Ask question

Ask question

All categories

4 years ago

11

Kendra had twice as much money as kareem. Kendra later spent $8 and kareem earned $6. By then,the two had the same amount of mon

ey. How much money did each have originally?

1 answer:

Svet_ta [14]4 years ago

6 0

Answer:

x = 2y

x - 8 = y + 6

replace x by 2y in the second equation

2y - 8 = y + 6

y - 8 = 6

y = 14

x = 2*14 = 28

Kendra had $28 and Kareem had $14.

You might be interested in

Please help<br><br> In which table does y vary directly with x?

grigory [225]

Answer:

Table D

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

<u><em>Verify each case</em></u>

<em>Table A</em>

For x=1, y=3

Find the value of k

$k=y/x$ -----> $k=3/1=3$

For x=2, y=9

Find the value of k

$k=y/x$ -----> $k=9/2=4.5$

the values of k are different

therefore

The table A not represent a direct variation

<em>Table B</em>

For x=1, y=-5

Find the value of k

$k=y/x$ -----> $k=-5/1=-5$

For x=2, y=5

Find the value of k

$k=y/x$ -----> $k=5/2=2.5$

the values of k are different

therefore

The table B not represent a direct variation

<em>Table C</em>

For x=1, y=-18

Find the value of k

$k=y/x$ -----> $k=-18/1=-18$

For x=2, y=-9

Find the value of k

$k=y/x$ -----> $k=-9/2=-4.5$

the values of k are different

therefore

The table A not represent a direct variation

<em>Table D</em>

For x=1, y=4

Find the value of k

$k=y/x$ -----> $k=4/1=4$

For x=2, y=8

Find the value of k

$k=y/x$ -----> $k=8/2=4$

For x=3, y=12

Find the value of k

$k=y/x$ -----> $k=12/3=4$

All the values of k are equal

therefore

The table D represent a direct variation or proportional relationship

The linear equation is $y=4x$

6 0

3 years ago

Read 2 more answers

When placed near a second charge, a 60-μC charge experiences a force of 0.30 N. What is the electric field strength at the locat

jeka57 [31]

Answer:

$E=5000N/C$

Step-by-step explanation:

From the question we are told that

Charge $q= 60 \mu C$

Force $F_=0.30N$

Generally the equation for electric field strength is mathematically given as

$E=F/q$

$E=\frac{0.30}{60*10^-^6}$

Therefore

$E=5000N/C$

4 0

3 years ago

What calculation can I use to find 961 after a 24% decrease?

dsp73

Answer:

d

Step-by-step explanation:

i know it's rhe right answer

5 0

3 years ago

Read 2 more answers

10 POINTS only answer if you KNOW

kenny6666 [7]

The answer is D, tony would always be behind Robert.

5 0

3 years ago

You can buy 5 cans for green beans at the village market for 3.70. You can buy 10 of the same cans of beans at sams club for 4.1

il63 [147K]

the rate for 5 cans for $3.70 is 0.74

the rate for 10 cans for $4.10 is 0.41

so the better buy is 10 cans for $4.10 at sams

4 0

3 years ago