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katrin2010 [14]
3 years ago
13

Help me with these questions please!!!

Mathematics
1 answer:
kumpel [21]3 years ago
3 0

Answer: Here are all of the answers to the best of my ability :)

1: Solve the following equation for “y”:

3y - 4x = 15

Steps:

1. Add 4x to both sides. 3y = 4x + 15

2. Divide both sides by 3. Y= 4/3x + 5

Final answer: y= 4/3x + 5

————————————————————-

2. Write an equation in slope intercept form for a line that passes through the y axis at 5 and has a slope of -3.

Slope intercept form: y = mx + b

B= y intercept

Mx= slope

Equation: y = 3x + 5

———————————————————————————————————

3. Is (-2, 6) a solution of -3y + 5y = 4x?

Steps:

1. -3(6) + 5(6) = 4x

2. -18y + 30y = 4x

3. 12 = 4x

4. Rewrite the equation: 4x = 12

5. Divide by 4 on both sides

6. x = 3

Yes, this is a solution to -3y + 5y = 4x

————————————————————————-

4. Write the following equation in slope intercept form: x + 8y = 30

1. Add negative 8y to both sides. X = -8y + 30

Answer: x= -8y + 30

——————————————————————————-

5. Graph this equation: 2x + 5y = 20

That’s all I could find. Sorry if I made I mistake. Have a good day!

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The entrance for the amusement park is $40, visitors purchase additional $2
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2 tickets because round

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Step-by-step explanation:

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A deposit of $6,500 was invested and has grown to $8,300 in 5 years. The growth in value was via simple interest, calculated on
bagirrra123 [75]

Answer: 5.5%

Step-by-step explanation:

Since the money invested has grown to $8300 and the principal was $600, this means the interest is:

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1800 = (6500 × Rate × 5)/100

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5 0
3 years ago
Which is the equation in slope-intercept form for the line that passes through (3, 7)
quester [9]

Answer:

y =  -  \frac{5}{3} x + 12

Step-by-step explanation:

First, rewrite the given equation in the form of y=mx+c.

m is the gradient while c is the y-intercept.

3x-5y=8

5y= 3x -8

y =  \frac{3}{5} x -  \frac{8}{5}

Thus, the gradient of the given equation is ⅗.

The product of the gradients of perpendicular lines is -1.

(gradient of line)(⅗) = -1

gradient of line= -1 ÷⅗

gradient of line= -  \frac{5}{3}

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To find the value of c, substitute a coordinate.

When x=3, y=7,

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c= 7+5

c= 12

Hence, the equation of the line is y =  -  \frac{5}{3} x + 12.

6 0
3 years ago
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