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Colt1911 [192]
2 years ago
7

Half of the students in Max's class volunteer at the local community center.Fifteen students do not volunteer.If there are 12 bo

ys in Max's class, how many girls are in the class? Write and solve an equation.
Mathematics
2 answers:
choli [55]2 years ago
7 0
Because half of the students volunteered and 15 didn't, there are 30 students. Now take that subtract by 12 and you get the number of girls. 
Equation: 15(2)-12=y
y=18
Crazy boy [7]2 years ago
3 0
The answer is 18. the equation is (15 x 2) - 12. hope I helped :)
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Three missiles are fired at an enemy arsenal. The probabilities the individual missile will hit the arsenal are 0.75, 0.85, and
Fantom [35]
The probability that at least two of the missiles hit the arsenal:
P ( x ≥ 2 ) = P ( x = 2 ) + P ( x = 3 )
P ( x = 2 ) = 0.75 · 0.85 · 0.1 + 0.85 · 0.9 · 0.25 + 0.75 · 0.9 · 0.15 =
= 0.06375 + 0.10125 + 0.19125 = 0.35625
P ( x = 3 ) = 0.75 · 0.85 · 0.9 = 0.57375
P ( x ≥ 2 ) = 0.35625 + 0.57375 = 0.93
Answer:
The probability is 0.93 or 93%. 
3 0
3 years ago
For what values of K does x2+kx+9=0
Airida [17]

Answer:

k = 6

Step-by-step explanation:

x {}^{2}  + kx + 9 = 0

here,

a = 1,

b = k

c = 9

now,

D = b {}^{2}  - 4ac

k {}^{2}  - 4(1)(9) = 0 \\   k {}^{2}  - 36 = 0 \\ k {}^{2}  = 36 \\ k = 6

4 0
2 years ago
Please help me. Brainliest to best answer!
Bingel [31]

Answer:

4y + 48 - 16x = 0        ~Solve for y~

4y = -48 + 16x

y = -12 + 4x

The slope is 4.

We'll use the point (1, 4) and m = 4.

Plug these into the equation: y - y1 = m(x - x1)

y - 4 = 4(x - 1)

y - 4 = 4x - 4

y = 4x 

6 0
2 years ago
Some critters got into the oatmeal. They ate 3 packages of Mike's, 2 of Chads, and 6 of Matt's. Toni lost half as much as the ot
Reptile [31]

I think the critters ate 5 1/2 packages of Toni’s oatmeal.

If he ate half as much as the others you should total up the others and divide it by 2.

3 + 2 + 6 = 11 11 divided by 2 = 5 1/2

I hope you find this helpful.

3 0
3 years ago
Read 2 more answers
Consider the first four terms of the sequence below.
Lelu [443]

Answer:

a₈ = -  1 / 128

Step-by-step explanation:

Given:

First four terms of the sequence

a₁= 1, a₂= - 1/2, a₃= 1/4 and a₄= -1/8

First we recognize that this is a geometric series (sequence) and we must calculate quotient q.

q = a₂/a₁ = a₃/a₂ = (-1/2)/1 = (1/4)/(-1/2) = - 1/2

q = - 1/2

Formula for calculating n-th term is:

aₙ = a₁ · qⁿ⁻¹

According to this:

a₈ = 1  (-1/2)⁷ = - 1/ 128

God with you!!!

8 0
3 years ago
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