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3 years ago

One number is 2 more than 3 times another. Their sum is 22. Find the numbers. 8, 14 5, 17 2, 20 4, 18 10, 12

Mathematics

1 answer:

xxTIMURxx [149]3 years ago

5 0

9514 1404 393

Answer:

(b) 5, 17

Step-by-step explanation:

You can try the answer choices easily enough.

2 +3×8 ≠ 14

2 +3×5 = 17 . . . . this choice works (5, 17)

2 +3×2 ≠ 20

2 +3×4 ≠ 18

2 +3×10 ≠ 12

Or, you can solve the equation:

x + (2 +3x) = 22

4x = 20 . . . . . . . . subtract 2

x = 5 . . . . . . . . . . divide by 4

The numbers are 5 and (22 -5) = 17.

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The correct answer is (-2,-5).

Step-by-step explanation:

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4 years ago

Tanya is training a turtle for a turtle race. For every 5/6 of an hour that the turtle is crawling, he can travel 1/7 of a mile.

Kamila [148]

Answer:

6/35 miles per hour

Step-by-step explanation:

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6 0

3 years ago

The midpoint of JK is point L at (–1, 8). One endpoint is J(4, –15). Which equations can be solved to determine the coordinates

ycow [4]

Given two endpoints: $(x_1,\ y_1)$ and $(x_2,\ y_2)$ , the midpoint of the two endpoints $(x_m,\ y_m)$ is given by
$(x_m,\ y_m)=\left( \frac{x_1+x_2}{2} ,\ \frac{y_1+y_2}{2}\right)$

Thus, given the midpoint L(-1, 8) and one endpoint J(4, -15). The second endpont is given by
$(-1,\ 8)=\left( \frac{x_1+4}{2} ,\ \frac{y_1+(-15)}{2}\right)$
i.e.
$\frac{x_1+4}{2} =-1 \\ \\ x_1+4=-2 \\ \\ x_1=-2-4=-6$
and
$\frac{y_1+(-15)}{2}=8 \\ \\ y_1-15=16 \\ \\ y_1=16+15=31$

6 0

3 years ago

Read 2 more answers

Having trouble with proving Lines Parallel on this page. Help?

snow_tiger [21]

For #1. Step 1: Set the equations equal to one another: (3x + 20) = (2x + 40)

Step 2: Subtract 2x on both sides of the equal sign: (3x-2x + 20) = (2x-2x + 40)

x + 20=40

Step 3: Subtract 20 on both sides of the equal sign: x + 20-20= 40-20

x=20

Step 4: plug in 20 for x: 3(20) + 20= 80 & 2(20) + 40= 80

6 0

4 years ago