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2 years ago

Please help. Fill in the blanks with my rule

Mathematics

1 answer:

Aleksandr [31]2 years ago

5 0

Answer:

2 - 9

3 - 16

4 - 25.

Step-by-step explanation:

I think you want this:

2 - (2+1)(2+1)

3 - (3 + 1)(3+1)

4 - (4+1)(4 + 1)

You substitute 2, 3 and 4 into x - (x+1)(x+1) and work them out.

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The pool at the park is 18 feet wide how many yardsticks would it take to measure the width of the pool

sattari [20]

6 because 18 divided by 3 equals 6

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3 years ago

Two distinct solid fuel propellants, type A and type B, are being considered for a space program activity. Burning rates of the

Finger [1]

Answer:

C.I. = (2.297, 11.703)

Step-by-step explanation:

The t-statistic for difference of mean is given by,

$t=\frac{\bar{x_{1}}-\bar{x_{2}}}{\sqrt{\frac{s_{1}^{2}}{n_{1}}+\frac{s_{2}^{2}}{n_{2}}}}$

Here, $\bar{x_{1}}$ = 84

$\bar{x_{2}}$ = 7

s₁ = 4

n₁ = 12

s₂ = 6

n₂ = 18

Substituting all value in formula,

We get, t = -3.541 at 28 degree of freedom.

Using this formula, we get, t = 1.5342

Therefore, based on the data provided, the 99% confidence interval for the difference between the population means $\bar{x_{1}}-\bar{x_{2}}$ is: 2.297 < $\bar{x_{1}}-\bar{x_{2}}$ < 11.703

which indicates that we are 99% confident that the true difference between population means is contained by the interval (2.297, 11.703)

6 0

3 years ago

Jenna's pool is 22 feet long, 12 feet across and 6 feet deep.How many square feet of plaster will it take to cover it? (Be caref

photoshop1234 [79]

Answer:

264sq feet

Step-by-step explanation:

because you only need to cover the top you multiply 22 x 12 to get 264 sq feet

7 0

2 years ago

Select all the sentences that correctly identify the components of the experiment.

lesya [120]

Answer:

A,D,E,F

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

find the equation of the straight line passing through the point (0,-1) which is perpendicular to the line y=-3/4x-3

barxatty [35]

Answer:

y = $\frac{4}{3}$ x - 1

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y-intercept )

y = - $\frac{3}{4}$ x - 3 is in this form

with slope m = - $\frac{3}{4}$

the slope of a perpendicular line is the negative reciprocal of m, hence

$m_{perpendicular}$ = $\frac{4}{3}$

(0 , - 1 ) is the y-intercept ⇒ c = - 1

y = $\frac{4}{3}$ x - 1 ← equation of perpendicular line

4 0

3 years ago