Ask question

Ask question

All categories

3 years ago

9

Please help 8th grade math (WILL GIVE BRAINLIEST AND THANKS)

1 answer:

tatyana61 [14]3 years ago

8 0

Wow there's a lot of questions there.
Pythagorean Theorem states that in a right triangle, the
hypotenuse^2 = leg1^2 + leg2^2
If the hypotenuse isn't known use the above formula.
If a leg isn't known, use
hypotenuse^2 = leg1^2 + leg2^2
leg1^2 = hypotenuse^2 - leg2^2

You might be interested in

Which of the following is an arithmetic sequence?

Mashcka [7]

The following answer would be D because I’m guessing and I need the answers too sorry

6 0

3 years ago

Find the product of 3 and the linear equation, and solve for both equations for y.

krok68 [10]

Answer:

Part 1) The product of 3 and 2y-4x=8 is $6y-12x=24$

Part 2) The original equation in slope intercept form is $y=2x+4$

Part 3) The new equation in slope intercept form is $y=2x+4$

Step-by-step explanation:

we have

$2y-4x=8$

step 1

Find out the product of 3 and 2y-4x=8

Multiply both sides by 3

$3(2y-4x)=3(8)$

Apply distributive property both sides

$6y-12x=24$

step 2

Find out the original equation in slope intercept form

The equation of the line in slope intercept form is

$y=mx+b$

we have

$2y-4x=8$

Solve for y

That means ----> Isolate the variable y

Adds 4x both sides

$2y=4x+8$

Divide by 2 both sides

$y=(4x+8)/2$

Simplify

$y=2x+4$

step 3

Find out the new equation in slope intercept form

The equation of the line in slope intercept form is

$y=mx+b$

we have

$6y-12x=24$

Solve for y

That means ----> Isolate the variable y

Adds 12x both sides

$6y=12x+24$

Divide by 6 both sides

$y=(12x+24)/6$

Simplify

$y=2x+4$

8 0

4 years ago

Miss McIntosh leaves a $6.75 tip for her waiter. If her tip was 20% of the cost of her meal, what was the cost of her meal?

zalisa [80]

Answer: 72$

Step-by-step explanation:

because

5 0

3 years ago

The radius of a circle measures 15 ft. What is the circumference of the circle?

Pie

Answer:

$\boxed {\tt 94.2 \ feet}$

Step-by-step explanation:

The circumference of a circle can be found using the following formula:

$c= \pi d$

where d is the diameter. We are given the radius, so let's find the diameter.

The diameter is twice the radius.

$d=2r$

The radius is 15 feet.

$d= 2 * 15 \ ft$

Multiply.

$d= 30 \ ft$

Now we know the diameter. Substitute 30 feet in for d.

$c= \pi d$

$c=\pi * 30 \ ft$

We are using 3.14 for pi, so substitute it in.

$c=3.14 * 30 \ ft$

Multiply.

$c= 94.2 \ ft$

The circumference of the circle is 94.2 feet.

8 0

4 years ago

Read 2 more answers

When you divide the number of permutations of 11 objects taken 3 at a time by 3!, you will get the number of combinations of 11

Sloan [31]

Answer:

Yes

Step-by-step explanation:

Permutation :

nPr = n! ÷ (n - r)!

nCr = n! ÷ (n-r)!r!

11 objects taken 3 at a time :

11P3 = 11! ÷ (11 - 3)!

11P3 = 11! / 8!

11P3 = (11 * 10 * 9 )

11P3 = 990

Dividing by 3!

3! = 3*2*1 = 6

= 990 / 6

= 165

For combination :

11C3 = 11! ÷ 8!3!

11C3 = (11 * 10 * 9) / (3 * 2 * 1)

11C3 = 990 / 6

11C3

4 0

3 years ago