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3 years ago

HELP QUICK ILL GIVE THE BRAINLIEST!

Mathematics

1 answer:

PtichkaEL [24]3 years ago

5 0

Answer:

192x-4= -768

Step-by-step explanation:

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What is the margin of error for a yes/no survey of 200 people with a proportion of 65% who answered \"yes\"?. A. ±3.37%. B. ±5.0

azamat

$\sqrt{(p*q)/n}$

where p is the number of positive outcomes (yes) and q is the number of negative outcomes (no).

$\sqrt{(0.65*(1-0.65))/200}$ = 0.0337 or 3.37%

answer is A.

6 0

3 years ago

A store charges a restocking fee for any returned item based upon the item price. An item priced at $200 has a fee of $12. An it

Vesna [10]

Divide the restocking fee by the price of the item:

12/200 = 0.06

9/150 = 0.06

Multiply by 100 to get the percent:

0.06 x 100 = 6%

Answer: 6%

3 0

2 years ago

The price of a game thats been discounted 18% off its price(x)?

vlada-n [284]

0.0018 is what is was in a decimail but i dont know what the quiestion is
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4 0

3 years ago

Larry makes sandwiches for lunch everyday. He can make 6 sandwiches with every 3 tomatoes he buys. If he bought 6 tomatoes, how

malfutka [58]

Answer:

12 sandwiches

Step-by-step explanation:

Make a proportion

He can make 6 sandwiches with 3 tomatoes, and x sandwiches with 6 tomatoes

6/3=x/6

Multiply both sides by 6 to isolate the variable, x

6*6/3=x/6*6

12=x

So, with 6 tomatoes, he can make 12 sandwiches

4 0

3 years ago

Read 2 more answers

Mary wants to hang a mirror in her room. The mirror and frame must have an area of 7 square feet. The mirror is 2 feet wide and

Umnica [9.8K]

Answer:

The quadratic equation used to determine the thickness of frame is $\left(3+2x\right)\times \left(2+2x\right)=7$

Step-by-step explanation:

Refer to the attachment for the diagram.

Consider EFGH as the the frame and ABCD as the mirror which is to be hanged.

Let me the "x" be the thickness of the frame as shown in diagram.

Given that, BC = 3 ft and DC = 2 ft which is the dimensions of the mirror.

Now to calculate the length and width of the frame consider following calculation,

Width of frame HG = x + DC + x

Width of frame HG = x + 2 + x

Width of frame HG = 2 + 2x

2x is the addition of the thickness which is present on both side of mirror

Length of frame FG = x + BC + x

Length of frame FG = x + 3 + x

Length of frame FG = 3 + 2x

Since it is an rectangular frame, so using the formula for area of rectangle

$Area\:of\:rectangle = length \times width$

Given that area of frame is $7\:ft^{2}$

Substituting the value,

$7 = \left(3+2x\right)\times \left(2+2x\right)$

Therefore, the quadratic equation used to determine the thickness of frame is $\left(3+2x\right)\times \left(2+2x\right)=7$

8 0

3 years ago