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4 years ago

What is the solution to -1-7?

Mathematics

2 answers:

zubka84 [21]4 years ago

8 0

Answer:

-8

Step-by-step explanation:

-1-7 = -8

murzikaleks [220]4 years ago

5 0

-8.

-1 - 7 would be adding because when subtracting negatives you always change the sign and a trick i know is that negatives are referred to as “hate” and positives are referred to as “love”. therefore if you do a negative minus a positive you will get a negative. so the answer here is -8.

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What is the square root of 9 over 25

GenaCL600 [577]

Sqrt(9)÷25= 0.12 I hope this helps!

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4 years ago

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The distance from the ground of a person riding on a Ferris wheel can be modeled by the equation d equals 20 times the sine of t

kodGreya [7K]

We have the function d, representing the distance from the ground of a person riding on a Ferris wheel:

$d(t)=20\sin (\frac{\pi}{30}t)+10$

If we consider the position of the person at t = 0, which is:

$d(0)=20\sin (\frac{\pi}{30}\cdot0)+10=20\cdot0+10=10$

This position, for t = 0, will be the same position as when the argument of the sine function is equal to 2π, which is equivalent to one cycle of the wheel. Then, we can find the value of t:

$\begin{gathered} \sin (\frac{\pi}{30}t)=\sin (2\pi) \\ \frac{\pi}{30}\cdot t=2\pi \\ t=2\pi\cdot\frac{30}{\pi} \\ t=60 \end{gathered}$

Then, the wheel will repeat its position after t = 60 seconds.

Answer: 60 seconds.

7 0

2 years ago

Please help thank you.

posledela

Hello!

You can separate the shape into two rectangular prisms

prism 1 - 9, 2 ,4
prism 2 - 4, 2, 8

Since the frosting is on the outside of the cake you have to find the surface area

To find the surface area you use the equation

2(wl + hl + hw)

Put in the values you know

2(9 * 2 + 4 * 2 + 9 * 4)

multiply

2(18 + 8 + 36)

Add

2(62) = 124

Now you find the surface area of the second prism

2(4 * 2 + 2 * 8 + 4 * 8)

Multiply

2( 8 + 16 + 32)

Add

2(56) = 112

Now add the two surface areas to get the surface area of the whole shape

112 + 124 = 236

The answer is 236in squared

Hope this helps!

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3 years ago

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Acceptance Sampling Random sampling from a large lot of manufactured items yields a number of defective items X with an approxim

AfilCa [17]

Answer:

Step-by-step explanation

Let β = np, n= 5 and p= 0, 0.1, 0.3, 0.5, 0.9 and 1

x > a, a= 0

The probability of an item inspected, P(x) = β∧x*e∧-β/x!

a) For x= 1: β = 5 X 0 = 0

P(x=1) = 0

For x = 2: β = 5 X 0.1 = 0.5

P(x=2) = 0.5²*e∧-0.5/2!

For x = 3: β = 5 X 0.3 = 1.5

P(x=3) = 1.5³*e∧-1.5/3!

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P(x=4) = 2.5∧4*e∧-2.5/4!

For x = 5: β = 5 X 0.9 = 4.5

P(x=5) = 4.5∧5*e∧-4.5/5!

For x= 6: β = 5 X 1 = 5

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b) For plan1, x = 1: β + 10 X 0.1 = 1

P(x=1) = e∧-1/1! = 1/e = 1/2.718 = 0.368

For plan2, x=20: β = 100 X 0.1 = 10

P(x=20) = 10∧20*e∧-10/20!

Plan 2 is preferable because the probability of success is very small and the number of trial is comparatively large, hence, the poisson distribution will be suitable probability model.

d) Plan 1 is prefered instead, because the probability of success is larger and more profit is made.

e) Plen 2 is prefered, because it will be cheaper to afford.

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3 years ago

What is a function? *

Lera25 [3.4K]

Answer:

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Step-by-step explanation:

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