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3 years ago

Please help! I have no idea on this at all!

Mathematics

1 answer:

KatRina [158]3 years ago

7 0

$if \: x = - 2 \: then \\ {x}^{2} = - 2 \times - 2 = 4 \\ {x}^{0} = 1 \\ {x}^{ - 1} = \frac{1}{ - 2} \\x^1=-2\\ x^{-2}=\frac{1}{4}$

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Solve x2 + 10x + 12 = 36 for x. x = â12 or x = 2 x = â11 or x = 1 x = â2 or x = 12 x = â1 or x = 11

meriva

The answer is number A: â12 or x = 2

6 0

3 years ago

What expressions equal -3x^2-27

Lady_Fox [76]

Is that x for you to multiply or is that a variable.

8 0

3 years ago

Suppose the rate of type II diabetes in 40- to 59-year-olds is 7% among Caucasians, 10% among African-Americans, 12% among Hispa

melomori [17]

Answer:

The overall probability of type II diabetes among 40- to 59-year-olds in Houston is 9.3%.

Step-by-step explanation:

We have these following rates of type II diabetes:

7% among Caucasians

10% among African-Americans

12% among Hispanics

5% among Asian-Americans.

The ethnic distribution of Houston is:

30% Caucasian

25% African-American

40% Hispanic

5% Asian-American

What is the overall probability of type II diabetes among 40- to 59-year-olds in Houston?

$P = P_{1} + P_{2} + P_{3} + P_{4}$

$P_{1}$ is the probability of finding a Caucasian with type II diabetes in Houston. So it is 7% of 30%.

$P_{1} = 0.07*0.30 = 0.021$

$P_{2}$ is the probability of finding an African-American with type II diabetes in Houston. So it is 10% of 25%.

$P_{2} = 0.1*0.25 = 0.0215$

$P_{3}$ is the probability of finding a Hispanic with type II diabetes in Houston. So it is 12% of 40%.

$P_{3} = 0.12*0.40 = 0.048$

$P_{4}$ is the probability of finding an Asian-American with type II diabetes in Houston. So it is 5% of 5%.

$P_{3} = 0.05*0.05 = 0.0025$

$P = P_{1} + P_{2} + P_{3} + P_{4} = 0.021 + 0.0215 + 0.048 + 0.0025 = 0.093$

The overall probability of type II diabetes among 40- to 59-year-olds in Houston is 9.3%.

4 0

4 years ago

What is the compound interest on a three-year $100 loan at a 10% annual interest rate

SpyIntel [72]

Year 1: $110

Year 2: $121

Year 3: $133.10

Total interest: $33.10

7 0

3 years ago

WILL GIVE BRAINLIST Examine the diagram and information to answer the question. A circle in the coordinate plane has a radius of

DanielleElmas [232]

Answer: To find the equation of the circle, it is not necessary to find the legs of the triangle first.

The length of the legs (equal) is 3√2 or 4.243

Step-by-step explanation:

The equation for a circle is similar to the Pythagorean Theorem

a² + b² = c²

( x - h )² + ( y - k )² = r², where ( h, k ) is the center and r is the radius.

The a and b terms are changed to allow insertion of h and k to locate the center of the circle on a Cartesian plane.

You can get the information needed from

Given: radius =6 and "a center at the point (3,2)"

Substitute 3 for h and 2 for k and 6 for r

( x - 3 )² + ( y - 2 )² = 6² This is the equation of the circle .

From the diagram, it appears that x-3 = y-2

So, in the equation, we can substitute 2(x²) = 36

x² = 36/2 . x² = 18

√x² = √18 = √9(2)

x = 3√2 =4.2426

the length of the horizontal leg is 4.243

Substitute for x in to find x+3 the coordinate (x,2)

the coordinate x, 2 is (7.24, 2)

Substitute for y in to find y+2, the length of the vertical leg is 4.243.

y + 2 = 6.243

So the coordinate (x,y) on the circle is (7.24, 6.24)

This does not account for Step 1 and Step 2 in the question, matching expressions or equations to the steps. I hope you will be able to sort that our with the information here.

7 0

3 years ago