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Savatey [412]
2 years ago
5

Simplify the expression. 13 + 6(-3) + (-23)

Mathematics
2 answers:
Galina-37 [17]2 years ago
6 0
13-18-23=-28


I know this because you combine like germs
Illusion [34]2 years ago
4 0

Answer:

-28

Step-by-step explanation:

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Y=1/4x−2y=−2x+3 help solve problem.
8_murik_8 [283]

Answer:

  (x, y) = (2 2/9, -1 4/9)

Step-by-step explanation:

Equate the values of y and solve for x.

  1/4x -2 = -2x +3

  (2 1/4)x = 5 . . . . . . . . add 2+2x to both sides

  x = 20/9 = 2 2/9 . . . multiply by 4/9

  y = -2(2 2/9) +3 = -4 4/9 +3 . . . . substitute for x in the second equation

  y = -1 4/9

The solution is x = 2 2/9, y = -1 4/9.

7 0
3 years ago
As part of a quality-control program, 4 batteries from a box of 17 is chosen at random for testing. In how many ways can this te
belka [17]

Answer:

This test batch can be chosen in 2380 ways

Step-by-step explanation:

The order in which the batteries are chosen is not important. So we use the combinations formula to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

In how many ways can this test batch be chosen?

4 batteries from a set of 17. So

C_{17,4} = \frac{17!}{4!(17-4)!} = 2380

This test batch can be chosen in 2380 ways

5 0
3 years ago
What is. the fraction1/5 of 80?
Yuliya22 [10]
\frac{1}{5} \times 80=\frac{80}{5}=\frac{16 \times 5}{5}=16
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3 years ago
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The sine of any acute angle is equal to the cosine of its complement. The cosine of any acute angle is equal to the sine of its complement. of any acute angle equals its cofunction of the angle's complement. Yes, there is a "relationship" regarding the tangent of the two acute angles (A and B) in a right triangle.


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igor_vitrenko [27]
The answer to (r -3s2t)4 is 4r- 24st
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3 years ago
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