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3 years ago

Melanie can run around the track 9 times in 28 minutes. At this rate, how many laps can she run in 1 hour and 15 minutes

Mathematics

1 answer:

Sliva [168]3 years ago

5 0

Answer:

She can run 24 laps in 1 hour and 15 minutes.

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Is <br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B100%7D%20" id="TexFormula1" title=" \sqrt{100} " alt=" \sqrt{100} " align=

Rainbow [258]

sqrt (100) is a rational number

10*10 = 100 (-10)*(-10) =100

sqrt(100)

=-10, 10

these are rational numbers

7 0

3 years ago

I need help i don't get it !!!!!

joja [24]

Answer:

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

sin theta = opp / hyp

sin 30 = x/8

8 sin 30 =x

8 (1/2) = x

4 0

3 years ago

Read 2 more answers

PLEASE HELP WITH THIS QUESTION, WILL MARK BRAINLIEST + 10 POINTS<br> #17

slega [8]

Sin 30 = 16/x
x = 16/sin 30 = 32
The answer is d: 32.

3 0

3 years ago

A batman costume costs $20. A harlequin costume costs twice as much as the batman costume. How much does a harlequin costume cos

Gnoma [55]

Answer:the harleyquin costume would cost 40 $

Step-by-step explanation: as given the batman costume costs 20$. so 20 times 2 equals 40$.

20*2= 40$

6 0

2 years ago

Read 2 more answers

The problem is in the picture :)

frozen [14]

Answer:

Last option: 4

Step-by-step explanation:

The quadratic equation simplified: $x^2-4x=-\frac{7}{2}$ has the form:

$ax^2+bx=c$

In this case, you can identify that "a", "b" and "c" are:

$a=1\\b=-4\\c=-\frac{7}{2}$

To solve this quadratic equation by completing the square, Carlos should add $(\frac{b}{2})^2$ to both sides of the equation. This is:

$(\frac{-4}{2})^2=(-2)^2=4$

Then:

$x^2-4x+4=-\frac{7}{2}+4$

Therefore you can observe that the number he should add to both sides of the equation is: 4

8 0

3 years ago

Melanie can run around the track 9 times in 28 minutes. At this rate, how many laps can she run in 1 hour and 15 minutes ​

Melanie can run around the track 9 times in 28 minutes. At this rate, how many laps can she run in 1 hour and 15 minutes