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Montano1993 [528]
3 years ago
13

Please help well mark brain please

Mathematics
2 answers:
Rudik [331]3 years ago
8 0

Answer:

b

Step-by-step explanation:

allochka39001 [22]3 years ago
4 0

Answer:

10n+12b, C

Step-by-step explanation:

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PLEASE HELP 20 POINTS<br> solve the system of equations y=-5x-7 and -4x-3y=-1 by substitution.
Ainat [17]

Answer:

Solution: x = -2; y = 3 or (-2, 3)

Step-by-step explanation:

<u>Equation 1:</u>  y = -5x - 7  

<u>Equation 2:</u> -4x - 3y = -1

Substitute the value of y in Equation 1 into the Equation 2:

-4x - 3(-5x - 7)  = -1

-4x +15x + 21 = -1

Combine like terms:

11x + 21 =  - 1

Subtract 21 from both sides:

11x + 21 - 21 =  - 1 - 21

11x = -22

Divide both sides by 11 to solve for x:

11x/11 = -22/11

x = -2

Now that we have the value for x, substitute x = 2 into Equation 2 to solve for y:

-4x - 3y = -1

-4(-2) - 3y = -1

8 - 3y = -1

Subtract 8 from both sides:

8 - 8 - 3y = -1 - 8

-3y = -9

Divide both sides by -3 to solve for y:

-3y/-3 = -9/-3

y = 3

Therefore, the solution to the given systems of linear equations is:

x = -2; y = 3 or (-2, 3)

Please mark my answers as the Brainliest if you find this helpful :)

7 0
3 years ago
1/3into a percent and a decimal
jeka57 [31]

Answer:

33% or .33

Step-by-step explanation:

Divide 1/3 = .3333 (repeating). I would round to the nearest hundreths place:

1/3 = .33

For the precentage, multiple 0.33 by 100:

100 * 0.33 = 33%

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2 years ago
Help please I'll give brainliest and a vote!!!
fredd [130]

Answer:

Quality Plumbing charges more per hour.

In the graph, you can see that it would cost $150 for their work plus $100 per hour based on the slope of the line.

A Plus Plumbing charges $140 for their work plus $60 per hour.

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3 years ago
Solve for x<br> PLEASE HELP ME !!!
Oliga [24]

Answer:

360-(26x2)

=360-52

=308

15x  - 26 = 308 \\ 15x = 308 + 26 \\ 15x = 334 \\ x = 334 \div 15 \\ x = 22.27 \: or \:  \frac{334}{15}

4 0
3 years ago
Read 2 more answers
How can you identify a geometric sequence as an equation?​
Kipish [7]
The r-value, or common ratio, can be calculated by dividing any two consecutive terms in a geometric sequence.
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