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olga2289 [7]
2 years ago
13

Hello can you answer these?

Mathematics
1 answer:
Elenna [48]2 years ago
3 0

Answer:

The first one is C

Step-by-step explanation:

The ramp is equal to 180

180-6 = 174

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Leanne can type 212 words in 4 minutes what is her average typing speed in one minute
Alinara [238K]

212 words /4 minutes

53 words per minutes

6 0
3 years ago
A random sample has been selected from a population. The point estimate = 78.65 and margin of error E = 8.24 for a 90% confidenc
fiasKO [112]

Answer:

90% confidence interval: (70.41,86.89)

Step-by-step explanation:

We are given the following in the question:

Point estimate = 78.65

Margin of error, E = 8.24

Confidence level = 90%

Significance level = 10%

Formula:

\text{Point estimate} \pm \text{Margin of error}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.10} = \pm 1.64

78.65 \pm 8.24 = (70.41,86.89)

(70.41,86.89) is the required 90% confidence interval.

5 0
3 years ago
What is the area of the shaded part of the square?
scZoUnD [109]

Answer: <em>c) 4a² - ab</em>

Step-by-step explanation:

<em>A = (2a)² - ab = 4a² - ab</em>

7 0
2 years ago
Write a word problem that could be solved using the expression 2x+60​
Sonbull [250]

Answer:

Step-by-step explanation:

james want to buy a sirt that cost 95 dollars. he only has 60 dollars saved.

if james gets paid 2 dollars a day how many days would he have to work to get 80 dollars.

solve for x

y=2x+60

95=2x+60

3 0
3 years ago
Line JK passes through points J(-4,-5) and K(-6,3). If the equation of the line is written in slope-intercept form, y-mx+b, what
Ksju [112]
y=mx+b \\ \\&#10;(x,y)=(-4,-5) \hbox{ and } (x,y)=(-6,3) \\ \Downarrow \\&#10;-5=-4m+b \ \ \ \ \ \ \ \ \ \ \ \ \ \ | \times (-3) \\&#10;3=-6m+b \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\times 2 \\ \\&#10;15=12m-3b \\&#10;\underline{6=-12m+2b} \\&#10;21=-b \ \ \ \ \  \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  |\times (-1) \\&#10;\boxed{b=-21}

The value of b is -21.
4 0
3 years ago
Read 2 more answers
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