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3 years ago

Complete the equation for the horizontal line that passes through (5, -7) y=

Mathematics

1 answer:

Jet001 [13]3 years ago

5 0

Answer:

y = - 7

Step-by-step explanation:

The equation of a horizontal line parallel to the x- axis is

y = c

where c is the value of the y- coordinates the line passes through.

The line passes through (5, - 7 ) with y- coordinate - 7 , then

y = - 7 ← equation of line

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What is the answer X=-2(6+4)

Digiron [165]

Answer:

X = -20

Step-by-step explanation:

X = -2(6+4)

^ add 6 and 4 together first because they are in parentheses

-2(10)

^ this parenthesis means you want to multiply -2 and 10

because 2 x 10 = 20

that must mean -2 x 10 = -20

therefore, the value of X is -20

X= -20

3 0

3 years ago

The cost to install x number of central air conditioning units for a company is given by the function C(x) = 4000x +1300/3 Use t

Vesna [10]

Given:

The cost to install x number of central air conditioning units for a company is given by the function

$C(x)=\dfrac{4000x+1300}{3}$

To find:

The cost to install 45 air conditioners.

Solution:

We have,

$C(x)=\dfrac{4000x+1300}{3}$

Putting x=45, we get

$C(45)=\dfrac{4000(45)+1300}{3}$

$C(45)=\dfrac{180000+1300}{3}$

$C(45)=\dfrac{181300}{3}$

$C(45)=60433.3333...$

$C(45)\approx 60433.33$

Therefore, the cost to install 45 air conditioners is $60433.33.

4 0

3 years ago

Factor 3/8 out of 3/8d + 3/4

Genrish500 [490]

3/8d + 3/4
3/8(d + 2) <==

6 0

3 years ago

Match each equation with its solution.

Dmitrij [34]

Answer:

1. x = -2 , 3

2. x = - 1, 5

3. -1, 6/5

4. - 0/3, 1.3

Step-by-step explanation:

$ln(x+5)=ln(x-1)+ln(x+1)\\\\x+ 5 = (x-1)(x+1)\\\\x + 5 = x^2 - 1\\\\x^2 - x - 6 = 0 \\\\x^2 - 3 x + 2 x - 6 =0 \\\\x(x-3)+2(x-3)=0\\\\x = -2 and 3$

$e^{x^{2}}=e^{4x +5}\\\\x^2 - 4x - 5 = 0 \\\\x^2 - 5x + x - 5 = 0 \\\\x (x-5)+1 (x-5)=0\\\\x = -1 and 5$

$log_{4}(5x^2 +2)=log_{4}(x +8)\\\\5x^2 - x - 6 = 0 \\\\5 x^2 - 6 x + 5x- 6 = 0 \\\\5 x (x + 1)-6(x+1)=0\\\\x = -1 and \frac{6}{5}$

$log(x-1)+log 5x = 2\\\\5 x (x-1) =2 \\\\5x^2 - 5x -2 = 0 \\\\x = \frac{5\pm\sqrt{25+40}}{10}\\\\x = \frac{5\pm 8}{10}\\\\x = 1.3, - 0.3$

8 0

3 years ago

What is the dependent quantity, and which variable should represent it?<br> y= -5x + 100

Montano1993 [528]

X = 20. Hope this helps!

4 0

3 years ago

Read 2 more answers