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3 years ago

HELP When x=7 7+7(x-3)²

Mathematics

2 answers:

Gelneren [198K]3 years ago

7 0

Answer: 119

$7+7(x-3)^{2}$

$7+7(7-3)^{2}$

$7+7(4)^{2}$

$7+7(16)$

$7+112$

=119

inna [77]3 years ago

4 0

Answer:

it should be 119

Step-by-step explanation:

(7-3) = 4

4^2 = 16

16 x 7 = 112

112 + 7 = 119

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Distribute 9(3x^3-2)

Vladimir79 [104]

First you need to distribute the 9.

So 9 times 3 and 9 times 2

The Algebraic should look like now: (27^3x-18)

So the final answer is: $27x^{3} - 18$

You cannot simplify it anymore because there are <u>no like terms left.</u>

4 0

3 years ago

Read 2 more answers

Pls pls pls helpp I will give u brainlyiest

Fantom [35]

Answer:

Step-by-step explanation:

The circumference formula is

$2\pi r$

where r is the radius

The circumference of the NAVY Pier Wheel is 439.6

We know the circumference so we solve for r.

$2\pi r=439.6$

$r=69.6=70$

So our radius is 70.

The circumference of Navy is 56% of the original wheel. So we can just set up a proportion.

$\frac{56}{100} =\frac{439.6}{y}$ to find the new circumference.

We simplify that and we get y=485

Know we find the radius,

$2\pi r=785$

r= $\frac{785}{2\pi } =125$

So our radius is 125.

3. The first Ferris wheel circumference is 785. We divide 9 by that to find the wheel movement per minute.

785/9= 87.2 feet per minute

7 0

3 years ago

Suppose you are given the coordinates of the vertices of a polygon. What steps could you take to solve a problem involving the p

Vikki [24]

First find the length of all the sides.
Then divide that polygon (if it has more than 4 sides or an irregular quadrilateral) into triangles.
Find the area of triangles so formed by Heron's formula.
Than sum the area of all the triangles. The sum will be the area of the polygon.

3 0

4 years ago

In a data set with a normal distribution the main is 59 and standard deviation is three about what percent of the data live betw

jolli1 [7]

Answer:

81.9%

Step-by-step explanation:

In a data set with a normal distribution the mean is 59 and standard deviation is three about what percent of the data live between 53 and 62

Using z score formula

z = (x-μ)/σ, where

x is the raw score,

μ is the population mean = 59

and σ is the population standard deviation = 3

For x = 53

z = 53 - 59/3

= -2

P-value from Z-Table:

P(x = 53) = 0.02275

For x = 62

z = 62 - 59/3

= 1

P-value from Z-Table:

P(x = 62) = 0.84134

Hence, the probability of the data live between 53 and 62 is

0.84134 - 0.02275

0.81859

Converting to Percentage.= 0.81859

× 100 = 81.859%

Approximately = 81.9%

6 0

3 years ago

PLEASE HELP Michaels home is 12 feet below sea level in his mothers home is 12 feet above sea level Michael says their homes are

nexus9112 [7]

Answer:

Yes, he is correct

Step-by-step explanation:

Represent Michael's home with M and his mother's with H

So, we have:

$M = 12\ ft (below)$

$H = 12\ ft (above)$

Required

Is Michael correct?

First, we get the numeric values of the given parameters.

Below sea level means negative:

So:

$M = 12\ ft (below)$ will be rewritten as:

$M = -12$

Above sea level means positive:

So:

$H = 12\ ft (above)$ will be rewritten as:

$H = 12$

Two numbers $A\ and\ B$ are said to be opposite if $A + B=0$

For Michael to be correct:

$M + H = 0$

Substitute values for M and H

$-12 + 12 = 0$

$0 = 0$

<em>Hence, Michael is correct</em>

3 0

3 years ago