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Dominik [7]
3 years ago
13

X + y = -15, what is the answer?

Mathematics
2 answers:
kvv77 [185]3 years ago
8 0

Answer:

10+5=15

Step-by-step explanation:

Bogdan [553]3 years ago
7 0

Answer:

x = -15 - y

y = -15 - x

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In a fish tank 2/5 of the fish are sturgeon of these 3/4 are yellow tail. What is the total number of yellow tail in the tank
Oduvanchick [21]

Answer:

0.3

Step-by-step explanation:

Use a calculator

4 0
3 years ago
An IQ test is designed so that the mean is 100 and the standard deviation is 12 for the population of normal adults. Find the sa
Julli [10]

Answer:

Step-by-step explanation:

Given that IQ mean is 100 and std dev = 12 for normal adults

Confidence level =90%\\Z critical value = 1.645\\Margin of error = 2\\Margin of error = 1.645* std error =2\\Std error = 1.216

Std error = \frac{12}{\sqrt{n} } =1.216

n=(\frac{12}{1.216} )^2 =97.38

i.e. sample size should be atleast 97

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This is reasonable as this is greater than 30

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5 0
3 years ago
Solve
Deffense [45]

Answer:

The formula for calculating mean is summation x/n

There fore

5

-7

3

2

-6

-4

8

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1

The answer is -4 which A

4

7 0
2 years ago
Craig had a budget of 84 dollars to spend on books and movies. He bought six books at x dollars each and three movies at 12 doll
RideAnS [48]

Answer: (3)12 + 6x = 84

Step-by-step explanation:

We know he definitely bought 3 books for $12 each so we immediately put that in the equation. Then we add that to the unknown (6 books times however much he bought them for) and then we equal it to 84 (his budget). Now we do 3 x 12 which is 36. Our new equation is 36 + 6x = 84. 84 - 36 = 48 so we know 6x = 48. Now divide 48 by 6 to get rid of the 6 and we learn that the variable equals 8. So, x = 8. We now know that he bought 6 books at 8 dollars each.

6 0
3 years ago
Which point is the incenter of ​ △DEF ​ ?
stellarik [79]
It is point G, because that is where the 3 angle bisectors meet.
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3 years ago
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