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3 years ago

Please help me with this problem

Mathematics

1 answer:

eimsori [14]3 years ago

6 0

Find the equation of the first line using the two given points: (1,-1) (-1,-5)

Slope = change in Y over change in x:

Slope = (-5-(-1)) / (-1-(1) = -4/-2 = 2

Now find y intercept: y - y1 = m(x-x1) = y -(-1) = 2(x-1)

Simplify to get y = 2x-3

Now a perpendicular line has a opposite reciprocal slope.

The perpendicular line would be y = -1/2x - 3

You are told the y intercept is -4 units greater, so add -4 to -3 to get -7

The answer would be A. y = -1/2x-7

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Need help with this

maw [93]

Answer:

0, 5/4

Step-by-step explanation:

If $k=0$ , you get 0=0, which is obviously true.

As long as K is not 0, you can divide by k and get $4k=5$ which is solved by $k=5/4$

6 0

3 years ago

PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!

Llana [10]

Define your two QUESTIONS

Write your system of EQUATIONS

SOLVE the system of equations.

Find the SOLUTION to the question being asked.

6 0

3 years ago

Each month, a shopkeeper spends 7x+19 dollars on rent and electricity. If he spends 5x−2 dollars on rent, how much does he spe

insens350 [35]

The shopkeeper spends 2x + 21 dollars on electricity

The amount the shopkeeper spends on electricity less than $100 is:

x < 39.5

<h3>What is a linear inequality?</h3>

Linear inequality explains the range of values that a variable represents.

Total amount spent by the shopkeeper = 7x + 19

Amount spent on rent = 5x - 2

Total amount spent = Amount spent on rent + Amount spent on electricity

(7x + 19) = (5x - 2 ) + Amount spent on electricity

Amount spent on electricity = (7x + 19) - (5x - 2)

Amount spent on electricity = 7x - 5x + 19 + 2

Amount spent on electricity = 2x + 21

For which value(s) of x is the amount the shopkeeper spends on electricity less than $100?

Amount spent on electricity < 100

2x + 21 < 100

2x < 100 - 21

2x < 79

x < 79/2

x < 39.5

Learn more on linear inequalities here: brainly.com/question/11613554

6 0

2 years ago

A family eats at a restaurant. The bill is $42. The family leaves a tip and spends $49. 77. How much was the tip in dollars'.

Sliva [168]

Answer:

$7.77

Step-by-step explanation:

49.77

4 0

3 years ago

Find the quotient of 4.13 x 10^-8 and 0.04 x 10^5. In two or more complete sentences, explain each step in your calculations.Inc

poizon [28]

we know that

Quotient is the number resulting from the division of one quantity by another

Let

x--------> the first quantity

y------> the second quantity

q------> the quotient

$q=\frac{x}{y}$ -------> equation 1

in this problem

$x=4.13*10^{-8} \\ y= 0.04*10^{5}$

Substitute the values in the equation 1

$q=\frac{4.13*10^{-8}}{0.04*10^{5}}$

Simplify

$q=\frac{4.13*10^{-8}}{0.04*10^{5}}=\frac{4.13}{0.04}*10^{-8}*10^{-5}=\frac{4.13}{0.04}*10^{-13}\\ \\q=103.25*10^{-13}\\ \\q= (1.0325*10^{2})*10^{-13}\\ \\q= 1.0325*10^{-11}$

therefore

<u>the answer is</u>

The quotient is equal to $1.0325*10^{-11}$

6 0

3 years ago

Please help me with this problem​

Please help me with this problem