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1 year ago

Please help me im in a rush

Mathematics

1 answer:

Trava [24]1 year ago

3 0

Answer:

$\frac{x}{y} = \frac{10}{5} \\ = \frac{5}{1}$

1. •°• y is 5 times x

$\frac{x}{y} = \frac{30}{5} \\ = \frac{6}{1}$

2. •°• y is 6 times x

$\frac{x}{y} = \frac{56}{8} \\ = \frac{7}{1}$

3. •°• y is 7 times x

$\frac{x}{y} = \frac{88}{11} \\ = \frac{8}{1}$

4. •°• y is 8 times x

$2 \times \frac{7}{4}$

•°• y is 2 times x

$5 \times \frac{7}{4}$

•°• y is 5 times x

$8 \times \frac{7}{4}$

•°• y is 8 times x

$11 \times \frac{7}{4}$

•°• y is 11 times x

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Answer:

I believe she did 4.5 miles each day

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2 years ago

Find sin(7pie/4) using exact values

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2 years ago

Answer please lot's of points.

Svetlanka [38]

Answer:

t≈8.0927

Step-by-step explanation:

h(t) = -16t^2 + 128t +12

We want to find when h(t) is zero ( or when it hits the ground)

0 = -16t^2 + 128t +12

Completing the square

Subtract 12 from each side

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-12/-16 = -16/-16t^2 + 128/-16t

3/4 = t^2 -8t

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Then square it

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64/4 + 3/4= (t-4)^2

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Take the square root of each side

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±1/2sqrt(67) = (t-4)

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t≈-0.092676

t≈8.0927

The first is before the rocket is launched so the only valid answer is the second one

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3 years ago

Read 2 more answers

8-6: MathXL for School: Practice & Problem Solving

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Answer:

The Area of a circle is

$\pi {r}^{2}$

Therefore the Area of Circle A is

$\pi {8}^{2} \\ 201.06$

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$\pi {10}^{2} \\ 314.16$

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2 years ago

. The sandwich shop offers 8 different sandwiches. Jamey likes them all equally. He picks one randomly each day for lunch. Durin

Margarita [4]

Answer:

Step-by-step explanation:

From the given information:

A sandwich shop offers eight types of sandwiches, and Jamey likes all of them equally.

The probability that Jamey picks any one of them is 1/8

Suppose

X represents the number of times he chooses salami

Y represents the number of times he chooses falafel

Z represents the number of times he chooses veggie

Then X+Y+Z ≤ 5 and;

5-X-Y-Z represents the no. of time he chooses the remaining

8 - 3 = 5 sandwiches

However, the objective is to determine the P[X=x,Y=y,Z=z] such that 0≤x,y,z≤5

So, since he chooses x no. of salami sandwiches with probability (1/8)x

and y number of falafel with probability (1/8)y

and for z (1/8)z

Therefore, the remaining sandwiches are chosen with probability $\dfrac{5}{8} (5-x-y-z)$

So. these x days, y days and z days can be arranged within five days in

$= \dfrac{5!}{x!y!z!(5-x-y-z)!}$

Thus;

$P[X=x,Y=y,Z=z]= \dfrac{5!}{x!y!z!(5-x-y-z)} \times \dfrac{1}{8}x*\dfrac{1}{8}y* \dfrac{1}{8}z* \dfrac{5}{8}(5-x-y-z)$

since 0 ≤ x, y, z ≤ 5 and x + y + z ≤ 5.

The distribution is said to be Multinomial distribution.

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2 years ago