MATHEMATICS HIGH SCHOOL

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what is the slope intercept form of (-1,8) and (3,6)

Answers

Answer 1
Answer:

Answer: y = 1/2x+15/2

Step-by-step explanation:

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How can I learn elimination better?

Answers

Best thing I think you should do is to go to your teacher for clarification of any doubts and practise as many example and show it to your teacher or anyone who knows it better for approval.

To be able to eliminate, you have to make a variable have the same COEFFICIENTS but OPPOSITE SIGNS. Then solve for the other ( non eliminated) variable. After that, substitute its value to the original equation and solve now for the eliminated variable.

What is the elapsed time between 11:50 a.m. and 4:05 p.m.?4 hours and 45 minutes
15 hours and 15 minutes
5 hours and 15 minutes
4 hours and 15 minutes

Answers

If you would like to find the elapsed time between 11:50 a.m. and 4:05 p.m., you can calculate this using the following steps:

12:00 p.m. - 11:50 a.m. = 0:10
12:00 p.m. + 4:05 p.m. = 4:05

0:10 + 4:05 = 4:15 = 4 hours and 15 minutes

The correct result would be 4 hours and 15 minutes.

Answer:

4 hours and 15 minutes

Step-by-step explanation:

Amanda’s dad is twice as old as she is today. The sum of their ages is 66. Find the ages of Amanda and her dad.

Answers

Let amanda's age be x and her dad's age be y.

Amanda’s dad is twice as old as she,  therefore 2x=y

The sum of their ages is 66, therefore x+y=66

x+y=66

2x=y,

substitute.

2x+x=66

3x=66

Divide.

x=22.

plug it back in, 22+y=66, y=44.

Amanda's age is 22 and her dad's age is 44.

One aftemoon 10 inches of snow falls in 1 1/4 hours. At this rate, how many inches of snow fall in 1 hour?inch(es) per hour

Answers

Answer:

8

Step-by-step explanation:

10 divided by 1 1/4 = 8

A right triangle has legs with lengths 20 cm and 21 cm.What is the length of the hypotenuse?

Answers

The length of the hypotenuse of the given right-angled triangle is 29 cm.

What is the hypotenuse?

The longest side of a right-angled triangle, i.e. the side opposite the right angle, is called the hypotenuse in geometry.

Pythagorean theorem :

If p be the length of the hypotenuse of a right-angled triangle, q and r be the lengths of the other two sides, then

p² = q² + r²

How to solve this problem?

Here, the lengths of the other two sides of the given right-angled triangle are 20 cm and 21 cm. Put these values in the above theorem to get the desired result.

Now, p² = (20)² + (21)²

             = 400 + 441

             = 841

i.e. p = √(841)

         = 29

Therefore the length of the hypotenuse is 29 cm.

Know more about hypotenuse here -

brainly.com/question/13644489

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c²=a²+b²
c²=20²+21²=400+441=841
c²=841
c=√841
c=29
Answer: 29 cm

Johnny Barber took golf lessons. His clubs cost $425, balls cost $12.50, shoes cost $49.50, his golf shirt was $37, and his glove was on sale for $19.95. He paid 5% sales tax on his purchase. His lessons cost $20.00 per lesson for 12 lessons. What is the total cost of his purchase and lessons?A. $811.15
B. $780.70
C. $603.15

Answers

Answer:

The total  cost of the Johnny Barber purchase and lessons is $811.15 .

Option (A) is correct .

Step-by-step explanation:

As given

Johnny Barber took golf lessons.

Johnny Barber clubs cost $425, balls cost $12.50, shoes cost $49.50, his golf shirt was $37, and his glove was on sale for $19.95.

Total purchase cost =  Johnny clubs cost +  Balls cost + Shoes cost + Golf shirt cost + Glove cost

Put all the values in the above

Total purchase cost =  425 +  12.50 + 49.50 + 37 + 19.95

                                 = $ 543.95

As given

Johnny Barber paid 5% sales tax on his purchase.  

5% is written in the decimal form

= 0.05

Thus

Sales tax = 0.05 × Total purchase cost

               = 0.05 × 543.95

               = $ 27.1975

As given

Johnny Barber  lessons cost $20.00 per lesson for 12 lessons.

Total cost of the lesson = 12 × Cost per lesson

                                        = 12 × 20

                                        = $ 240

Thus

Total cost of the Johnny Barber purchase and lessons = Total purchase cost + Sales tax + Total cost of the lessons

Put all the values in the above

Total cost of the Johnny Barber purchase and lessons =  $ 543.95  + $ 27.1975  + $ 240

Total cost of the Johnny Barber purchase and lessons =  $ 811.1475

Total cost of the Johnny Barber purchase and lessons =  $ 811.15 (Approx)  

Therefore the total  cost of the Johnny Barber purchase and lessons is $811.15 .

Option (A) is correct .                                                        
425+49.50+12.50+37+19.95= $543.95

543.95x0.05= $27.20        total= $571.15

12 lessons x $20= $240

grand total of $ 811.15
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