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Veseljchak [2.6K]
3 years ago
9

What is the solution to the system of equations below?

Mathematics
1 answer:
sattari [20]3 years ago
7 0
If you add the two equations together, you'll get:
5x=-10, which gives x = -2.

Replace x = -2 in any of the two equations and you'll get y = 1.

So correct answer is D: x=-2,y=1
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Solve the system by substitution: <br> 3x + 2y = 26<br> Y=x + 3
Orlov [11]

Answer:

x = 4

Step-by-step explanation:

3x + 2y = 26

y = x + 3

Plug in the equation for y

3x + 2(x + 3) = 26

Multiply the 2 with what is in the parantheses

3x + 2x + 6 = 26

Combine like terms and solve for x

5x + 6 = 26

5x = 20

x = 4

5 0
3 years ago
Read 2 more answers
Which of the following could be used to calculate the area of a sector in the circle shown below
lara [203]

Answer:

Therefore the Last option is correct

\textrm{Area of Sector ACD}=\pi (8\ in)^{2}\times (\frac{42}{360})

Step-by-step explanation:

Given:

Radius = r = 8 in

θ = 42°

To Find:

Area of Sector = ?

Solution:

We know that

\textrm{Area of Sector}=\pi (Radius)^{2}\times \frac{\theta}{360}

Substituting the given values in the formula we get

\textrm{Area of Sector ACD}=\pi (8\ in)^{2}\times (\frac{42}{360})

Which is the required Answer.

Therefore the Last option is correct

\textrm{Area of Sector ACD}=\pi (8\ in)^{2}\times (\frac{42}{360})

8 0
3 years ago
How long will it take for an investment of $2000 to double in value if the interest rate is 7.25%
lesya692 [45]

Answer:

t = ln2/0.075

t = 9.24 years.

hope this helps

3 0
3 years ago
When 200 gallons of oil were removed from a tank, the volume of oil left in the tank was 3/7 of the tank's capacity. what was th
ki77a [65]

Answer:

Step-by-step explanation:

"When 200 gallons of oil were removed from a tank" algebraically looks like this:

V - 200.

"...the volume of oil left in the tank was 3/7 of the tank's capacity" algebraically looks like this:

3/7(V)

Therefore, the equation is

V - 200 = 3/7(V)

Begin by multiplying both sides by 7:

7(V - 200) = 3V and

7V - 1400 = 3V so

-1400 = -4V so

V = 350 gallons

That's if the volume of the oil in the tank was 3/7 of the tank's capacity.

For the other part of the problem, we set up the equation almost the same, except the 3/7 is a 1/2:

V - 200 = 1/2(V)

Multiplying both sides by 2 gives you

2(V - 200) = V and

2V - 400 = V so

-400 = -V so

V = 400

7 0
3 years ago
How do i simplify 14/24.
dolphi86 [110]
Simplify 14/24 to the simplest form - Fractions Simplifier. Use this fractions simplifier calculator to reduce any fraction to lowest terms. You just need to enter the numerator and denominator values. The answer will be a proper fraction or a mixed number and also the decimal equivalent to the given fraction.
8 0
3 years ago
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