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3 years ago

What number is represented by their question mark if row 2 is LinkedIn row 1 ?

Mathematics

1 answer:

kenny6666 [7]3 years ago

5 0

Answer:

hi branliest me me bhi krunga

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Solve fro the Equation below:<br><br> 7+2(x-3)=-3(x+1)-4

tester [92]

7 + 2x - 6 = -3x - 3 - 4
2x + 1 = -3x - 3 - 4
2x + 1 = -3x - 7
2x + 1 + 3x = -7
5x + 1 = -7
5x = -7 - 1
5x = -8
x = -8/5.

4 0

3 years ago

Multiply and simplify. 3(x2 + 5)(x2 - 5)

Luba_88 [7]

Answer:

3 x^4 + -75

Step-by-step explanation:

Expand the following:

3 (x^2 + 5) (x^2 - 5)

(x^2 + 5) (x^2 - 5) = (x^2) (x^2) + (x^2) (-5) + (5) (x^2) + (5) (-5) = x^4 - 5 x^2 + 5 x^2 - 25 = x^4 - 25:

3 x^4 - 25

3 (x^4 - 25) = 3 x^4 + 3 (-25):

3 x^4 - 25×3

3 (-25) = -75:

Answer: 3 x^4 + -75

8 0

4 years ago

Read 2 more answers

If the length of one leg of a right triangle is 4 and the hypotenuse is √65 , what is the length of the other leg?

Ivanshal [37]

Answer:

Step-by-step explanation:

Using Pythagoras' identity on the right triangle

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides.

let x be the other leg, then

x² + 4² = ( $\sqrt{65}$ )²

x² + 16 = 65 ( subtract 16 from both sides )

x² = 49 ( take the square root of both sides )

x = $\sqrt{49}$ = 7

That is the other leg is 7 units

7 0

3 years ago

Read 2 more answers

Solve to find X !!! I have 6 minutes help

Levart [38]

Answer:
22
Explanation:
I-d-k a educated-guess

5 0

3 years ago

Read 2 more answers

a study of nickels showed that the standard deviation of the weight of nickels is 300 milligrams. A coin counter manufacture wis

cupoosta [38]

Using the z-distribution, a sample of 609 nickels has to be weighed.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The margin of error is:

$M = z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

For this problem, the parameters are:

$M = 20, \sigma = 300, z = 1.645$

We solve for n to find the sample size, then:

$M = z\frac{\sigma}{\sqrt{n}}$

$20 = 1.645\frac{300}{\sqrt{n}}$

$20\sqrt{n} = 1.645 \times 300$

$\sqrt{n} = 1.645 \times 15$

$(\sqrt{n})^2 = (1.645 \times 15)^2$

n = 608.9

Rounding up, a sample of 609 nickels has to be weighed.

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

6 0

2 years ago