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Ivan
3 years ago
5

Solve each system of equations.

Mathematics
2 answers:
sweet-ann [11.9K]3 years ago
6 0
1. y=-3
2. y=33
y=-1
( sorry if number 2 is wrong)
Leto [7]3 years ago
5 0
1. 2(4) - 4y = 20

8 -4y = 20
8-8 -4y = 20 - 8
-4/-4y = 12/-4
y = -3
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quester [9]

Answer:

in a region with a letter

Step-by-step explanation:

For a certainty, then probability is 1.

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This means P(A)+P(B)+P(C)+P(D)=1

This is equivalent to:

P(A or B or C or D)=1

Hence for certainty, the region must be:

A or B or C or D

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7 0
3 years ago
Chords AC and DB intersect at point E. Find the value of x.
Elina [12.6K]

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-3 +3(n+8)= 2(1 + 6n) - 8
lilavasa [31]

Answer:

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21+3n = 12n -6

Subtract 3n from each side

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4 0
3 years ago
Read 2 more answers
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kakasveta [241]

<u><em>Answer:</em></u>

168

<u><em>Explanation:</em></u>

<u>Before we begin, remember the following:</u>

+ve * +ve = +ve                     -ve * -ve = +ve

+ve * -ve = -ve                       -ve * +ve = +ve

<u>Now, for the given problem we have:</u>

(-4) * (6) * (-7)

<u>Let's take the first two terms:</u>

(-4) * (6)

Based on the above rules, the product will be negative

<u>Therefore, </u>

(-4) * (6) = -24

<u>Now, the expression became:</u>

(-24) * (-7)

Again, based on the above rule, the product here will be positive

<u>Therefore,</u>

(-24) * (-7) = 168

Hope this helps :)

4 0
3 years ago
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gladu [14]
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