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3 years ago

−3 2/7−(−5/7)= please help me!

Mathematics

1 answer:

Finger [1]3 years ago

4 0

Answer:

-18/7

Step-by-step explanation:

When subtracting a negative, the sign becomes positive, so now the equation would be -3 2/7 + 5/7.

By turning -3 2/7 into an improper fraction, you would get -23/7 + 5/7.

-23 +5 = -18 so -18 would be the numerator over the denominator (7) equals -18/7

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2/3x+5=1 what is the solution to the equation shown?

Fudgin [204]

Answer:

x = - 6

Step-by-step explanation:

Given

$\frac{2}{3}$ x + 5 = 1 ( subtract 5 from both sides )

$\frac{2}{3}$ x = - 4

Multiply both sides by 3 to clear the fraction

2x = - 12 ( divide both sides by 2 )

x = - 6

7 0

4 years ago

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Are the graphs 8x+3y=6 and 8x-3y=6 perpendicular

Alla [95]

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4 years ago

. You draw a card from a well-shuffled deck of 52 cards. If you get a red card, you win nothing. If you get a spade, you win $4.

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Answer is in the file below

tinyurl.com/wtjfavyw

7 0

3 years ago

3. Jolene gets paid 17 cents a tree for tree planting up north. In one week she planted 2437 trees. What i

mafiozo [28]

Answer:

Wage of Jolene is 414.29 dollars per week

Step-by-step explanation:

Amount received by Jolene for planting a tree is 17 cents

Given

Total amount of trees planted in a week = 2437

Wage of Jolene is equal to product of number of trees planted and amount paid for planting one tree

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4 0

3 years ago

If y varies directly with x when y=8,x=20 find the value of x when y=42

Alecsey [184]

The value of x is 105 when y=42

Step-by-step explanation:

A direct proportion means that the change in one quantity will also cause the change in other quantity

Given

y varies directly with x

x ∝ y

when the proportionality symbol is removed a proportionality constant is introduced

$x=ky\\k=\frac{x}{y}\\Putting\ y=8\ and\ x=20\\k=\frac{20}{8}\\k = \frac{5}{2}\\So,\ the\ equation\ will\ be\\x=\frac{5}{2}y\\Putting\ y=42\\x=\frac{5}{2}*42\\x=5*21\\x= 105$

The value of x is 105 when y=42

Keywords: Proportion, Direct variation

Learn more about proportion at:

#LearnwithBrainly

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3 years ago