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mina [271]
2 years ago
10

Jill can make a key chain in 1 minute(s) 48 seconds. At this rate, which is closest to the amount of time she will need to make

5 key chains?
2 minutes?
1 minutes?
10 minutes?
or 5 minutes?
Mathematics
1 answer:
mezya [45]2 years ago
7 0

Answer:

10 minutes

Step-by-step explanation:

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A pumping station pumps 340 gallons of water in 8 minutes.
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Well, 340/8=42.5
So you're pumping 42.5 gallons per minute.
42.5×20=850
It pumps 850 gallons in 20 minutes.
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3 years ago
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What is 9z + 2z -8 equivalent to after being simplified?
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11z-8
Combine like terms.
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Write in slope-intercept form an equation of the line that passes through the given points. (2,4),(5,13)
antiseptic1488 [7]

Answer:

y = 3x-2

Step-by-step explanation:

We can find the slope using the equation for slope

m = (y2-y1)/(x2-x1)

    = (13-4)/(5-2)

    = 9/3

     = 3

We know the slope and a point, so we can use point slope form to make an equation

y-y1 = m(x-x1)

y-4 = 3(x-2)

Distribute

y-4 = 3x-6

Add 4 to each side

y-4+4 = 3x-6+4

y = 3x-2

This is in slope intercept form (y= mx+b)

7 0
3 years ago
Pete is a politician. He claims that 32% of the households in his district have total household incomes below the poverty level.
victus00 [196]

Answer:

z=\frac{0.3867 -0.32}{\sqrt{\frac{0.32(1-0.32)}{225}}}=2.145  

For a bilateral test the p value would be:  

p_v =2*P(z>2.145)=0.0320  

Step-by-step explanation:

Information given

n=225 represent the sample selected

X=87 represent the households with incomes below the poverty level

\hat p=\frac{87}{225}=0.3867 estimated proportion of households with incomes below the poverty level

p_o=0.32 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 check if the true proportion is equal to 0.32 or not.:  

Null hypothesis:p=0.32  

Alternative hypothesis:p \neq 0.32  

The statistic is given bY:

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

Replacing we got:

z=\frac{0.3867 -0.32}{\sqrt{\frac{0.32(1-0.32)}{225}}}=2.145  

For a bilateral test the p value would be:  

p_v =2*P(z>2.145)=0.0320  

4 0
3 years ago
Find the area and perimeter
vitfil [10]

Answer:

area = 62ft

Step-by-step explanation:

7 0
2 years ago
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