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3 years ago

It takes Emily 9 minutes to bicycle 3/10 of the way to school. How many minutes does it

Mathematics

1 answer:

xeze [42]3 years ago

6 0

Answer:30

Step-by-step explanation:

3/10x=90

Use reciprocal to multiple both sides

x=answer

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How many tens make 40 + 50

Genrish500 [490]

It would be 5 tens + 4 tens = 9 tens

5 0

3 years ago

The side lengths of the following right triangle 15,20 and 25, as shown below. The altitude from the right angle splits the hypo

kompoz [17]

Answer:

$h = 12$

$x = 9$

$y= 16$

Step-by-step explanation:

Given

The attached triangle

Required

Find h, x and y

Let the base of the triangle be 15.

So, the area is:

$A = \frac{1}{2} * 15 * 20$

$i.e\ height = 20$

$A = \frac{1}{2} * 300$

$A = 150$

Let the base of the triangle be 25.

So, the area is:

$A = \frac{1}{2} * 25 * h$

$i.e\ height = h$

$A = \frac{1}{2} * 25h$

Substitute $A = 150$

$\frac{1}{2}*25h = 150$

Solve for h

$h = \frac{150 *2}{25}$

$h = 6 *2$

$h = 12$

Considering the smallest triangle

$Hypotenuse = 15$

So:

$15^2 = h^2 + x^2$

$15^2 = 12^2 + x^2$

This gives:

$15^2 - 12^2 = x^2$

$81 = x^2$

Take square roots

$9 =x$

$x = 9$

Solving for y

$x + y = 25$

$y= 25 - x$

$y= 25 - 9$

$y= 16$

7 0

2 years ago

1. According to New Jersey Transit, the 8:00 a.m. weekday train from Princeton to New York

love history [14]

Okayuyyyyyyyyyyyyyyyyyyyyyyyyy

5 0

3 years ago

Given an integer, how do you find its opposite?

iren2701 [21]

Given a integer depending on whether or not it is positive or negative it is always opposite of what it is. For example the opposite of 7 is -7

5 0

3 years ago

Find the 72nd term of the arithmetic sequence -27, -11, 5,

mixas84 [53]

Answer:

1109

Step-by-step explanation:

an = d (n - 1) + c

an = what you're looking for

n = term position

d = the common difference, in your case, 16

c = first term of the sequence, or -27

a₇₂ = 16(72 - 1) + -27 = 1109

5 0

3 years ago