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V125BC [204]
3 years ago
15

What is the lcm of 8, 10 and 20

Mathematics
1 answer:
mestny [16]3 years ago
8 0

Answer:

40

Step-by-step explanation:

Multiples of 8:

8, 16, 24, 32, 40, 48, 56

Multiples of 10:

10, 20, 30, 40, 50, 60

Multiples of 20:

20, 40, 60, 80

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Find the equation of a line parallel to −5x+y=2 that contains the point (5,−2). Write the equation in slope-intercept form.
mario62 [17]

Answer:

L2: y-0 = 5/2(x-5)

y = 5/2x-25/2

Step-by-step explanation:

Parallel lines have same slopes.

Line 1,   L1:  5x-2y=20   is in standard form Ax+By=C therefore slope m1= -A/B = -5/-2 = 5/2 or you can solve it for y so you will have the equation in slope-intercept form.

5x-2y = 20

-2y = -5x+20

y = (-5/-2)x+20/(-2)

y = (5/2)x-10 hence m1=5/2 and y-intercept is -10

Line 2 , L2:   y-y1 = m (x-x1),  m=m2=m1=5/2

Point p(5,0) or p(x1,y1) therefore x1=5 , y1=0 and m=5/2

L2: y-0 = 5/2(x-5)

y = 5/2x-25/2

5 0
2 years ago
Every summand of an expression is called a???
cricket20 [7]

Answer:

I think it's called a term.

Hope this helps :)

4 0
2 years ago
2. The value of x + x(x*) when x = 2 is:<br> (a) 10, (b) 16, (c) 18, (d) 36, (e) 64
Aleonysh [2.5K]

Answer:

a

Step-by-step explanation:

2+2(2^2)=2+2(4)=2+8=10

hope it helps :)

6 0
3 years ago
The teacher spent 1/8 of the class period reviewing the answers to a worksheet. The class period was 1 1/2 hours length. How man
Anestetic [448]

Answer:

11 minutes and 15 seconds

Step-by-step explanation:

4 0
3 years ago
The CEO of a large electric utility claims that more than 75 percent of his customers are very satisfied with the service they r
vichka [17]

Answer:

z=\frac{0.77-0.75}{\sqrt{\frac{0.75(1-0.75)}{100}}}=0.462  

Now we can find the p value using the alternative hypothesis with this probability:

p_v =P(z>0.462)=0.322  

Since the p value is large enough, we have evidence to conclude that the true proportion for this case is NOT significanctly higher than 0.75 since we FAIL to reject the null hypothesis at any significance level lower than 30%

Step-by-step explanation:

Information provided

n=100 represent the random sample selected

\hat p=0.77 estimated proportion of students that are satisfied

is the value that we want to test

z would represent the statistic

p_v represent the p value

System of hypothesis

We want to verify if more than 75 percent of his customers are very satisfied with the service they receive, then the system of hypothesis is.:  

Null hypothesis:p\leq 0.75  

Alternative hypothesis:p > 0.75  

The statistic is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Replacing the info given we got:

z=\frac{0.77-0.75}{\sqrt{\frac{0.75(1-0.75)}{100}}}=0.462  

Now we can find the p value using the alternative hypothesis with this probability:

p_v =P(z>0.462)=0.322  

Since the p value is large enough we have evidence to conclude that the true proportion for this case is NOT significanctly higher than 0.75 since we FAIL to reject the null hypothesis at any significance level lower than 30%

4 0
3 years ago
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