3 years ago

If you guys are in K12 and are in 7th grade help me!!!!!!!!!!!

Mathematics

1 answer:

Alex Ar [27]3 years ago

8 0

I wish I could help u with this one

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1/4 times the sum of a number and −3.2 is 1.8. What is the number?

joja [24]

Answer:

10.4

Step-by-step explanation:

Let the number be x

Sum of x and -3.2 : x + (-3.2) = x - 3.2

1/4 times the sum of a number and −3.2 = (1/4) * (x - 3.2)

$\dfrac{1}{4}* \left( x - 3.2 \right) = 1.8\\\\\Multiply \ the \ whole \ equation \ by \ 4 \\\\4*\dfrac{1}{4} *(x - 3.2) = 1.8*4\\\\\\x - 3.2 = 7.2\\\\Add \ 3.2 \ to \ both \ sides\\\\\\x = 7.2 + 3.2\\$

x = 10.4

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3 years ago

The ratio of oil to vinegar is 8:5 how much oil blended with 7 liters vinegar for recipe

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Write and solve an equation of ratios:

oil 8 x
---- = ---- = -----------
vin 5 7 liters

Then 5x = 56, and x = 56/5 liters (of vinegar)

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Answer:

Which is the output of the formula =AND(12>6;6>3;3>9)?

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Step-by-step explanation:

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The glee club needs to raise money for the spring trip to Europe, so the members are assembling holiday wreaths to sell. Before

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David's wife sends him to the store to buy pickles and ice cream. Ice cream cost 3 dollars per pound and pickles costs 4 dollars

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Answer:

3x+4y=60

Step-by-step explanation:

3x+4y=60

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