Jalissa works 20 hours a week while she is attending college. She desides that she needs to put a little more time into her studies, so she reduces her hours by 15%. How many hours is Jalissa now working?'

Given:

The system of equations is

[tex]x+3y=42[/tex]       ...(i)

[tex]2x-y=14[/tex]        ...(ii)

To find:

The number that must be multiplied with the second equation to eliminate the y-variable.

Solution:

Coefficient of y variable in equation (i) is 3 and in equation (ii) is -1.

To eliminate y-variable the absolute value of coefficients of y-variables should be same.

So, we need to multiply the second equation by 3 to eliminate the y-variable

Multiplying equation (ii) by 3, we get

[tex]6x-3y=42[/tex]      ...(iii)

Adding (i) and (iii), we get

[tex]x+3y+6x-3y=42+42[/tex]

[tex]7x=84[/tex]

Divide both sides by 7.

[tex]x=12[/tex]

Put x=12 in (i).

[tex]12+3y=42[/tex]

[tex]3y=42-12[/tex]

[tex]3y=30[/tex]

Divide both sides by 10.

[tex]y=10[/tex]

Therefore, x=12 and y=10.

Answer:

Multiply the second equation by 3. The solution is x = 12, y = 10.

Step-by-step explanation:

Took test on edmentum/plato

Answer:

7.5

Step-by-step explanation:

or C ................

Answer:

B

Step-by-step explanation:

Answer:

slope=4

Step-by-step explanation:

m=y2-y1/x2-x1

4-(-4)=8

5-3=2

8/2=4

hope this helps :3

if it did pls mark brainliest

Answer:

y=-2x+19

Step-by-step explanation:

For lines like these, the slope is always defined as "the change in y over the change in x" or, in equation form:  m= [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex].

Now we have,

m= 3-7/8-6

m=-2. Since m=-2, the equation is y=-2x+b.

To find b, think about what your (x,y) points mean:

(6,7). When x of the line is 6, y of the line must be 7.

(8,3). When x of the line is 8, y of the line must be 3.

Substitute them to the equation  y=-2x+b.

You can use either (x,y) point you want..the answer will be the same:

(6,7). y=mx+b or 7=-2 × 6+b, or solving for b: b=7-(-2)(6). b=19.

(8,3). y=mx+b or 3=-2 × 8+b, or solving for b: b=3-(-2)(8). b=19.

So, the equation of the line that passes through the points

(6,7) and (8,3)  is  y=-2x+19.

Answer:

Step-by-step explanation:

x2 + 14x + 1

Answer:

Step-by-step explanation:

(x²+10x)+(4x−1)

= x² + 10x + 4x − 1

= x² + 14x - 1

Answer: x < 9

Step-by-step explanation: Actually, this is a LOT simpler than it seems.

So, looking at the problem, you know that the opposite value of x (opposite value is the number of spaces of a number away from 0), is less than 19 when you add it to 10. That said, |x| could be any rational number- whether positive or negative, as long as long as it equals less than 19 when added to 10. X could be -3, for example, because -3+10=7, which is <19. If, hypothetically, x were -3, then |x| would be 3, because -3 is 3 spaces from 0 (I just thought I'd explain it a little, because absolute value itself was confusing for me when I learned it at first).

Anyway, x could not be any number greater than 9 because than it would equal more than 19, and it can't be 9 because that wouldn't be less than 19. Does that make sense?

Answer:

62

Step-by-step explanation:

Answer:

2 w ^2 − 28 w + c

Step-by-step explanation:

That's what I got use math(way)to see it

Answer:

Step-by-step explanation:

No,

The digit 5 is in the thousandths place

So 0.125 = 125/1000

To reduce 125/1000, we'll divide each part by the GCF 125

125/125 = 1

1000/125 = 8

So 125/1000 = 1/8 meaning that 1/8 = 0.125

Answer: 17 to 15

Step-by-step explanation:

Answer:

1. 48a/24a³b²; domain {a ≠ 0 and b ≠ 0}  2. 15b³/24a³b² ; domain {a ≠ 0 and b ≠ 0}

Step-by-step explanation:

1. To have a denominator 24a³b², we multiply 2/a²b² by 24a/24a.

So, 2/a²b² × 24a/24a = 48a/24a³b². For this expression to the valid, the domain is a ≠ 0 and b ≠ 0

2. To have a denominator 24a³b², we multiply 5b/8a³ by 3b²/3b².

So, 5b/8a³ × 3b²/3b². = 15b³/24a³b². For this expression to the valid, the domain is a ≠ 0 and b ≠ 0

Answer:

Prob 150

Step-by-step explanation:

Answer:

y= 6x-5

Step-by-step explanation:

So you can plug it into the equation

y= mx + b

y= 6x-5

hope that helps

Answer:

Step-by-step explanation:

Given in the question,

AC ⊥ BC and CX ⊥ AB

m∠ACB = 90°

m∠ACX = 90° - m∠3

Now by applying the property of interior angle of triangle,

m∠CAX + m∠CXA + m∠ACX = 180°

m∠2 + 90° + (90°- m∠3) = 180°

m∠2 + 180° - m∠3 = 180°

m∠2 - m∠3 = 0

m∠2 = m∠3

Therefore, m∠2 ≅ m∠3.  

Answer:

she should preform division

Step-by-step explanation:

Answer:

Actually, it's C multiplication Cutty you can't be giving Wrong answers.

Step-by-step explanation:

It's C Multiplication because Were using the PEMDAS technique and this stands for

P- Parenthesis

E- Exponents

M- Multiplication

D- Division

A- Addition

S- Subtraction

So if you see in the Pemdas technique It will be C Multiplication.

Answer: (1) yes

Step-by-step explanation: if the last number doesn't repeat  it self

3. is no because the last numbers repeat it self

Answer:

i think the answer is -7/s

Step-by-step explanation:

Let's solve for n.

(−1s)(n)+12<19

Step 1: Add -12 to both sides.

−ns+12+−12<19+−12

−ns<7

Step 2: Divide both sides by -s.

−ns

−s

<

7

−s

n>

−7

s

Answer:

n>

−7

s

Answer:

The rate of change is: as x increases by 10, y increases by 30. In other words, the rate of change is +30

Step-by-step explanation:

When calculating rate of change you see how much the y increases/decreases each time the x increases/decreases as we see, each time the x goes up by 10 the y goes up by 30.

Answer:

5544 miles per hour

Step-by-step explanation:

5544 miles per hour, because 1 hour is 72 miles so x 77 hours is 5544 miles per hour.

Answer:

Step-by-step explanation:

Distance=speed* time

Given speed = 72 miles per hour

Time= 77 hour

So distance= 72x77 miles

= 5544 miles

Step-by-step explanation:

The decimal number 5.25 is equal to the fraction 21/4.

Answer:

Facts.

Step-by-step explanation:

Answer:

hope this will help you..

Answer:

0

Step-by-step explanation:

Using the cofunction identity

sin x = cos(90 - x), then

cos²31° - sin²59°

= sin²(90 - 31)° - sin²59°

= sin²59° - sin²59°

= 0

Answer:

11. a. -2, b. 1.5 12. a. 1/10 b. 1.2 meters c. 0 by using the formula for finding slope of (y2-y1)/(x2-x1) so (2-2)/(30-20) gives 0/10 and since anything divided by 0 is 0 (also by looking at the line which is flat there is no obvious change), 13. y = - 10x + 35

Step-by-step explanation:

Answer:

ithink B

Step-by-step explanation:

but I'm not really sure

Answer:

3x=15

Step-by-step explanation:

Here's what I found on google about the distributive property-

To “distribute” means to divide something or give a share or part of something. According to the distributive property, multiplying the sum of two or more addends by a number will give the same result as multiplying each addend individually by the number and then adding the products together.

Now for the math-

3(x+5)

distribute the numbers-  3(x)+3(5)

solve-  3*5=15

3x+15

Answer:

Ok

Step-by-step explanation:

I’ll help u

Answer:

2,3,5

Step-by-step explanation:

Let me know if i'm wrong

Answer:   B.   Bank   &   D.   Office    ( 2, 4 )

Explanation:  People who work in Consumer Services are usually ones having to do with working in finances. Some career examples would be Loan Counselors and Customer Service Representatives. Those other workplace options have nothing to do with careers in this path. This information is a summary of Edge's notes in the Career Explorations course.

I hope this helped !

Good luck <3