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2 years ago

Hi help please i’m not sure how to do this and its due soon

Mathematics

1 answer:

strojnjashka [21]2 years ago

4 0

Answer:

slope = $\frac{2}{7}$

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = $\frac{2}{7}$ x + $\frac{3}{4}$ ← is in slope- intercept form

with slope m = $\frac{2}{7}$

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Yesterday the student councils bank account balance was -$54.31. Today the balance is $65.10. What is the change in dollars in t

uysha [10]

-$69.68 is your answer if I hope that this is correct.

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2 years ago

This is how dora subtracts 73-26. 73-3=70. 70-?=50. ?-?=? fill in the blanks to solve

olganol [36]

Answer:

73-3=70

70-20=50

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2 years ago

Which of the following is an extraneous solution of the square root of -3x-2=x+2

yarga [219]

Answer:

x=-6 is an extraneous solution

Step-by-step explanation:

we have

$\sqrt{-3x-2} =x+2$

squared both sides

$-3x-2=(x+2)^2$

$-3x-2=x^2+4x+4$

$x^2+7x+6=0$

solve the quadratic equation by graphing

The solution is x=-6 and x=-1

see the attached figure

<u><em>Verify each solution</em></u>

substitute the value of x in the original expression

For x=-6

$\sqrt{-3(-6)-2} =-6+2$

$\sqrt{16} =-4$

$4=-4$ ----> is not true

Is an extraneous solution

For x=-1

$\sqrt{-3(-1)-2} =-1+2$

$\sqrt{1} =1$

$1=1$ ----> is true

Is the solution

4 0

2 years ago

An electric utility company determines the monthly bill for a residential customer by adding an energy charge of 7.32 cents per

Sedaia [141]

Answer:

$y(x) = 0.0732x + 17.32$

Step-by-step explanation:

The equation for the monthly charge has the following format

$y(x) = ax + b$

In which y(x) is the cost in function of the number of kilowatt-hours used(x), a is the price of each killowatt hour and b is the fixed(base) charge.

Base charge of $17.32 per month.

This means that $b = 17.32$

charge of 7.32 cents per kilowatt-hour

Our answer is in dollars. Each dollar is 100 cents. So 7.32 cents is $a = 0.0732$

Write an equation for the monthly charge y in terms of x, the number of kilowatt-hours used.

$y(x) = ax + b$

$y(x) = 0.0732x + 17.32$

6 0

2 years ago

Math 7 Grade 7. Can anyone help me answer these questions?

zaharov [31]

1. What is the opposite of -2? 2

2. When we add opposites together they will always equal = ? 0

This is also known as what ?
additive inverse

Adding with integers with SAME signs.

-8 + -3 = -11

-12 + -15 = -27

-3 + -9 + -25 = -37

6 0

2 years ago