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Ilia_Sergeevich [38]
3 years ago
12

Lee needed to make drapes the length from the floor to the top of the window. The wall beneath the window had the height of 2 2/

3 feet and the height of just the window measured 2 3/4 feet. How long do the drapes have to be?
Mathematics
1 answer:
Tatiana [17]3 years ago
7 0
Since drapes have to be covered all over the window and the beneath of the window, both lengths have to be added.

(2 2/3) + ( 2 3/4) 
(8/3) + (11/4)
(32+33)/12
65/12
5 5/12
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Which equation, when graphed, has x-intercepts at (-1,0) and (-5,0) and a y-intercept at (0, -30)?
Vladimir [108]

If a function has roots -1 and -5, it must be in the form

f(x)=a(x+1)(x+5)

We can fix the coefficient a by imposing the passing through (0,-30):

f(0)=-30=a(1)(5)\iff a=-6

So, the function is

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7 0
3 years ago
This is for 100 points which is rather rare so please help me out
Lelechka [254]

Answer:

C) $281.25

Step-by-step explanation:

3/15 describes you having to pay the bill in 15 days with a 3% discount.

3% = 0.03

289.95 - (298.95 x 0.03)

289.95 - 8.6985

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The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using premium fuel is a normally distribu
Elodia [21]

Answer:

a) Standard error = 0.5

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Step-by-step explanation:

We are given the following in the question:

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Sample standard deviation = 3.00 mpg

Sample size , n = 36

Standard Error =

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99% Confidence interval:

\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.01} = \pm 2.575

20.50 \pm 2.575(\displaystyle\frac{3}{\sqrt{36}})= 20.50 \pm 1.2875 = (19.2125,21.7875)

4 0
3 years ago
Choose the formula for finding the slope m of a nonvertical line that contains the two distinct points left parenthesis x 1 comm
scoray [572]

\text{Consider the nonvertical line passing through the points }(x_1,y_1)\\
\text{and }(x_2, y_2).\\
\\
\text{we know that slope of any line is the angle between the line from the}\\
\text{positive x-axis.}\\
\\
\text{The slope of a line is given by the ratio of rise over run.}\\
\\
\text{that is the ratio of the differnce of y-coordinates to the difference}\\
\text{to the difference of the x-coordinate.}

\text{hence the slope of the nonvertical line through the given points is}\\
\\
m=\frac{y_2-y_1}{x_2-x_1}

8 0
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Racheal has scored 81,70,95,73,and 72 on her previous five tests. What score does she need on her next test so her average mean
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