the ratio of Jane to Maria's income is 8:5. If jane's income is $400 what is Maria's income? How much more greater is Jane's income compared to Maria'?

Answers

Answer 1

Answer: part 1
8:5
400:250
notice that to keep proportion, you must multiply each side by 50
part 2
find the difference
400-250

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Fractions. Help. Please?

Answers

$x=0.\overline{8}\n\n10x=8.\overline{8}\n\n10x-x=8.\overline{8}-0.\overline{8}\n\n9x=8\n\nx=(8)/(9)$

5 mile
how many feet

Answers

A mile is 5280 feet so you do 5 times 5280 to get 26400.

On a given morning the temperature was 71°F. The temperature dropped 5°F and then rose 8°F. How much does the temperature need to rise or fall to return to the initial temperature of 71°F? A) Fall 8°F
B) Fall 3°F
C) Rise 8°F
D) Rise 5°F

Answers

The temp starts at 71 degrees then drops 5 degrees

71 - 5 = 66 degrees

then it rises 8 degrees

66 + 8 = 74 degrees

How much does the temp have to rise or fall to get back to 71...

74 - 71 = 3 degrees

It has to fall 3 degrees F. Answer B.

B. Fall 3°F is your answer.

Does x=1.6 satisfy the equation 6-4x=-x/4? explain

Answers

plug 1.6 in for x to see if it is correct:
6- 4x= -x/4

6- 4(1.6)= -(1.6)/4 (divide -1.6 and 4)

6-4(1.6)= -0.4 (multiply 1.6 and -4)

6-6.4= -0.4 (subtract 6 and 6.4)

-0.4=-0.4

-0.4 does equal -0.4. so that means that x does equal 1.6.

Final answer:

Substituting x=1.6 into the equation 6-4x=-x/4 doesn't result in an equality, hence, x=1.6 doesn't satisfy this equation.

Explanation:

To verify if x=1.6 satisfies the equation 6-4x=-x/4, we just need to substitute 1.6 in the place of x in the equation and check if both sides of the equation balance. The left side of the equation would then be: 6-4(1.6) = 0.4. The right side of the equation becomes: -1.6/4 = -0.4. As we can see the left side of the equation doesn't equal the right side, hence, x=1.6 doesn't satisfy the equation 6-4x=-x/4.