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3 years ago

HELP HELP HELP PLS

Mathematics

2 answers:

Oksi-84 [34.3K]3 years ago

8 0

Answer:

21 is common denominator.

15 and 7 are the corresponding numberators.

Step-by-step explanation:

You multiply the 7 and 6, then apply to the fractions, and slowly reduce until you find a good match.

uysha [10]3 years ago

7 0

Answer:

30 and 14

Step-by-step explanation:

5/7 = times by 6 to get 30/42

2/6 = times by 7 to get 14/42

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A calculator that cost $60 in 1980 now sells for $10. What was the percent of decrease

Romashka-Z-Leto [24]

Answer: 16.6%

Step-by-step explanation:

$60 divided by 6 = $10

so divide 100 by 6 and you get about 16.6

I Hope this Helps!

4 0

3 years ago

Read 2 more answers

Why are tenths, fifths, and fourths easy to convert to percent's?

meriva

Because they all go into 100 easily. for example 10*10=100 5*20=100

5 0

3 years ago

Use substitution to solve the system of equations.

kakasveta [241]

Answer:

C (let me know if I am wrong!)

Step-by-step explanation:

We need to solve the equation.

If 5x+y = -24, then -24 - 5x = y.

x+ 3(-24-5x) = -2

= -14x-72=-2

= -14x-72+72=-2+72

= -14x=70

= -5

If x = -5, then -5 + 3y = -2.

3y = -2+5

3y = 3

y=1

So the answer is C.

4 0

3 years ago

muminat

I am rocking with C. Jasmine left class for head.

if im wrong let me know

8 0

3 years ago

Find the slope of a line that passes through (-2,1) and (4,9)

melamori03 [73]

Answer:

m = 4/3

Step-by-step explanation:

To find the slope of a line use the formula, where "m" means slope:

$m=\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

*You don't need to show this part on paper*

Choose which point you want to be point 1 and point 2. Remember the points are written (x, y).

Point 1: (-2, 1) x₁ = -2 y₁ = 1

Point 2: (4, 9) x₂ = 4 y₂ = 9

Substitute the coordinates into the formula:

*Show this part on paper*

$m=\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

$m=\frac{9-1 }{4-(-2) }$ Simplify

$m=\frac{8 }{6 }$ Reduce by dividing by 2

$m=\frac{4 }{3 }$ Slope

The slope of the line is 4/3

8 0

3 years ago