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oksian1 [2.3K]
4 years ago
9

Evaluate: 5 - 3 x when x = - 7

Mathematics
2 answers:
Tema [17]4 years ago
5 0

Use the substitution method

5-3x

5-3(-7)

Do the bracket first

-3*-7= 21

5+21= 26

Answer : 26

8_murik_8 [283]4 years ago
4 0

Answer:

5+-21=-16

Step-by-step explanation:

you distribute 3 into -7 nd you get -21 then you add 5 to -21 to get -16

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A number plus itself, plus twice itslef, plus 4 times itself, is equal to -104. what is the number?
Nutka1998 [239]
Let's represent this unknown number with the variable 'n'
n + n + 2n + 4n = -104

Explanations:
'n+n' - a number plus itself
'+2n' - plus twice itself
'+4n' - plus 4 times itself


Anyway:
n + n + 2n + 4n = -104
Simplify:
8n = -104
Divide both sides by 8:
n = -13

The number is -13
Good luck! If you need me to explain something in more depth, just ask :))
-T.B.
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3 years ago
A bag contains 6 red and 10 black marbles. If you pick a marble, record its color and return it to the bag 200 times, how many t
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4 years ago
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Which of the following rational functions is graphed below?
Mars2501 [29]

Answer:

Option B.

Step-by-step explanation:

We can see that we have an asymptote at x = 2

Remember that in a rational function, the asymptote is at the x-value such that the denominator is equal to zero.

So, the denominator is something like:

(x + a)

we have that the denominator is zero when x = 2

Then:

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solving that for a, we get:

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Then the denominator of the rational function is:

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6 0
3 years ago
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Answer:

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Step-by-step explanation:

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UNO [17]

Answer:

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Step-by-step explanation:

2y+6=1 -3y

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y=-1

6 0
4 years ago
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