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3 years ago

8x - 2 + 4x + 10 + 3x + 5 = 180

Mathematics

1 answer:

erik [133]3 years ago

5 0

Answer: $11\frac{2}{15}$

Step-by-step explanation:

What you are trying to do is isolate the variable x. For you to do that you have to first simplify the left side of the equation and then you solve for x.

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A fair coin is tossed three times in succession. the set of equally likely outcomes is startset hhh comma hht comma hth comma th

ArbitrLikvidat [17]

If a fair coin is tossed three times, sample = 2^3 = 8 (hhh, hht, hth, thh, htt, tht, tth, ttt) where h=head and t=tail.

Probability of getting one:

Outcomes with one head (h) = 3

P(1 h) = 3/8 = 0.375

3 0

3 years ago

Read 2 more answers

Basic Algebra problem....

kompoz [17]

Answer:

2*2*3*3

Step-by-step explanation:

36 is a composite number and it 6 squared. As such, it can be factorized completely as:

$36=2\times 2\times3 \times 3$

Hence, the factored form of 36 is 2x2x3x3

5 0

3 years ago

Which of the following is a factor of 7x2 - 12x - 4? (6 points)

grin007 [14]

Answer:

We conclude that 'None of the above' is the correct answer.

Step-by-step explanation:

Given the expression

$7x^2\:-\:12x\:-\:4$

Breaking the expression into groups

$7x^2\:-\:12x\:-\:4=\left(7x^2+2x\right)+\left(-14x-4\right)$

Factor out $x$ from $7x^2\:+\:2x$

$=x\left(7x+2\right)$

Factor out -2 from $\left(-14x-4\right)$

$=-2\left(7x+2\right)$

so the expression becomes

$7x^2\:-\:12x\:-\:4=\left(7x^2+2x\right)+\left(-14x-4\right)$

$=x\left(7x+2\right)-2\left(7x+2\right)$

Factor out the common term $7x+2$

$=\left(7x+2\right)\left(x-2\right)$

Therefore, from the given options, we conclude that 'None of the above' is the correct answer.

4 0

3 years ago

Saadia has a prepaid phone plan that charges a flat fee of $15 and an additional $0.05 per minute used each month. Let x = numbe

Alexxandr [17]

Answer:

15+.05x=

223 minutes

Step-by-step explanation:

26.15-15=11.15

11.15/0.05 (cost per minute)=223 minutes

3 0

3 years ago

A non scale model of the earth has a diameter of 18 in. Within an outer clay layer, there is a core made of a ball with a diamet

PolarNik [594]

Answer:

the formula for the volume of a sphere is

$\frac{4}{3} \pi \: {r}^{3}$

r is the radius, which is half the diameter. Since the diameter of the whole sphere is 18 the radius would be half of that, which is 9. If you plug 9 into the formula you get 3052.08in.cubed. Now you must find the volume of the smaller core, the diameter of the core is 3, so the radius is 1.5 and if you plug that into the formula you get 14.13in.cubed. Since you're finding only the volume of the outside layer, you would subtract the volume of the core from the whole sphere, so 3052.08-14.13=3037.95

Your answer is 3037.95in.cubed

4 0

3 years ago