3 years ago

What is the value of the expression –40 – (–50 – 2) + 10? Plz help

Mathematics

1 answer:

Dafna1 [17]3 years ago

7 0

The answer is 22 I looked it up to make sure i was right

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Kimberly has $120 to spend at the bookstore. Kimberly buys a hardcover book for $36, as well as some gift cards for her family a

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Answer:

she can buy 5 more

Step-by-step explanation:

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2 years ago

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What will it cost to tile a rectangular floor measuring 299 feet by 34 feet if the tile costs $11 per square foot?

dexar [7]

Area = 299*34 = 10166 ft^2

Cost = 10166 * 11 = $111,826 (answer)

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3 years ago

Will it collect 80 half-liter bottles in a 50-liter barrel<br> True False

aniked [119]

Answer:

Step-by-step explanation:

Will it collect 80 half-liter bottles in a 50-liter barrel

True False

80 half-liter = 40 liters

50 - 40 = 10 liters

the answer is TRUE

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2 years ago

Solve for each system of equations by substitution or elimination.

Tems11 [23]

QUESTION 1

The given system of equations are:

$y=x^2+5x+1$

$y=x^2+2x+1$

We equate the two equations to get:

$x^2+5x+1 =x^2+2x+1$

$x^2 - {x}^{2} + 5x - 2x = 1 - 1$

$3x = 0$

$x = 0$

When x=0,

$y=0^2+2(0)+1 = 1$

The solution is (0,1)

QUESTION 2

The given equations are:

$y=x^2-2x - 1$

and

$y= -x^2-2x-1$

We equate both equations to get:

$x^2-2x - 1 = -x^2-2x-1$

Group similar terms,

$x^2 + {x}^{2} -2x + 2x= -1 + 1$

$2 {x}^{2} = 0$

$x = 0$

We put x=0 into any of the equations to find y.

$y= -0^2-2(0)-1 = - 1$

The solution is (0,-1).

QUESTION 3

The given equations are:

$y=x^2+2x+1$

and

$y=x^2+2x-1$

We equate both equations:

$x^2+2x+1 = x^2+2x-1$

Group similar terms:

$x^2 -x^2+2x = -1 - 1$

$0 = -2$

This is not true.

Hence the system has no solution.

6 0

3 years ago

6.58x - 8.36x = 3.98x - 27.33<br> Round your answer to the nearest hundredth

Ilya [14]

Answer:

-5.76x=-27.33

-6x=-27

Step-by-step explanation:

you would bring the 3.98 over to the other side, so it would be -3.98+6.58=2.6-8.39=-5.76

4 0

3 years ago

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