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3 years ago

A teacher corrected 8 math quizzes in 16 minutes.

Mathematics

1 answer:

Makovka662 [10]3 years ago

8 0

Answer: 32

Step-by-step explanation:

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What property says that -12+12+0

natali 33 [55]

Answer:

Looks like <u>inverse property of addition </u>to me

4 0

4 years ago

Help pleaseee i am awful at math

kupik [55]

Step-by-step explanation:

answer is B

use unitary method to solve it

6 0

3 years ago

Read 2 more answers

Lines f and g are perpendicular. The equation of line f is y = 1/4x + 2. What is

umka2103 [35]

Answer:

y = -4x + (any number)

Step-by-step explanation:

you want to use the negative reciprocal of the slope for line f

so m = -4, since you didn't say any points it has to go through then the

equation of the line is y = -4x + (any number)

8 0

3 years ago

V is the midpoint of UW. If UV = x + 2 and VW = 2x, what is VW?

Elan Coil [88]

Answer:

8 units

Step-by-step explanation:

x + 2 = 2x

2 = 2x - x

x = 2

uW = 2(2+2) = 8

3 0

3 years ago

Read 2 more answers

A rectangular Corn Hole area at the Recreation Center has a width of 5 feet and a length of 10 feet. If

inysia [295]

Answer:

2 feet

Step-by-step explanation:

Let

x ----> the uniform amount added to each side

we know that

The algebraic expression that represent this situation is

$(5+x)(10+x)=84$

solve for x

Apply distributive property

$50+ 5x+10x+x^2=84\\x^2+15x-34=0$

solve the quadratic c equation

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^2+15x-34=0$

$a=1\\b=15\\c=-34$

substitute in the formula

$x=\frac{-15\pm\sqrt{15^{2}-4(1)(-34)}} {2(1)}$

$x=\frac{-15\pm\sqrt{361}} {2}$

$x=\frac{-15\pm19} {2}$

$x=\frac{-15\pm19} {2}=2$

$x=\frac{-15\pm19} {2}=-17$

therefore

The solution is x=2 ft

8 0

3 years ago