Find the measure of 46.

Write the equation of the line that has an x-intercept of -3 and passes through the point (-3,7)

Eddi Din [679]

Answer:

x=-3

Step-by-step explanation:

Answer choice A is a vertical line through the the x-axis crossing through -3. It has an x-intercept of -3.

Answer choice B is a horizontal line through the y-axis crossing through -3. It has no x-intercpet.

Answer choice C is a horizontal line through the y-axis crossing through 7. It has no x-intercept.

Only A has an x-intercept of -3.

4 0

3 years ago

Kevin is looking at two brands of washing machines. Between water and electricity, a Brand C washer uses about $0.65 per load, a

Sholpan [36]

Answer:

a. $22.80

Step-by-step explanation:

Given :

Brand C washer uses about $0.65 per load

Brand D washer uses about $0.27 per load

Kevin averages about five loads of laundry per month.

To Find :how much more would the utility costs for a Brand C washer be than the utility costs for a Brand D washer after one year?

Solution :

The utility cost of Brand C washer per load = $0.65

Since she uses 5 loads per month

So, she uses loads in 12 months(=1year) = 5*12 =60 loads

Now cost of 60 loads is 60*0.65 = $39

Thus the utility cost of Brand C for 1 year is $39

The utility cost of Brand D washer per load = $0.27

Since she uses 5 loads per month

So, she uses loads in 12 months(=1year) = 5*12 =60 loads

Now cost of 60 loads is 60*0.27 = $16.2

Thus the utility cost of Brand D for 1 year is $16.2

The difference between their 1 year costs = $39-$16.2 = $22.8

Thus the utility costs for a Brand C washer will be $22.8 more than the utility costs for a Brand D washer.

Hence Option A is correct.

8 0

3 years ago

Read 2 more answers

I am having trouble with this question: 2/3 (3x−6)= 3/4 (2x+8)<br><br>find x

aleksandrvk [35]

Answer:

X=24

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

student enrollment at a local school is concerning the community because the number of students has dropped to 504 which is a 20

Norma-Jean [14]

Answer:

The answer is 630 students

Step-by-step explanation:

For this case, we have 504 students and the student enrollment has decrease 20%, which mean 504 is the 80% of the total student enrollment of the previous year.

$100 - 20 = 80$ %

This is a direct proportion problem. As shown bellow:

504 -> 80%

x -> 100%

For solving this we use the Mathematical Rule of Three, a method of having three numbers to help calculate the unknown.

b -> c

x -> a

The algorithm for rule of three is the following:

$x = \frac{a * b}{c} \\\\x= \frac{504*100}{80} =\frac{50400}{80}=630\\ \\x=630$

8 0

3 years ago

Pls help i need to make a good grade on this thing im doing

Alla [95]

Hi there!

it is y=80x

As you can see if x=80y then if we say that y=5 then x would be 400. Yiu can also tell that the if the x=5 then the y would be 500 so this wouldn’t make sense.

For B, you can tell that if x is 2 then y would be 160 which is correct if you can see..

Now we know that is B but let find out the others...

If x=y+80 then y always have to change... if x was 2 then the y would be 89 and if the x was 3 than y would be 160.

D is also the same as A but it’s the opposite.. y would be 160 then x would be 2. When y turned into 240 then x would be 3. It changes just like A.

Therefore, the equation that best represent this relationship is y=80x..

8 0

3 years ago