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2 years ago

What is the solution to the system of equation

Mathematics

1 answer:

maksim [4K]2 years ago

4 0

Answer:

D. (2 , 1)

Step-by-step explanation:

STEP 1: Replace all occurrences of $y$ with $-3x+7$ in each equation.

$-x+14=12\\y=-3x+7$

STEP 2: Solve for $x$ in the first equation.

$x=2\\y=-3x+7$

STEP 3: Replace all occurrences of $x$ with $2$ in each equation.

$y=1\\x=2$

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2 years ago

-3x+10=34 solve for x

goblinko [34]

<h3>Answer:</h3><h3>x=−8</h3><h3 />

Step-by-step explanation:

<h3>Let's solve your equation step-by-step.</h3>

−3x+10=34

<h3>Step 1: Subtract 10 from both sides.</h3>

−3x+10−10=34−10

−3x=24

<h3>Step 2: Divide both sides by -3.</h3><h3 />

−3x/−3 = 24/−3

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2 years ago

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What value from the set {1, 2, 3, 4, 5} make the equality true?<br><br> n + 2 < 6

s344n2d4d5 [400]

1-3 are all less than 6

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2 years ago

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The number of days that homes stay on the market before they sell in Houston is bell-shaped with a mean equal to 56 days. Furthe

antoniya [11.8K]

Answer:

D. 8

Step-by-step explanation:

We have been given that the number of days that homes stay on the market before they sell in Houston is bell-shaped with a mean equal to 56 days. Further, 95 percent of all homes are on the market between 40 and 72 days.

As per empirical rule 95% of the data on bell curve lies between 2 standard deviations of mean.

So we can set an equation as:

$72-56=2\sigma$ or

$40-56=-2\sigma$

$16=2\sigma$

$\frac{16}{2}=\frac{2\sigma}{2}$

$8=\sigma$

$40-56=-2\sigma$

$-16=-2\sigma$

$\frac{-16}{-2}=\frac{-2\sigma}{-2}$

$8=\sigma$

Therefore, the standard deviation for our given data is 8 and option D is the correct choice.

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2 years ago

Is 0.7 greater or less than 9/10

Margarita [4]

Answer:

less than

Step-by-step explanation:

.7 = 7/10

7/10 is less than 9/10

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3 years ago

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