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3 years ago

Check all the answers that are true.

Mathematics

1 answer:

jonny [76]3 years ago

6 0

A C and D

put the fractions into a calculator dividing the top one by the bottom one and just determine whichever one is greater ^^

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What is the distance between parallel lines whose equations are y = 2x + 7 and y = 2x – 3?

malfutka [58]

Answer:

The distance is $\sqrt{20}$ or $2\sqrt{5}$ .

Step-by-step explanation:

Slope of parallel: 2

Slope of perpendicular: -1/2

Pick a point for y =2x + 7. For example (0,7)

Use the perpendicular slope to get to the other line to find the other point of y=2x-3. Look at the screenshot...I got (4,5).

Distance formula $\sqrt{(x_{2}-x_{1} )^{2}+(y_{2} -y_{1})^2 }$

Insert (0,7) and (4,5)

$\sqrt{(0-4)^{2}+(7-5)^2 }$ = $\sqrt{(-4)^{2}+(2)^2 } = \sqrt{(16)+(4)} } = \sqrt{20} = 2\sqrt{5}$

6 0

3 years ago

Phillip is standing across the classroom from his desk. He walks x steps in a straight line to his right, turns left at a 90° an

Rainbow [258]

For this case, we can model the problem as a triangle with a right angle.
Where,
x, y: lengths of the sides of the triangle
d: hypotenuse of the triangle
We then have the following relationship:
$d ^ 2 = x ^ 2 + y ^ 2
$
Clearing d we have:
$d = \sqrt{ x^2 + y^2}$
Answer:
A functions that would best model the situation above is:
D square root

6 0

4 years ago

At Hoffman's Bike Rentals, it costs $33 to rent a bike for 8 hours. How many hours of bike use does a customer get per dollar?

viktelen [127]

0.24 repeating so rounding it to the nearest hundredth would make it stay 0.24<span />

5 0

3 years ago

Help guys pleaseeeee

kkurt [141]

<h2>Answers:</h2>

Exercise 34.

$4t+72\geq 400$ and $t\leq82$ .

Exercise 35.

$30t-4$ .

<h2>Step-by-step explanation:</h2>

<h2><u>Exercise 34.</u></h2>

1. Forming the inequality.

Let's make the left side be a calculation of the total earning based on the number of tickets sols. Also, let's make the right side the cost of the dance to compare and find an adecuate minimum value of x.

$4t+72\geq 400$ .

<em>We use the </em><em>"greater or equal to"</em><em> symbol because the side of x expresses the earning of the committee, and these earnings will have to be equal or greater than the cost of the dance to be able to organize the dance.</em>

2. Solving the inequality.

$4t+72\geq 400\\ \\4t\geq 400-72\\ \\4t\geq 328\\ \\t\geq\frac{328}{4} \\ \\t\geq82$