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Aneli [31]
3 years ago
10

–2x + 2y = -4 3х + Зу = -18

Mathematics
1 answer:
rodikova [14]3 years ago
3 0

Answer:

(-2, -4)

Step-by-step explanation:

–2x + 2y = -4

3х + Зу = -18

Divide the first equation by 2

–2x/2 + 2y/2 = -4/2

-x +y = -2

Divide the second equation by 3

3х/3 + Зу/3 = -18/3

x + y = -6

Add these equation together

-x +y = -2

x + y = -6

-------------------

0x + 2y = -8

2y = -8

Divide each side by 2

2y/2 = -8/2

y = -4

Now we need x

x+y = -6

x-4 = -6

Add 4 to each side

x-4+4 = -6+4

x = -2

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The original volume of the shape was 250. You come up with this by multiplying all sides together. So, 5x5x10=250.

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So the answer to this is 240.
7 0
3 years ago
Read 2 more answers
Solve for A.................<br><br> H= A/2
grigory [225]

Step-by-step explanation:

First, multiply each side of the equation by

2

to eliminate the fraction while keeping the equation balanced:

2×A=2×h2(a+b)

2A=2×h2(a+b)

2A=h(a+b)

Now, divide each side of the equation by

a

+

b

to solve for

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while keeping the equation balanced:

2Aa+b=h(a+b)a+b

2Aa+b=h(a+b)a+b

2Aa+b=h

h=2Aa+b

3 0
3 years ago
(16 \8) + (24 \ 6)<br> 2<br> DONE
Marina86 [1]

Answer:

6

Step-by-step explanation:

Remember the Order of Operations:

Parentheses

Exponents

Multiplication/Division (whichever comes first)

Addition/Subtraction (whichever comes first)

In this case, we start by simplifying what is in the parentheses:

(16÷8)+(24÷6)

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6

3 0
3 years ago
Read 2 more answers
Starting at 1:00 p.M., The temperature changes -4 degrees Fahrenheit per hour. Write and solve an equation to find how many hour
lara [203]

Answer:

0.25 hours

Step-by-step explanation:

The equation for a linear function is given by:

y = mx + b,

where y and x are variables, m is the rate of change of y with respect to x and b is the initial value of y (value of y when x = 0).

Let x represent the number of hours after 1:00 P.M and let y represent the temperature in degree Fahrenheit.

Let us assume that initial the temperature is 0°F. The temperature changes -4 degrees Fahrenheit per hour. From the equation of a linear function y = mx + b:

m = -4 degrees Fahrenheit per hour, b = 0. Hence:

y = -4x

The time taken to reach -1°F is gotten by substituting y = -1 and finding x:

y = -4x

substituting:

-1 = -4x

x = -1 / -4

x = 0.25 hours

0.25 hours = 0.25 hours * 60 minute / 1 hour = 15 minute

Therefore at 1:15 P.M, the temperature is -1°F

8 0
3 years ago
PLZZZ HELPPP, IF NOT 100% SURE PLZ DONT ANSWER…BRAINLIEST TO FIRST AND CORRECT ANSWER, THX TO SECOND AND CORRECT ANSWER
Vladimir79 [104]

Answer:

2 batches

Step-by-step explanation:

We can divide 7 1/2 by 3 3/4 to get 2, so the factory made 2 batches of granola bars yesterday.

5 0
3 years ago
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