All categories

2 years ago

If y-x=4 and x is three times the value of y, what is the value of x + y?

Mathematics

1 answer:

Eduardwww [97]2 years ago

6 0

Answer:

E = 8

Step-by-step explanation:

y - x = 4

y - (3y) = 4

y - 3y = 4

2y = 4

y = 4/2

y = 2

x = 3y

x = 3×2

x = 6

x + y = 2+6

x+y = 8

You might be interested in

Find the supplement of 2/3of a right angle

Varvara68 [4.7K]

Answer: supplement is 126 degrees 7

Step-by-step explanation: 2/3 of a right angle = (2/3 * 90) degrees = 60 degrees and its complement is 30 degrees 3/5 of a right angle = (3/5 * 90) degrees = 54 degrees and its is

supplement is 126 degrees 7

4 0

3 years ago

A group of hikers is progressing steadily along up uphill trail. the graph shows their elevation

AysviL [449]

We can see the graph

4 0

3 years ago

10 2.5 16 4 ? 7.5 48 12 Which statement explains how to find the number of minutes it takes to bike 7.5 miles? Find the ratio of

svet-max [94.6K]

Answer:

Find the ratio of minutes to miles, 4:1. Multiply 7.5 by 4.

Step-by-step explanation:

Given

Minutes: 10 || 16 || ? || 48

-----Miles: 2.5 || 4 || 7.5 || 12

Required

Which statements solve for the missing value?

First, we need to calculate the ratio of minutes to mile

$Ratio = \frac{Minutes}{Mile}$

When minutes = 16; mile = 4

So, we have:

$Ratio = \frac{16}{4}$

$Ratio = 4$

Next, we multiply the ratio by 7.5

$Minutes = Ratio * 7.5$

$Minutes =4 * 7.5$

$Minutes = 30$

<em>Hence, option B answers the question.</em>

7 0

3 years ago

Please help! This is super urgent I’m really tired and need to get my work done since it’s about to be due PLEASE ANSWER THIS IF

Anna71 [15]

Answer:

-12

Step-by-step explanation

√361 - 2(-3)² - /4-17/

19 - 18 -13= -12

8 0

3 years ago

Use the following table to find the value of h'(3) if h(x)=g[f(x)]

nydimaria [60]

Since

h(x) = g(f(x)), h'(x) = g'(f(x))×f'(x) (Chain rule).

Setting x=3 we get

h'(3) = g'(f(3))×f'(3)

Plugging in values we get

h'(3) = g'(4)×7

h'(3) = 2×7

h'(3) = 14

3 0

3 years ago