HELPPPP I need this for a math quiz for my grade

Mathematics

1 answer:

Natasha2012 [34]4 years ago

8 0

Answer: use photo math if u are virtually

Step-by-step explanation:

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Use the distributive property to expand the expression 0.8(50m-30) in simplified Expression

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The answer to this problem is40m-24

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What is the regular price of a taco before the discount

Amanda [17]

Answer:

Step-by-step explanation:

100 x 0.4 = 40 and that is the discount so you subtract that off the price so 100 - 40 = 60

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3 years ago

What is the answer to 5x-7y=14

Anestetic [448]

$5x-7y=14 \\ \\7y = 5x-14 \ \: 7 \\ \\y=\frac{5}{7}x -\frac{14}{7} \\ \\y=\frac{5}{7}x -2$

$Linear \ functions \ Where \ : \\y=mx + b \\x,y \ \ \ are \ the \ coordinates \ of \ any \ point \ on \ the \ line \\m \ \ \ \ is \ the \ slope \ of \ the \ line \\ b \ \ \ \ is \ the \ y-intercept \ (where \ the \ line \ crosses \ the \ y-axis) \\ \\m=\frac{5}{7}$

$x-intercept is : \ \ y=0 \\ \\0=\frac{5}{7}x -2 \\ \\\frac{5}{7}x =2 \ \ \cdot /(\frac{7}{5}) \\ \\ x=\frac{14}{5} \\ \\(\frac{14}{5},0)\\ \\y-intercept is : \ \ x=0 \\\\y=\frac{5}{7} \cdot 0 -2\\ \\ y=-2 \\ \\(-2,0)$

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3 years ago

What is the precent of 15 is 12

kati45 [8]

100%/x%=12/15
(100/x)*x=(12/15)*x - we multiply both sides of the equation by x
100=0.8*x - we divide both sides of the equation by (0.8) to get x
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Simpily the expression below: 2(4x + 5y)

wolverine [178]

Answer: 8x+10y

Step-by-step explanation:

2(4x)= 8x

2(5y)= 10y

8x+10y

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