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kotykmax [81]
2 years ago
9

Will mark brainliest. Question’s below! Please! Thank you!

Mathematics
1 answer:
Law Incorporation [45]2 years ago
3 0

Answer:

x = -2, y = -3

Step-by-step explanation:

Solve for y:

If -3x + 9y = -21, and -3x +8y = -18, then -21 - y = -18

Add 18 to both sides:

-3 - y = 0, so y = -3

reconstruct new equation:

-3x + 9(-3) = -21, -3x + 8(-3) = -18

-3x + -27 = -21, -3x + -24 = -18

Using the new equation, solve for x:

add 24 to both sides of each equation :

-3x + -3 = 3, -3x = 6

x=<u>-2</u>

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What should the following equation be multiplied by to eliminate the decimals?6.74x-1.026=0.138.
Evgen [1.6K]

Answer:

b.1000

Step-by-step explanation:

6.74x-1.026=0.138

The smallest decimal goes to the thousandths place, so we need to multiply by 1000

.138

. tenths  hundredths  thousandths

Another way to look at it

.138 = 138/1000  so multiply by 1000 to get rid of the decimal

1.026 is to the same place value so we could pick either one to determine what to multiply by

5 0
3 years ago
A ball is thrown into the air with an upward velocity of 24 ftys. Its height h in feet after t seconds is given by the function
cluponka [151]
The maximum of this parabola is (3/4,16).
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5 0
3 years ago
25
Vanyuwa [196]

Step-by-step explanation:

4(2x-1)+3(2x+5)

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4 0
3 years ago
Read 2 more answers
Solve for X<br> Your answer must be simplified.<br><br> -7x &gt; 10
Bezzdna [24]

Answer:

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Hope this helps!

7 0
3 years ago
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Consider the box-and-whisker plot.
dedylja [7]

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So, 25%

3 0
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