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2 years ago

Which alternative is the NEGATIVE reciprocal of -4?* A. - 4 B. -1/4 C. 1/4 D.4

1 answer:

kramer2 years ago

4 0

A. It’s asking for the negative, the reciprocal, is always the same number, just sometimes positive or negative, it would be A since it’s asking for the NEGATIVE reciprocal! Hope this helps.

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PtichkaEL [24]

Answer:

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Step-by-step explanation:

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3 years ago

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The perimeter of a rectangle is 62m. find the length of its sides if it is known that the area of the rectangle is 1980000 cm².

ss7ja [257]

The perimeter of a rectangle is 62m. find the length of its sides if it is known that the area of the rectangle is 1980000 cm².

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3 years ago

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One integer is 5 less than another and their product is 84. Find the integers.

andrezito [222]

The first integer is going to be x and the second one is going to be y.

We now turn the clues into equations:

x = y - 5

xy = 84

The substitution method:

(y - 5)y = 84

y^2 - 5y - 84 = 0

(y+7)(y-12) = 0

y = -7, 12.

If y = -7, then x = -12.

If y = 12, then x = 7

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3 years ago

Mr wells drew a plan for a rectangle dog run three of the vertices are (2 1/3, 7 1/2), (12, 7 1/2), and (12, 1) what are the coo

melisa1 [442]

Answer:

Step-by-step explanation:

let 4th fourth vertex be D (x,y)

A(2 1/3,7 1/2),B(12, 7 1/2),C(12,1)

or A(7/3,15/2),B(12,15/2),C(12,1)

Mid-point of diagonal AC is P((7/3+12)/2,(15/2+1))

Mid -point of diagonal BD is P((12+x)/2,(15/2+y)/2)

(Because mid -point of diagonal is same.)

(12+x)/2=(7/3+12)/2

12+x=7/3+12

x=7/3

(15/2+1)/2=(15/2+y)/2

15/2+1=15/2+y

y=1

so fourth vertex is (7/3,1)

8 0

3 years ago

Hermione thinks she has discovered a protection spell that will reduce the pain of the Cruciatus curse. She believes that a samp

Mila [183]

Answer:

There will be no difference in pain ratings from people protected by her spell and people who aren't protected by her spell.

Step-by-step explanation:

The claim in this scenario is the alternative hypothesis, which is what we wish to test ; the alternative hypothesis is thus ; people who are protected by spell will rate their pain as a result of cruciatus curse as less severe than the average person who does not use her protection spell ;

As we know, the null hypothesis is the opposite of the alternative hypothesis and the initial truth, which is ;

The average pain felt by both the user of the pain protections spell and those who do not feel the same amount of pain.

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3 years ago