All categories

3 years ago

HELP!!! 100 POINTS ANSWER FAST

Mathematics

2 answers:

anastassius [24]3 years ago

8 0

Answer:

(x^2-4)^2 = 9

Step-by-step explanation:

First, isolate the constant:

x^2-8x = -7

Then, since (a-b)^2 = a^2-2ab+b^2, you should add 16(4^2) to both sides:

x^2-8x+16 = 9

Now, we can rewrite the right-hand side as (a-b)^2:

(x-4)^2 = 9

Viktor [21]3 years ago

4 0

Answer:

(x - 4)^2 = 9

Step-by-step explanation:

Completing the square

x^2 - 8x + 7 = 0
x^2 - 2*4x + 16 - 9 = 0

(x^2 - 2*4x + 4^2) = 9

(x - 4)^2 = 9

The blanks are

- 4 and 9

You might be interested in

250 decreased by 35%

Sedbober [7]

Answer:250, percentage decreased by 35% (percent) of its value = 162.5

8 0

2 years ago

To be considered for pilot school, 12 students took a spatial reasoning test that resulted in this list of scores. find the perc

Brums [2.3K]

a. 17th percentile First, take the data and sort it in increasing order, getting: 98 101 117 121 122 127 130 137 138 143 145 152. The score of 117 is greater than 2 of the scores out of a total of 12 scores. So the percentile rank is 2/12 = 0.1666667 = 16.66667, or the 17th percentile. Therefore the answer is "a. 17th percentile"

7 0

3 years ago

The difference between x and half of y

Nataliya [291]

You could do y÷2-x to get x - half of y

7 0

3 years ago

Read 3 more answers

What's the number of electron for Fe?

crimeas [40]

Answer:

The answer 26, given that it’s atomic number is 26, and the atomic number is equal to the number of protons, which is equal to the number of electrons. Assuming that it has a neutral charge, the answer would be 26.

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

A store sells 4 main types of chocolate bars milk chocolate dark chocolate white chocolate and hazelnut chocolate the store empl

sergij07 [2.7K]

Hi there! The answer is A. 252

To find the percentage of the customers who preferred the milk chocolate bar we need to know two things:

First we need to know the total amount of customers, which is 50.
Second we need to know how many of these customers preferred the milk chocolate bar. This bar is preferred by 28 people.

Now we can fill in the following formula, in order to find our percentage:
$\% = \frac{part}{total} \times 100 \% = \frac{28}{50} \times 100 \% = 0.56 \times 100 \% = 56 \%$

Now we can multiply this percentage by the total amount of chocolate bars which will be bought (which is 450).
$56 \% \times 450 = 0.56 \times 450 = 252$

Hence, the answer is A. 252
~ Hope this helps you!

7 0

3 years ago