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babymother [125]
3 years ago
8

Movie tickets are $4 for regular admission and $3 for seniors. On a night where there were 190 people and total sales of $720 ho

w many regular admission tickets were sold?
A. 50
B. 150
C. 40
D. 140
Mathematics
2 answers:
labwork [276]3 years ago
8 0
Answer is B: 150

write two equations

r+s=190
4r+3s=720

solve by substitution

the get r=150 s=40
Nonamiya [84]3 years ago
6 0

Answer:

150

Step-by-step explanation:

So if we rearrange the second equation we can get:

s = 190 - a

Now we substitute this into the first equation:

4a + 3(190 - a) = 720

4a + (570 - 3a) = 720

4a + 570 - 3a = 720

4a - 3a = 720 - 570

a = 150

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Step-by-step explanation:

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The scale for a scale drawing is 8 millimeters: 1 centimeter. Which is larger,the actual object or the scale drawing? PLEASE PLE
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3 years ago
1 in 4 adults are on a diet. in a random sample of 10 adults, what is the probability that the number on a diet is exactly 4​
Tatiana [17]

Answer:

14.6%

Step-by-step explanation:

Use binomial probability:

P = nCr pʳ (1−p)ⁿ⁻ʳ

where n is the number of trials,

r is the number of successes,

and p is the probability of success.

Here, n = 10, r = 4, and p = 1/4.

P = ₁₀C₄ (1/4)⁴ (1−1/4)¹⁰⁻⁴

P = 210 (1/4)⁴ (3/4)⁶

P ≈ 0.146

There is an approximate 14.6% probability that exactly 4 of the 10 adults are on a diet.

4 0
3 years ago
Lim x-0 3x²/(1-cos5x)
mylen [45]

The limit is presented in the following undefined form:

\displaystyle \lim_{x\to 0}\dfrac{3x^2}{1-\cos(5x)} \to \dfrac{3\cdot 0^2}{1-\cos(5\cdot 0)} = \dfrac{0}{0}

In cases like this, we can use de l'Hospital rule, which states that this limit, if it exists, is the same as the limit of the derivatives of numerator and denominator.

So, we switch

\dfrac{f(x)}{g(x)}\to\dfrac{f'(x)}{g'(x)}

The derivative of the numerator is

\dfrac{d}{dx} 3x^2 = 6x

Whereas the derivative of the denominator is

\dfrac{d}{dx} (1-\cos(5x)) = 5\sin(5x)

So, the new limit is

\displaystyle \lim_{x\to 0}\dfrac{6x}{5\sin(5x)} \to \dfrac{6\cdot 0}{5\cdot 0} = \dfrac{0}{0}

So, it would seem that we didn't solve anything, but indeed we have! Recall the limit

\displaystyle \lim_{x\to 0} \dfrac{ax}{\sin(bx)} = \dfrac{a}{b}

to conclude that the limit converges to \dfrac{6}{25} [/tex]

4 0
4 years ago
Read 2 more answers
Help loll i’m confused
umka21 [38]

Answer: 14.90$ weekly deduction

Step-by-step explanation:

Answer:

$14.9 deduction

Step-by-step explanation:

Silvaro borrowed $89.40 from hsi brother

Silvaro decided that he will pay him back the money in six months of allowance.

Therefore the effect of the payment in his bank account can be calculated as follows.

= $89.40/6

= $14.9

Hence the payment will have a deduction of $14.9 from his monthly bank account

Hope it helps and if it does mark me brainliest.

7 0
3 years ago
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