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aivan3 [116]
3 years ago
5

A wildlife reserve had 8 elephant calves born during the summer and now has 31 total elephants. How many elephants were in the r

eserve before summer began. Write an equation
Mathematics
1 answer:
Elza [17]3 years ago
6 0
Because you now have 31 you - 8 from 31
equation 31-8=e
solve 23 elephant before summer
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The supplement of 1/5 of a complete angle is 150degrees
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3 years ago
an investor invested a total of 2500 dollars in two mutual funds.one fund earned 5 percent profitwhile the other earned 3 percen
bonufazy [111]

Total investment=$2500

Let say David earned 5% profit and Harry earned 3% profit.

If <u>David</u> invested y dollar in mutual fund then <u>Harry</u> would invest,

Harry would invest,$(2500-y)

Total profit would equal to sum of 5% of money <u>David</u> invested and 3% of money <u>Harry</u> invested,

So,

5% × y +3% ×(2500-y)=<u>total profit</u>

0.05×y+0.03×(2500-y)=$111

0.05y+0.03×2500-0.03y=111

0.02y+75=111

0.02y=111-75

y=36/0.02

y=$1800

which is the amount <u>David</u> invested.

The amount invested by <u>Harry</u> would be,

=$(2500-1800)

=$700

4 0
3 years ago
How to find x in a triangle with only two known lengths
kow [346]
A triangle is 180 degrees. X+first length+second length=180. Then solve
8 0
3 years ago
Read 2 more answers
Which of the following correlation coefficients represents the weakest correlation?
AlekseyPX

The correlation coefficient that represents the weakest correlation amongst the given options is -0.1.

<h3>What is correlation?</h3>

Correlation is a statistical measure used to measure the relationship that exists between two variables. A value of one represents a perfect correlation. A value of zero signfies that the variables have no relationship.

So, the correlation coeffieicent with a value closest to zero would have the weakest correlation.

To learn more about negative correlation, please check: brainly.com/question/27246345

6 0
2 years ago
Solve this question—————-
Ber [7]

Answer: (2, -5) (light blue answer choice)

Solving by substitution

−7x+y=−19;−2x+3y=−19

−7x+y+7x=−19+7x (Add 7x to both sides)

y=7x−19

Step: Substitute7x−19 for y in −2x+3y=−19:

−2x+3y=−19

−2x+3(7x−19)=−19

19x−57=−19 (Simplify both sides of the equation)

19x−57+57=−19+57 (Add 57 to both sides)

19x=38

19x/19 = 38/19 (Divide both sides by 19)

x=2

Step: Substitute 2 for x in y=7x−19:

y=7x−19

y=(7)(2)−19

y= −5 (Simplify both sides of the equation)

Therefore: x = 2 and y = −5

5 0
3 years ago
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