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Vladimir79 [104]

3 years ago

8

How many square feet is 15' x 19'

1 answer:

Nuetrik [128]3 years ago

3 0

285 is square feet lf 15x19 baselcy 15 • 19 = 285

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Plzzz helppp with mathh

Masja [62]

Answer:

Try 1 1/6

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

a counter top is in the shape of a trapezoid. The lengths of the bases are 70 1/2 and 65 1/2 inches long. The area of the counte

nekit [7.7K]

For the trapezoid, the equation used to solve for the area is,
A = (0.5)(b₁ + b₂)(h)
where b₁ and b₂ are the measure of the bases and h is the height. Substituting the known values above,
1224 = (0.5)(70.5 + 65.5)(h)
h = 18
Thus, the height of the counter top is 18 inches.

7 0

3 years ago

A screening test for a disease shows a positive result in 91% of all cases when the disease is actually present and in 7% of all

Jobisdone [24]

Answer:

0.0713 = 7.13% probability that the result is positive.

Step-by-step explanation:

Probability of a positive test:

91% of 1/650(has the disease).

7% of 1 - 1/650 = 649/650(does not have the disease). So

$p = 0.91\frac{1}{650} + 0.07\frac{649}{650} = \frac{0.91 + 0.07*649}{650} = 0.0713$

0.0713 = 7.13% probability that the result is positive.

4 0

2 years ago

Please help!! See the attachment, please!

topjm [15]

Answer:

$946$

Step-by-step explanation:

we know that

The formula to find the sum is equal to

$S=(a1+an)n/2$

where

a1 is the first term

an is the last term

n is the number of terms

In this problem we have

$n=11$

$a1=(98-2(1))=96$

$an=(98-2(11))=76$

substitute the values in the formula

$S=(96+76)(11/2)=946$

5 0

3 years ago

Mike spent half of his allowance going to the movies he washed the family car and earned 9 dollars what is his weekly allowance

EleoNora [17]

$10 I believe. Hope it helped!

8 0

3 years ago