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Alchen [17]
2 years ago
11

9\\ x+2y=-25\\what is value of x" alt="x+y=-9\\ x+2y=-25\\what is value of x" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
ExtremeBDS [4]2 years ago
5 0

x + y = -9

x + 2y = -25

Rewrite the first equation as x = -9-y

Relace x in the second equation:

-9-y + 2y = -25

Simplify:

-9 +y = -25

Add 9 to both sides:

y = -16

Now you know y,, replace y in the first equation and solve for x:

x -16 = -9

Add 16 to both sides:

x = 7

Answer: x = 7

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1/2 sq. unit 1/2 sq. unit 1 sq. unit 1/2 sq. unit 1/2 sq. unit What is the area of the entire rectangle in square units? Explain
neonofarm [45]

Answer:

  • 3 sq. units

Step-by-step explanation:

<u>Entire area is the sum of areas of sections:</u>

  • A = 1/2 + 1/2 + 1 + 1/2 + 1/2 =
  • 1+ 4*1/2 =
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4 0
3 years ago
Work out the circumference of this circle.
Arada [10]

Answer: 52.7856cm

Step-by-step explanation:

Circumference of a circle = 2πr

Note that radius = Diameter / 2 = 16.8/2 = 8.4cm

Circumference = 2πr

= 2 × 3.142 × 8.4

= 52.7856cm

Therefore, the circumference of the circle is 52.7856cm

6 0
3 years ago
Solve -9g+11&lt;-15g-6+7g.
MArishka [77]

Answer: g>17

Step-by-step explanation:

-9g+11

Move the g-terms to the left side. and the independent terms to the right side. Remember to change the sign if you move from one side to another.

-9g+15g-7g

-16g+15g

-g

Divide by -1 on both sides to make g positive. When it comes to dividing by negatives in inequalities, the inequality sign changes direction.

\frac{-g}{-1}

g>17

5 0
3 years ago
Are these rates equivalent, 96 words typed for 3 minutes; 160 words typed for 5 minutes
monitta
<h2>Greetings</h2>

Answer:

Yes, they are.

Step-by-step explanation:

<h3>1st rate)</h3>

Lets simplify both rates to the rate typer per minute.

(m is minutes)

3m = 96

Divide both sides by 3:

\frac{3m}{3} = \frac{96}{3}

m = 32

So the rate is 32 words per minute.

<h3>2nd rate</h3>

5m = 160

Divide both sides by 5:

\frac{5m}{5} = \frac{160}{5}

m = 32

<h3>So because the rates per minute are the same, they are equivalent.</h3>
<h2>Hope this helps!</h2>
3 0
2 years ago
PLEASE HELP AND FAST!!!!!!!! WITH STEPS PLEASE
BaLLatris [955]

Answer:

Step-by-step explanation:

5c+1+3c=61

8c+1=61

8c=62

c=7.75

4 0
2 years ago
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