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3 years ago

7

Part B: If a cross section of the rectangular pyramid is cut perpendicular to the base, passing through the top vertex, what wou

ld be the shape of the resulting cross section? Explain your answer.

1 answer:

Katyanochek1 [597]3 years ago

6 0

Answer:

A triangle.

Step-by-step explanation:

The plane would pass through opposite sloping faces of the pyramid and through the base; the shape formed is a triangle.

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Solve the equation -9x+1=-x+17

Step2247 [10]

Answer:

x=-2

Step-by-step explanation:

-9x+1=-x+17

Add 9x on both sides:

1=8x+17

Subtract 17 on both sides:

-16=8x

Divide both sides by 8:

-2=x

Check x=-2!

-9x+1=-x+17 with x=-2

-9(-2)+1=-(-2)+17

18+1=2+17

19=19

19=19 is a true equation so x=-2 is correct.

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2 years ago

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Help me now ASAP<br> For what value of n are (1/9)^3 and 9^n equal?

RideAnS [48]

Step-by-step explanation:

$( \frac{1}{ {9}^{3} } ) = {9}^{n}$

${9}^{ - 3} = {9}^{n}$

$n = - 3$

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3 years ago

A softball pitcher has a 0.675 probability of throwing a strike for each pitch and a 0.325 probability of throwing a ball. If th

Dafna11 [192]

Answer:

The probability that exactly 19 of them are strikes is 0.1504

Step-by-step explanation:

The binomial probability parameters given are;

The probability that the pitcher throwing a strike, p = 0.675

The probability that the pitcher throwing a ball. q = 0.325

The binomial probability is given as follows;

$p(x) = _{n}C_{x}\cdot p^{x}\cdot q^{1-x}$

Where:

x = Required probability

Therefore, the probability that the pitcher throws 19 strikes out of 29 pitches is found as follows;

The probability that exactly 19 of them are strikes is given as follows;

$\binom{29}{19}(0.675)^{19}0.325^{10} = \frac{29!}{19!\times 10!}\times (0.675)^{19}\times 0.325^{10} = 0.1504$

Hence the probability that exactly 19 of them are strikes = 0.1504

8 0

3 years ago

Estimate a 25% tip on a bill of $68.28 by first rounding the bill amount to the nearest ten dollars.

BARSIC [14]

Answer:

A 25% tip on a bill of $68.28 rounded to $70 would be <u>$17.50</u>

STEPS

<em>Step 1: </em>Round $68.28 to $70.00

<em>Step 2:</em> convert 25% to a decimal-------- .25

<em>Step 3:</em> multipy .25 x 70= 17.5

Let me know if you need any other help!!

6 0

3 years ago

Please help me?i don’t want to fail

Kobotan [32]

Answer:

8.

<u>9y-3y=6</u>

-4x-(-5x)=1

the slope is 6

9.

you start at the 0 axis and go up 3 on the y.Once you did that you want to go up 2 on the y axis then 3 to the right on the x axis,then go up 2 then 3 to the right.

Step-by-step explanation:

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2 years ago