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2 years ago

Help me, please ( 10 points )

Mathematics

2 answers:

Aloiza [94]2 years ago

4 0

90 degrees is a right angle and 180 is a straight line over 90 is an obtuse and and 45 degrees or lower is an acute angle

MatroZZZ [7]2 years ago

3 0

90 degrees because A is a right angel

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A local bowling alley charges $4.50 to play one game and $4 to rent one pair of shoes. The expression 4.5g + 4 represents the to

Dmitry_Shevchenko [17]

Answer:

22$

Step-by-step explanation:

8 0

3 years ago

Solve a,b,c,d please

sdas [7]

For each, replace x with the number in the parenthaseses

a.
$f(2.5)=\frac{1}{2.5-2}=\frac{1}{0.5}=2$

b.
$f(1.75)=\frac{1}{1.75-2}=\frac{1}{-0.25}=-4$

c.
$f(2)=\frac{1}{2-2}=\frac{1}{0}=undefined$
division by 0 is not allowed so it is undefined at the point

d. because division by 0 is not allowed

7 0

3 years ago

Hey guys please solve this for me!!

Leni [432]

Answer:

1.) C = 76.1

2.) C = 5.8

Step-by-step explanation:

5 0

2 years ago

Solve the system of equations,

lorasvet [3.4K]

Answer:

x = 21/2

y = -19/2

Step-by-step explanation:

5x - 17 = 4y + 7x

5x - 7x - 4y = 17

-2x - 4y = 17

6x + 8y = - 13

-2x - 4y = 17 | ×2 |

6x + 8y = - 13 | ×1 |

-4x - 8y = 34

6x + 8y = - 13

___________+

2x = 21

x = 21/2

-2x - 4y = 17

-2(21/2) - 4y = 17

-21 - 4y = 17

-4y = 17 + 21

-4y = 38

y = -38/4

y = -19/2

7 0

2 years ago

The sum of a number and 8 is 15

kodGreya [7K]

You mean, what is this number?

we can rephrase it like this: the sum of a number x and 8 is 15

which is:

x+8=15

we subtract 8 from both sides and we get
x=7

so the answer is 7.

3 0

3 years ago

Read 2 more answers