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3 years ago

3 x 5to the power of 2 so 5’2

2 answers:

8 0

I think the answer is 30.

I think this because when you multiply 3x5 you get 15 well, it says power of 2 so you would multiply by 2 and that’s how you get your answer. I also had to do something like this.

Please mark branliest.

Stella [2.4K]3 years ago

8 0

3 times 5 is 15 and 15 to the power of 2 is 225 because you would do 15 times 15 so the answer is 225.

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What point represents 2 3/4 on the number line

baherus [9]

This point 2 3/4 on the number line

8 0

1 year ago

What type of property is 3x•2y=3•2•x•y

vlada-n [284]

This is the commutative property because you have 3*x*2*y and you turn the x and the 2 around. The commutative property states that a * b = b * a and therefore x*2 = 2*x.

6 0

3 years ago

Help asap plssssssssss

Kryger [21]

Step-by-step explanation:

distance AB is (using Pythagoras with the coordinate differences between both points as sides and the distance as Hypotenuse = baseline of the triangle, the side opposite of the 90 degree angle):

distance² = (5 - -10)² + (7-2)² = 15² + 5² = 225 + 25 = 250

distance = sqrt(250)

to split this distance into a 3/2 ratio, we need actually 3+2=5 equal parts. and then AM gets 3 off these parts, and MB gets 2 of these parts.

so,

distance/5 = sqrt(250)/5 = sqrt(250/25) = sqrt(10)

so,

AM = 3×sqrt(10) = sqrt(90),

and

MB = 2×sqrt(10) = sqrt(40)

now, we need to calculate back using the same Pythagoras approach (calling the coordinates of M xm and ym)

AM² = (xm - -10)² + (ym - 2)² = (xm+10)² + (ym-2)² = 90

90 = xm² + 20xm + 100 + ym² - 4ym + 4

MB² = (5 - xm)² + (7 - ym)² = 40

40 = 25 - 10xm + xm² + 49 - 14ym + ym²

as a first approach we calculate AM² - MB²

90 = xm² + 20xm + ym² - 4ym + 104

- 40 = xm² - 10xm + ym² - 14ym + 74

----------------------------------------------------

50 = 0 + 30xm + 0 + 10ym + 30

20 = 30xm + 10ym

2 = 3xm + ym

ym = 2 - 3xm

this we use now e.g. in the first equation for AM.

90 = xm² + 20xm + (2-3xm)² - 4×(2-3xm) + 104

-14 = xm² + 20xm + 4 - 12xm + 9xm² - 8 + 12xm

-10 = 10xm² + 20xm

-1 = xm² + 2xm

xm² + 2xm + 1 = 0

solving such a squared equation

xm = (-b ± sqrt(b² - 4ac))/(2a)

a = 1

b = 2

c = 1

xm = (-2 ± sqrt(4 - 4))/2 = -1

only one combined solution (as a squared equation usually has 2 solutions).

ym = 2 - 3xm = 2 - 3×-1 = 2 + 3 = 5

so, M = (-1, 5)

8 0

2 years ago

High school students across the nation compete in a financial capability challenge each year by taking a National Financial Capa

erica [24]

Using the normal distribution, it is found that a student has to score 0.6433 standard deviations above the mean to be publicly recognized.

<h3>Normal Probability Distribution</h3>

In a normal distribution with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

It measures how many standard deviations the measure is from the mean.

After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.

The top 26% of the scores are given by scores above the 74th percentile, which corresponds to Z = 0.6433, hence, a student has to score 0.6433 standard deviations above the mean to be publicly recognized.

More can be learned about the normal distribution at brainly.com/question/24663213

6 0

2 years ago

What is the inverse of the linear equation y=2x+4?

Stella [2.4K]

To find the inverse of an equation simply switch the X and y coordinates and solve for the new Y coordinate.

Y = 2x + 4
X = 2y + 4
X - 4 = 2y
X-4/2 = 2y/2

Y = X - 4/2.

5 0

3 years ago

Read 2 more answers