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2 years ago

A group bought 12 movie tickets that cost a total of $120. The group also bought 3 large drinks and 2 large popcorn.

Mathematics

2 answers:

In-s [12.5K]2 years ago

8 0

10 student tickets were bought

Agata [3.3K]2 years ago

5 0

Answer:

10 student tickets were bought.

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If rectangle A has a length and width that are z times the length and width of rectangle B, which of the following is true?

coldgirl [10]

The answer is A the perimeter of rectangle A is z times the perimeter of rectangle B

6 0

2 years ago

Which of the following graphs represents the solution set for 7(4x – 1 ) + 6x > –279? PLEASE HELP

Luda [366]

First, solve the inequality:
$7(4x - 1 ) + 6x \ \textgreater \ -279\\
28x-7+6x\ \textgreater \ -279\\
34x\ \textgreater \ -272\\
x\ \textgreater \ -8$
Since x is greater than -8, you have the arrow point up the graph towards the positive side starting at -8.
Since it's greater than but not equal to -8, the circle is open.

Thus your graph is D.

3 0

2 years ago

Solve |p + 2| = 10Solve |p + 2| = 10 {-12} {-8, 8} {-12, 8}

valentinak56 [21]

By definition, we have

$|p+2| = \begin{cases} p+2 &\text{ if } p+2 \geq 0 \\-p-2 &\text{ if } p+2 < 0 \end{cases}$

So, we have to solve two different equations, depending of the possible range for the variable. We have to remember about these ranges when we decide to accept or discard the solutions:

Suppose that $p+2\geq 0 \iff p \geq -2$

In this case, the absolute value doesn't do anything: the equation is

$p+2 = 10 \iff p = 10-2 = 8$

We are supposing $p \geq -2$ , so we can accept this solution.

Now, suppose that $p+2 < 0 \iff p < -2$ . Now the sign of the expression is flipped by the absolute value, and the equation becomes

$-p-2 = 10 \iff -p = 12 \iff p = -12$

Again, the solution is coherent with the assumption, so we can accept this value as well.

3 0

3 years ago

A researcher at a major clinic wishes to estimate the proportion of the adult population of the United States that has sleep dep

Thepotemich [5.8K]

Answer: n = 600.25 ≈ 601 ( sample size)

the minimum sample size of the adults in United State who have sleep deprivation is 601

Step-by-step explanation:

Given that;

the confidence level = 95% = 0.05

the Margin of error E = 4% = 0.04

∴ level of significance ∝ = 1 - C.L

∝ = 1 - (95/100)

= 0.05

Z∝/2 = 0.05/2 = 0.025

Z-critical value at 95% confidence level is OR level of significance at 0.025 = 1.96 (z-table)

Now to calculate the sample size, we say

n = (Z(critical) / M.E )² P ( 1 - P)

now we substitute

n = (1.96 / 0.04)² × 0.5 ( 1 - 0.5)

n = 2401 × 0.5 × 0.5

n = 600.25 ≈ 601

Therefore the minimum sample size of the adults in United State who have sleep deprivation is 601

6 0

3 years ago

Three dresses are placed side-by-side one dresser is 6’10” wide another dresser is 5’4” wide and the third is 3’11” wide how wid

myrzilka [38]

Answer:

16'1"

A) 6' + 5' + 3' = 14'

B) 10" + 4" + 11" =25" = 2'1"

A+B= 16'1"

1 Feet = 12 Inches

8 0

2 years ago