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3 years ago

Need help solving a practice question

Mathematics

1 answer:

liraira [26]3 years ago

3 0

Answer:

x=10

Step-by-step explanation:

Using Pythagoras theorem

H^2=O^2+A^2

26^2=24^2+A^2

676= 576+A^2

676-576= A^2

100= A^2

square root both sides

10= A

Therefore, x=10

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Type in your answer with no spaces and all lower case x. Factor x^2−100

____ [38]

Answer:

(x-10)(x+10)

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Converting from vertex to standard form plzz help ;(

Trava [24]

Answer:

x²-4x+7

-x²-6x-12

Step-by-step explanation:

1.) the first thing we do is expand the exponent (or mulitply (x-2)(x-2) the images below will show you how to do that

We get x²-4x+4 and then just need to add three

x²-4x+7

2.)

We do the same thing (expand the exponent) and get x²+6x+9

which means so far we have

-(x²+6x+9)-3

carry out the negative sign and subtract 3

-x²-6x-12

5 0

3 years ago

If you answer you get the brainlist idk the name

Tomtit [17]

Answer: y-intercept is 3

Explanation: x=0,75x+3
I hope that helped!

5 0

3 years ago

In a completely randomized design involving three treatments, the following information is provided: Treatment 1 Treatment 2 Tre

Sever21 [200]

Answer:

c. 7.25

Step-by-step explanation:

Given the following information from an experiment:

$\left\begin{array}{ccc}&$Sample Size&$Sample Mean \\$Treatment 1&5&4\\$Treatment 2&10&8\\$Treatment 3&5&9\end{array}\right$

Total Sample Size =5+10+5=20

Therefore, the overall mean

$=\dfrac{(5 \times 4)+ (10 \times 8) + (5 \times 9)}{20} \\=\dfrac{145}{20}\\\\=7.25$

8 0

4 years ago

27: a patio measures 12 feet by 14 feet. how many 8-inch-square paving stones are needed to pave a patio

Otrada [13]

The side of the patio that is 12 feet is equal to 144 inches. 144 inches divided by 8 inches for each stone tells you that you can fit 18 stones along this edge. The side of the patio that is 14 feet is equal to 168 inches. 168 divided by 8 is 21, telling you that 21 stones fit along this edge. By multiplying the number of stones on each edge, you can find the total number of stones needed. 21 times 18 equals 378 stones to pave the whole patio.

7 0

4 years ago

Need help solving a practice question ​

Need help solving a practice question