36 per share. by what percent did the price of the stock decreas
givi [52]

Answer:

60%

Step-by-step explanation:

we know that

the price per share of a stock decreased from $90 per share to $36 per share

In this problem

$90 represent the 100%

so

using proportion

Find out what percentage represent the difference of ($90-$36)

($90-$36)=$54

Let

x ----> the percentage of the difference

\frac{100\%}{\$90}=\frac{x}{\$54}\\\\x=54(100)/90\\\\x=60\%

8 0
3 years ago
There are 20 children in the cast of a class play, and 8 of the children are boys. of the boys, 4 have a speaking part in the pl
kotykmax [81]
<span>it all looks confusing when we try to juggle with all those numbers in the head. The problem can be solved systematically by constructing a contingency table.
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5 0
3 years ago
Read 2 more answers
A fitted multiple regression equation is Y = 28 + 5X1 - 4X2 + 7X3 + 2X4. When X1 increases 2 units and X2 increases 2 units as w
ad-work [718]

Answer:

A. Increase by 2

Step-by-step explanation:

Given that a  fitted multiple regression equation is

Y = 28 + 5X_1 -4X_2 + 7X_3 + 2X_4

This is a multiple regression line with dependent variable y and independent variables x1, x2, x3 and x4

The coefficients of independent variables represent the slope.

In other words the coefficients represent the rate of change of y when xi is changed by 1 unit.

Given that x3 and x4 remain unchanged and x1 increases by 2 and x2 by 2 units

Since slope of x1 is 5, we find for one unit change in x1 we can have 5 units change in y

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Similarly for 2 units change in x2, we expect -2(4) units change in Y

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10-8 =2 change in y

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5 0
3 years ago
1.) Natalie is a lab technician and earns $10.65 per hour. What are her wages for 40 Hours?
Contact [7]

Answer:

Add

Step-by-step explanation:

10.65*40=426

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5 0
2 years ago
Find the area under the standard normal curve to the left of
JulijaS [17]
A. z = 0.74
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d. z = -0.15
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6 0
3 years ago
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