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Yuliya22 [10]
3 years ago
9

2. Point B is located at (-4,5). The midpoint of line segment BD is point c(-1,0). What are the coordinates

Mathematics
1 answer:
andreev551 [17]3 years ago
8 0

Answer:D is 0,-5

Step-by-step explanation:

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There are 480 dishes that need to be rinsed. Juan can rinse them in 80 minutes by himself. It will his friend Kevin 120 minutes
andreev551 [17]

Answer:

48 minutes.

Step-by-step explanation:

Number of dishes rinsed by Juan in <em>1</em><em> </em><em>m</em><em>i</em><em>n</em><em>u</em><em>t</em><em>e</em><em> </em>

= 480/80

= 6

Number of dishes rinsed by Kevin in <em>1</em><em> </em><em>m</em><em>i</em><em>n</em><em>u</em><em>t</em><em>e</em>

= 480/120

= 4

Number of dishes rinsed by Juan and Kevin in <em>1</em><em> </em><em>m</em><em>i</em><em>n</em><em>u</em><em>t</em><em>e</em>

= 6 + 4

= 10

Hence, time taken by Juan and Kevin to rinse the dishes

= 480/10

= <u>4</u><u>8</u><u> </u><u>m</u><u>i</u><u>n</u><u>u</u><u>t</u><u>e</u><u>s</u>.

Hence It will take <u>4</u><u>8</u><u> </u><u>m</u><u>i</u><u>n</u><u>u</u><u>t</u><u>e</u><u>s</u> for them to rinse the dishes.

5 0
3 years ago
A recent drug survey showed an increase in the use of drugs and alcohol among local high school seniors as compared to the natio
murzikaleks [220]

Answer:

There is evidence to claim that the proportion of drug and alcohol use is higher locally than nationally.

Step-by-step explanation:

Given that a recent drug survey showed an increase in the use of drugs and alcohol among local high school seniors as compared to the national percent.

Let p1 be the proportion of local seniors and p2 national seniors.

H_0: p_1=p_2\\H_a: p_1 >p_2

(right tailed test at 5% significance level)

Group I II  

Success 69 60 129

Total 100 100 200

p 0.69 0.6 0.645

q 0.31 0.4 0.355

se 0.046249324 0.048989795 0.033836002

p diff 0.09  

Std error 0.03384  

Z 2.659574468 0  

p 0.00391  

we find that p value is 0.00391 <0.05

Hence we reject null hypothesis

There is evidence to claim that the proportion of drug and alcohol use is higher locally than nationally.

5 0
3 years ago
What would the height need to be for this curve to be a
antiseptic1488 [7]

Answer: A

Step-by-step explanation:

The total area would have to be 1, so (1/2)(5)(height)=1

2.5height = 1

height = 1/2.5 = 2/10 = 1/5

6 0
2 years ago
Mark has a piece of wood that is 11 1/4 ft long. He cuts the piece of wood into as many 2 1/2 -ft pieces as he can. How long is
s344n2d4d5 [400]

Answer: 9

Step-by-step explanation:

11 2/4 - 2 1/2

46/4 - 5/2

23/2 - 5/2

=18/2= 9

5 0
2 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=2%284x%20%2B%205%29%20%3E%207x%20%2B%2020" id="TexFormula1" title="2(4x + 5) &gt; 7x + 20" alt
astraxan [27]

First, distribute 2 to all terms within the parenthesis

2(4x + 5) = 8x + 10

8x + 10 > 7x + 20

Isolate the x. Treat the > like a equal sign. Subtract 7x and 10 from both sides

8x (-7x) + 10 (-10) > 7x (-7x) + 20 (-10)

Simplify

8x - 7x > 20 - 10

x > 10

x > 10 is your answer

hope this helps

4 0
2 years ago
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