3 years ago

What is the answer to this

Mathematics

1 answer:

Murrr4er [49]3 years ago

8 0

Answer:

I haven done that in a hot minute. jeezzz

Step-by-step explanation:

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Mary says that -5 x 2 = -3. Explain the mistake Mary made and write the correct number sentence including the correct answer.

stira [4]

Answer:

it should be -10

Step-by-step explanation:

5 x 2 is 10 but you add the negative. Mary added instead of multiplied.

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3 years ago

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What is the solution to the system of equations? Use the substitution method. {y=−2x+53x−4y=2

klio [65]

$y = - 2x + 53x - 4y = 2 \\ y = 51x - 4y = 2 \\ > y = 51 x - 4y \\ > 51x - 4y = 2$
$y = 51x - 4y \\ 5y = 51x \\ y = \frac{51}{5} x$
Substitute 51/5x into
$51x - 4( \frac{51}{5} x) = 2 \\ 51x - 40.8x = 2 \\ 10.2x = 2 \\ x = 2 \times \frac{10}{102} \\ x = \frac{10}{51} \: aka \: 0.196$
Substitute that into
$y = \frac{51}{5} \times \frac{10}{51} \\ y = 2$
Hope this helps. Answer should be correct. Unless your quadratic equation is wrongly stated.

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2 years ago

A 4-foot-long sandwich is cut into servings that are each foot long. How many servings will there be after the sandwich is cut?

NeX [460]

Answer: 12

Step-by-step explanation:

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3 years ago

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Diana bought a car for $5000 and plans to sell it to make a 20% profit. What should she sell it for to make the profit she desir

nalin [4]

You need to know 20% of $5000. "Of" means "times".

$5000 x 0.20 (which is 20% written as a decimal)

=$1000 profit she wants to make

$5000 (original price) + $1000 (profit) = $6000 (sale price)

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Consider the linear equation y=4x-7 find the value of y that makes the given ordered pair a solution to the equation (3, y) Y=

olchik [2.2K]

Y = 4x - 7 is a line with a slope of 4 and y-intercept of -7.

plug in any X value, for example 1 and you get the following

y = 4(1) - 7

y = -3

(1,-3) is a point that satisfies the equation y = 4x - 7

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2 years ago