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lara31 [8.8K]
4 years ago
6

Please help!! ME NEED ANSWERR!!!!

Mathematics
2 answers:
irina [24]4 years ago
8 0
Brveceecexexexecrvtb
Alex17521 [72]4 years ago
7 0

Answer:

Step-by-step explanation:

255/30= 8.5

85x8.5= 722.5

it will cost $722.5 for 85 students to watch the play

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Solve k^2 + 13k + 30 = 0
kogti [31]
K² + 13k + 30 = 0

This is a quadratic equation. Let's attempt solving it by factorization.

Coefficient of k² = 1, last term = 30

Multiply these two together 1*30 = 30

We think of two numbers that multiply to give 30 and add to give the middle term 13.

The two numbers are 3 and 10.

3*10 = 30,   3 + 10 = 13.

we replace the 13k with 3k + 10k

 k² + 13k + 30 = 0

k² + 3k + 10k + 30 = 0

k(k + 3) + 10(k + 3) = 0

(k + 3)(k + 10) = 0

(k + 3) = 0 or  (k + 10) = 0

k = 0 - 3  or  k = 0 - 10

k = -3, or -10

I hope this helps.
4 0
4 years ago
WILL GIVE BRAINLIEST AND 20 POINTS
Pachacha [2.7K]

Answer:

The fourth opition!

Step-by-step explanation:

180-2(72)=x. The reason being it says TWO angels of 72 and if you times that by two and subtract by 180 youll get the missing angle!!

4 0
3 years ago
Read 2 more answers
I need help on system of linear equations
jasenka [17]
What is your problem you are having?
6 0
4 years ago
Which graph can be used to find the solution for the equation 4x + 2 = x + 3?
Marat540 [252]

Answer:

option C

Step-by-step explanation:

to find the solution for the equation 4x + 2 = x + 3, graph the equations

y= 4x+2  and y=x+3

Lets make a table for each equation

x          y= 4x+2

-1          4(-1) + 2= -4+2 = -2

0           4(0) + 2= 2

1             4(1) + 2= 6

plot all the points on graph

Lets make table for second equation

x          y= x+3

-1          -1+3 = 2

0           0+3 = 3

1             1+3 = 4

Plot the point on the graph and make a line

option C is correct

8 0
3 years ago
Read 2 more answers
What is the cosine ratio of <br> A. 15/8<br> B. 15/17<br> C. 8/15<br> D.8/17
Aleksandr-060686 [28]

Answer:

your answer will be option d

Step-by-step explanation:

because cosine =base/hypotenus

and here 8/17

hope ur help

5 0
2 years ago
Read 2 more answers
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