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3 years ago

What is the answer to this?

Mathematics

2 answers:

Mama L [17]3 years ago

8 0

Answer:

48!

A negative times a negative equals a positive then its just multiplication !

Step-by-step explanation:

mart [117]3 years ago

4 0

Answer:

Step-by-step explanation:

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A recent survey showed that among 100 randomly selected college seniors, 20 plan to attend graduate school and 80 do not. determ

Temka [501]

The confidence interval would be (0.122, 0.278).

We first find our z-score. We want a 95% confidence interval:

0.95/2 = 0.475

Looking this up in the z-table, (http://www.statisticshowto.com/tables/z-table/) we see the z-score is 1.96.

The formula we will use is:

$p \pm z\sqrt{\frac{p(1-p)}{n}}$

In this problem, p = 20/100 = 0.2, and n=100:

$0.2 \pm 1.96\sqrt{\frac{(0.2)(0.8)}{100}}
\\
\\0.2\pm 0.0784
\\
\\(0.2-0.0784, 0.2+0.0784)
\\
\\(0.1216,0.2784)$

8 0

4 years ago

This year Colton earned 70,000 frequent flyer miles from his travels this year’s amount is 10 times as many miles as he earned l

Whitepunk [10]

Answer:

Step-by-step explanation:

7000

3 0

3 years ago

Triangle ABC is an isosceles right triangle with the measure of angle A equal to 90 degrees. The length of segment AC is 6 cm. W

grigory [225]

Answer:

18 cm^2

Step-by-step explanation:

If AC is considered the base of the triangle, then AB will be the height. Since the triangle is isosceles, these measures are the same.

A = (1/2)bh = 1/2(6 cm)(6 cm) = 18 cm^2

The area of triangle ABC is 18 square centimeters.

4 0

3 years ago

The area of a square equals the square of a length of the side of the square. The perimeter of a square equals the sum of the le

Bad White [126]

Answer:

Step-by-step explanation:

Let us take side of first square be a

and other square side be L

It is given area of first square is equal to length of other

i.e. $a^2=L$

also

Sum of area of two square is 65

$L^2+a^2=65$

i.e.

$a^4+a^2=65----1$

also Difference of area of two square is

$L^2-a^2=33$

$a^2-a^2=33-----2$

adding 1 and 2 we get

$2a^4=98$

$a^4=49$

$a^2=7$

i.e. $L=7$

and $a=\sqrt{7}$

Perimeter of first Square

$P_1=4a=4\sqrt{7}$

$P_2=4 L=4\times 7$

Sum of Perimeter

$=4(\sqrt{7}+7) units$

6 0

3 years ago

How would you graph the solution set of x + 4 > -9?

Elodia [21]

X+4>-9
x>-13

It's an open circle because it doesn't include the value -13 (the solution set is greater than) and it's shaded to the right because the right side has values greater than -13.

8 0

3 years ago

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