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Usimov [2.4K]
3 years ago
14

Which expressions are equivalent to -6Z+(-5.5) + 2.5z + 5y - 3.5?

Mathematics
1 answer:
inn [45]3 years ago
4 0

Answer: E

Step-by-step explanation:

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What is the kinetic energy of a 1500 kg object moving at a velocity of 10 m/s?
DiKsa [7]

Answer: The Kinetic Energy Formula is: KE = mass x velocity^2 / 2

Plug in the correct numbers into the variables

KE = 1500 kg x 10 m/s ^2 / 2

Square the 10 m/s

KE = 1500 kg x 100 m/s / 2

Multiply

KE = 150,000 / 2

Divide

KE = 75,000 Newton-meters or joules

Step-by-step explanation:

7 0
2 years ago
Exponential growth and decay functions are written in standard form as
strojnjashka [21]

Answer:

Step-by-step explanation:

te falta el factor terminal sige con las letras delabesedario

5 0
3 years ago
If the diagonal path is 750 feet long and the width of the park is 450 feet, what is the length, in the feet, of the park?
disa [49]

Answer:

The length is 600 ft

Step-by-step explanation:

We can use the Pythagorean theorem since we know the diagonal which is the hypotenuse and the width

a^2 + b^2 = c^2

450 ^2 + b^2 = 750^2

b^2 = 750^2 - 450^2

b^2 =562500-202500

b^2 =360000

Taking the square root of each side

sqrt(b^2) = sqrt(360000)

b =600

4 0
3 years ago
A quality control engineer at a potato chip company tests the bag filling machine by weighing bags of potato chips. Not every ba
jekas [21]

Answer:

The test statistic is z = 1.865.

Step-by-step explanation:

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

H0: p = 0.11

This means that 0.11 is tested at the null hypothesis, and so:

\mu = 0.11

\sigma = \sqrt{0.11*0.89} = 0.3129

The engineer weighs 94 bags and finds that 16 of them are over-filled.

This means that:

n = 94, X = \frac{16}{94} = 0.1702

What is the test statistic?

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{0.1702 - 0.11}{\frac{0.3129}{\sqrt{94}}}

z = 1.865

The test statistic is z = 1.865.

6 0
3 years ago
Given f(x)=x^2-4x+5, what's the value when f(2)
Reil [10]

If you were to replace the x's with 2, your equation would turn into:

(2)^2-4(2)+5

From there, you'd just solve.

4-8+5=1

Your answer would be 1.

7 0
3 years ago
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