3 years ago

PLEASE HELP !!! I’LL GIVE CROWN / COINS

Mathematics

1 answer:

Damm [24]3 years ago

3 0

Answer:

-81i

Step-by-step explanation:

(-3i)^3(-3)=-81i

You might be interested in

Plz help ASAP WILL MARK BRAINLIEST!!

AleksAgata [21]

Answer:

Step-by-step explanation:

It is B because every number, x, you plug in 5x-3, it is y.

6 0

3 years ago

Read 2 more answers

Complete the ordered pair so it a solution of 2x-5y=13

Ilya [14]

2 x - 5y = 13

2 × -1 - 5 × -3 = 13

Answer:
(-1, -3)

6 0

3 years ago

Which system of linear equations represents another pair of parallel lines?

vesna_86 [32]

Answer:

The answer is C. 3x+y=7, 6x+2y=10

Step-by-step explanation:

7 0

3 years ago

In an effort to estimate the mean of amount spent per customer for dinner at a major Lawrence restaurant, data were collected fo

larisa86 [58]

Answer:

The 99% confidence interval for the population mean is 22.96 to 26.64

Step-by-step explanation:

Consider the provided information,

A sample of 49 customers. Assume a population standard deviation of $5. If the sample mean is $24.80,

The confidence interval if 99%.

Thus, 1-α=0.99

α=0.01

Now we need to determine $z_{\frac{\alpha}{2}}=z_{0.005}$

Now by using z score table we find that $z_{\frac{\alpha}{2}}=2.58$

The boundaries of the confidence interval are:

$\mu-z_{\frac{\alpha}{2}}\times \frac{\sigma}{\sqrt{n} }\\24.80-2.58\times \frac{5}{\sqrt{49}}=22.96\\\mu+z_{\frac{\alpha}{2}}\times \frac{\sigma}{\sqrt{n} }\\24.80+2.58\times \frac{5}{\sqrt{49}}=26.64$

Hence, the 99% confidence interval for the population mean is 22.96 to 26.64

3 0

3 years ago

Tank a has a capacity of 9.5 galloons 6 1/3 gallons of the tanks water are poured out how many gallons of water are left in the

Alisiya [41]

$= 9 \frac{1}{2} - 6 \frac{1}{3} \\ = 9 \frac{3}{6} - 6 \frac{2}{6}$
$= 3 \frac{3 - 2}{6} \\ = 3 \frac{1}{6}$

3 1/6 gallons of water are left in the tank.

3 0

3 years ago

Read 2 more answers