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4 years ago

Solve 3x − 5y = 20 15y = 9x − 60

Mathematics

2 answers:

Novay_Z [31]4 years ago

8 0

X is equal to 10 and y is equal to 2

slamgirl [31]4 years ago

7 0

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Solve 3(x+2)+5(x+2)=64

valkas [14]

Answer:

Step-by-step explanation:

3x+6+5x+10=64

3x+5x+6+10=64

8x+16=64

8x=64-16

8x=48

divide both sides by 8

x=6

6 0

3 years ago

What is f(4) – g(3)?

const2013 [10]

Answer:

f4-g3

Step-by-step explanation:

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3 years ago

Samir also picks pumpkins from his garden. He picked 6 7/10 kg, but 2.6 of pumpkins were spoiled and could not be used for decor

QveST [7]

Answer:

6.7kg - 2.6kg = 4.1kg

Step-by-step explanation:

6 7/10 is equal to 6.7. If we have 6.7kg of pumpkins, but we can't use 2.6kg, then we subtract to find the amount that we can use.

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2 years ago

What is the equation of the line that passes through (-3,-1 ) and has a slope of 3/5

vfiekz [6]

The point-slope form:

$y-y_1=m(x-x_1)$

We have the point (-3, -1) and the slope m = 3/5. Substitute:

$y-(-1)=\dfrac{3}{5}(x-(-3))\\\\y+1=\dfrac{3}{5}(x+3)\qquad\text{use distributive property}\\\\y+1=\dfrac{3}{5}x+\dfrac{9}{5}\qqua\text{subtract 1 from both sides}\\\\y=\dfrac{3}{5}x+\dfrac{4}{5}\qquad\text{multiply both sides by 5}\\\\5y=3x+4\qquad\text{subtract 3x from both sides}\\\\-3x+5y=4\qquad\text{change the signs}\\\\3x-5y=-4$

Answer:

point-slope form: y + 1 = 3/5(x + 3)

slope-intercept form: y = 3/5x + 4/5

standard form: 3x - 5y = -4

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3 years ago

Nia plans to put enough money in the bank each week for 100 weeks so that the amount in the bank is always proportional to the w

kobusy [5.1K]

Nia will have $250 in the savings account

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3 years ago

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