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3 years ago

What are the solutions to the equation? x2 + 6x = 40

2 answers:

8 0

Just plug in the numbers:

4: 16 + 24 = 40 YES

5 = 25 + 40 ≠ 40 NO

8: 64 + 48 ≠ 40 NO

10: 100 + 60 ≠ 40 NO

So A. is the correct answer. Just to be sure:

-10: 100 + ( - 60) = 40

Your answer is A. Hope that helps! :)

Zielflug [23.3K]3 years ago

6 0

A............................

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Based on data from a statistical abstract, only about 16% of senior citizens (65 years old or older) get the flu each year. Howe

SSSSS [86.1K]

Answer: The required probability is 2.24%.

Step-by-step explanation:

Since we have given that

Percentage of people are senior citizens ( 65 years old or older ) = 14%

Percentage of people are under 65 years old = 100-14 = 86%

Probability that senior citizens get the flu each year = 16%

Probability that under 65 years old get the flu each year = 30%

So, Probability that a person selected at random from the general population is senior citizen who get the flu this season is given by

$P(S\cap F)={P(F|S)\times P(S)\\\\P(S\cap F)=0.16\times 0.14\\\\P(S\cap F)=0.0224\\\\P(S\cap F)=2.24\%$ Hence, the required probability is 2.24%.

3 0

3 years ago

Read 2 more answers

What is the total surface area of the square pyramid?

harkovskaia [24]

Answer:

Step-by-step explanation:

$A_1 = a^2 = 14^2 = 196$

$A_2 = 4(\frac{b * h}{2}) = 4(\frac{14 * 12}{2}) = 4(\frac{168}{2}) = 4 * 84 = 336$

$SA = A_1 + A_2 = 196 + 336 = 532\ cm^2$

5 0

3 years ago

The value of n. 3n = (3^2)8

cupoosta [38]

Answer:

n= 24

because 3*24=72

and (3^2)8 = 9*8=72

8 0

3 years ago

If F(x)=2/3x^2+8x, what is the value of f(6)

Delvig [45]

Answer:

f = 2x + 24/ 3

Step-by-step explanation:

Step 1: Divide both sides by x.

fx/x = 2/3 x^2 + 8x/x

f = 2x + 24/3

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3 years ago

What is f(-2) if f(x)=1/2x

Butoxors [25]

f(x) means x = -2 if you multiply 1/2 by -2 you get -1

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3 years ago