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4 years ago

Anyone know how to do this?

Mathematics

1 answer:

Ksivusya [100]4 years ago

6 0

Answer:

$x=\sqrt{7}$ which is 2.646

y=49

it shouldn't be mp soluction, but you can say it as No real soluction because you can't sqrt an negitive number

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What is the mean of the data set shown 68 70 72 74 76 78 80 82 84 86 88 90 92

Elden [556K]

The mean is the average. Add all the numbers together, then divide by the quantity of numbers in the data set.

1040 / 13 = 80

The mean is 80

4 0

3 years ago

There are 4 sports stores,9 clothing stores and 6 jewelry stores ina shopping crnter which ratio compares the number of sports s

Pani-rosa [81]

The ratio is 2 : 9

Step-by-step explanation:

Given:

The number of sports store = 4

The number of clothing store = 9

The number of jewellery stores = 5

To Find :

The ratio of number of sports stores to the total number of stores

Solution:

The ratio of number of sports stores to the total number of stores

= $\frac{\text{number of sports store}}{\text{ Total number of stores}}$

The total number of stores = number of sports store + number of clothing store + number of jewellery store

The total number of stores = 4 + 9 + 5

The total number of stores = 18

Now the ratio is

= $\frac{4}{18}$ or 4 : 8

The ratio after reduction is

= $\frac{2}{9}$ or 2 : 9 or 2 to 9

7 0

4 years ago

In 2010, the population of Atlanta, Georgia was 419,979 and the population density was 3153 people per mi². What was Atlanta's l

AVprozaik [17]

419979/3153=133.19981 that rounded is 133.2

419979/133.2=3152.9955 that rounded is 3153

5 0

4 years ago

Read 2 more answers

Is the following expression true or false? Show your work.

SOVA2 [1]

Answer:

The expression is true.

Explanation:

$(x^2+8x+16)(x^2-8x+16)=(x+4)^2(x-4)^2=((x+4)(x-4))^2$

We know that (a +b)(a-b) = a²-b²

So we have ,

$((x+4)(x-4))^2=(x^2-4^2)^2=(x^2-16)^2$

Which is Right Hand Side given.

So, the expression is true.

7 0

3 years ago

For a quadratic function ƒ(x)=ax2+bx+c, ƒ(−1)<1, ƒ(1)>−1, and ƒ(3)<−4. What could be the sign of a?

denis23 [38]

Answer:

"a" must be negative

Step-by-step explanation:

The slope between points (-1, 1) and (1, -1) is a minimum of (-1-1)/(1-(-1)) = -1.

The slope between points (1, -1 and (3, -4) is a maximum of (-4-(-1))/(3-1) = -3/2.

Thus, as x increases, the slope is decreasing. In order for that to be the case, the value of <em>a</em> must satisfy a < 0.

4 0

4 years ago