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Tcecarenko [31]
3 years ago
10

What is the slope of the line through (1, -1) and (5, 7)?

Mathematics
2 answers:
harkovskaia [24]3 years ago
7 0

Answer:

2

Step-by-step explanation:

The equation for slope is y2 - y1 / x2 - x1. So 7 - -1 / 5 - 1 equals 8 / 4. 8 / 4 is 2.

Rasek [7]3 years ago
5 0

Answer:2

Step-by-step

7-(-1)/5-1=8/4 =2

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David made a class banner out of a large rectangular piece of paper. He cut a
Irina18 [472]

Answer:

100 in²

Step-by-step explanation:

The area of the banner is equal to the area of the initial rectangle minus the area of the cutout triangle.

The rectangle has a height of 8 inches and width of 14 inches, so its area is:

A = (8 in) (14 in) = 112 in²

The triangle has a base of 8 inches and a height of 3 inches, so its area is:

A = ½ (8 in) (3 in) = 12 in²

So the area of the banner is 112 in² − 12 in² = 100 in².

6 0
3 years ago
Enny White is shopping for CDs. She decides to purchase 3 movie soundtracks. The music store has 7 different movie soundtracks i
zubka84 [21]

Answer:

35\ ways

Step-by-step explanation:

we know that

<u><em>Combinations</em></u> are a way to calculate the total outcomes of an event where order of the outcomes does not matter.

To calculate combinations, we will use the formula

C(n,r)=\frac{n!}{r!(n-r)!}

where

n represents the total number of items

r represents the number of items being chosen at a time.

In this problem

n=7\\r=3

substitute

C(7,3)=\frac{7!}{3!(7-3)!}\\\\C(7,3)=\frac{7!}{3!(4)!}

simplify

C(7,3)=\frac{(7)(6)(5)4!}{3!(4)!}

C(7,3)=\frac{(7)(6)(5)}{3!}

C(7,3)=\frac{(7)(6)(5)}{(3)(2)(1)}

C(7,3)=35\ ways

6 0
3 years ago
What is the correct step to solve this equation?
ehidna [41]
Answer: C add 4 to both sides
I hope this helps you !
6 0
3 years ago
Read 2 more answers
Please help.. (This is meant to be infinite, so I can't use a calculator)
Alex17521 [72]

Answer:

5

Step-by-step explanation:

→ Let x = √20 + √20 .....

x

→ Square both sides

x² = 20 + √20 +√20 + √20

→ Replace √20 +√20 + √20 with x

x² = 20 + x

→ Move everything to the left hand side

x² - 20 - x = 0

→ Factorise

( x + 4 ) ( x - 5 )

→ Solve

x = -4 , 5

→ Discard negative result

x = 5

7 0
2 years ago
Read 2 more answers
How do you solve x3 (y-5) (x-8) (the numbers next to the variables (letters) are supposed to be exponents)
Galina-37 [17]
Y^-5
x^-5
because you have to put together all the x and then put all the y's together
7 0
4 years ago
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