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Vera_Pavlovna [14]

2 years ago

6

A trapezoid has one base measuring 12', and the other measuring 13'8". What is the area in square feet if the height of the trap

ezoid is 9'4"?
(Remember for trapezoids A= (b1 + b2)/2 x h

1 answer:

Leona [35]2 years ago

8 0

Answer:

Step-by-step explanation:

buzhou一=12212+13。8.12+13.8=25.8 25.8x9.4=?242.52242.522

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Find the distance between the following points.<br>a) (2,2) and (-3,1)<br><br>

defon

Answer:

the distance between (2,2) and (-3,1) is $\sqrt{26}$ , which is about 5.10.

Step-by-step explanation:

on a graph it shows that:

rise/run = 1/5

8 0

3 years ago

Tammaso's family used 24.5 gallons of gas to drive 548.8 miles. How many miles did they drive for each gallon of gas?

djverab [1.8K]

548.8 divided by 24.5=22.4

8 0

3 years ago

n a raffle, Scott buys 10 tickets and his friend Tom buys 6 tickets. If there are 80 tickets sold, what is the probability that

kipiarov [429]

The Answer Is 1/5 fam

6 0

3 years ago

Read 2 more answers

Solve for x. 3^x−1=9^x+2 <br> Enter your answer in the box.

slava [35]

Answer:

-5 =x

Step-by-step explanation:

3^(x-1) = 9^(x+2)

Replace 9 with 3^2

3^(x-1) = 3^2^(x+2)

We know that a power to a power means the powers are multiplied

a^b^c = a^(b*c)

3^(x-1) = 3^(2x+2)

When the bases are the same, the powers have to be the same

x-1 = 2x+4

Subtract x from each side

x-x-1 =2x-x+4

-1 =x+4

Subtract 4 from each side

-1-4 =x+4-4

-1-4 = x

-5 =x

4 0

3 years ago

Show all your work. Indicate clearly the methods you use, because you will be scored on the correctness of your methods as well

laiz [17]

Answer:

The value is $P(A) = 0.133617$

Step-by-step explanation:

From the question we are told that

The mean is $\mu = 7.5$

The standard deviation is $\sigma = 0.2$

The safest water level is between 7.2 and 7.8

Generally the probability that the selected pool has a pH level that is not considered safe is mathematically represented as

$P(A) = 1 - P(7.2 \le X \le 7.8 )$

Here

$P(7.2 < X < 7.8 ) = P(\frac{ 7.2 - \mu }{\sigma } < \frac{X - \mu }{ \sigma }$

Generally $\frac{X - \mu }{ \sigma } = Z (The \ standardized \ value \ of X )$

So

$P(7.2 < X < 7.8 ) = P(\frac{ 7.2 - 7.5 }{0.2 } < Z$

$P(7.2 < X < 7.8 ) = P(-1.5 < Z$

=> $P(7.2 < X < 7.8 ) = P(Z < 1.5) - P( Z < - 1.5)$

From the z-table the probability of (Z < -1.5) and ( Z <1.5) are

$P(Z < 1.5) = 0.93319$

and

$P(Z < -1.5) = 0.066807$

So

$P(7.2 < X < 7.8 ) =0.93319 - 0.066807$

$P(7.2 < X < 7.8 ) =0.0866383$

So

$P(A) = 1 - 0.0866383$

=> $P(A) = 0.133617$

5 0

3 years ago