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Dimas [21]
2 years ago
7

-2.8 f +0.9 f - 12 - 4

Mathematics
2 answers:
zloy xaker [14]2 years ago
7 0
-1.9f-16

-1.9f-12-4=
-1.9f-16



alisha [4.7K]2 years ago
3 0

Answer:

2.1

Step-by-step explanation:

8

10

−

2

5

)+0.9

=3(

4

5

−

2

5

)+0.9

=3(

2

5

)+0.9

=

6

5

+0.9

=2.1

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Solve the following system of equations by the substitution method.
ruslelena [56]
5x = y + 6 (I)
2x - 3y = 4 (II)
-------------------
We have:
5x = y + 6 → x =  \frac{y+6}{5}

Soon:
2x - 3y = 4 → 2* (\frac{y+6}{5}) - 3y = 4\to \frac{2y+12}{5} - 3y = 4
<span>least common multiple (5)
</span>\frac{2y+12}{5} - 3y = 4\to \frac{2y+12}{\diagup\!\!\!\!\!5} - \frac{15y}{\diagup\!\!\!\!\!5} = \frac{20}{\diagup\!\!\!\!\!5}
2y + 12 - 15y = 20
- 15y + 2y = 20 - 12
- 13y = 8
\boxed{\boxed{y = - \frac{8}{13} }}\end{array}}\qquad\quad\checkmark


4 0
3 years ago
The complement of an angle is one-sixth the measure of the supplement of the angle. What is the measure of the complement angle?
cestrela7 [59]

Answer:

The measure of the complement angle is 18\°

Step-by-step explanation:

Let

x-----> the angle

we know that

The complement of an angle is equal to (90-x)\°

The supplement of an angle is equal to (180-x)\°

we have

The complement of an angle is one-sixth the measure of the supplement of the angle

(90-x)\°=(1/6)(180-x)\°

solve for x

(540-6x)\°=(180-x)\°

(6x-x)=(540-180)\°

(5x)=(360)\°

x=72\°

Find the measure of the complement angle

(90-x)\° ------> (90-72)=18\°

7 0
2 years ago
Read 2 more answers
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Hitman42 [59]
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exis [7]

Answer: 15.96$

Step-by-step explanation:

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3 years ago
PLEASE HELP! GIVING BRAINLIEST!
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Answer:

Look down.

Step-by-step explanation:

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2. x= 7

3. d= -15/7

4. y= 6/23

5. x= 24

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7. x= -110

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2 years ago
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