1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
charle [14.2K]
3 years ago
8

Sylvia earns $7 per hour at her afterschool job. One week she worked several hours and received a paycheck for $91. Write and so

lve an equation to find the number of hours in which Sylvia would earn $91.
Mathematics
1 answer:
Olegator [25]3 years ago
3 0
91=7x
X = 13

Let x equal the amount of hours she worked at the job.
You might be interested in
WILL GIVE BRAINLIEST!!
joja [24]

Answer:

#4

Step-by-step explanation:

4 0
3 years ago
Can anyone help?
SVEN [57.7K]

For the equation (2k + 1)x² + 2x = 10x - 6 to have two real and equal roots, the value of k = 5/6.

Since the equation is (2k + 1)x² + 2x = 10x - 6, we collect subtract 10x from both sides and add 6 to both sides.

So, we have (2k + 1)x² + 2x - 10x + 6 = 10x - 6 - 10x + 6

(2k + 1)x² - 8x + 6 = 0

For the equation, (2k + 1)x² + 2x = 10x - 6 to have two real and equal roots, this new equation (2k + 1)x² - 8x + 6 = 0 must also have two real and equal roots.

For the equation to have two real and equal roots, its discriminant, D = 0.

D = b² - 4ac where b = -8, a = 2k + 1 and c = 6.

So, D =  b² - 4ac

D =  (-8)² - 4 × (2k + 1) × 6 = 0

64 - 24(2k + 1) = 0

Dividing through by 8, we have

8 - 3(2k + 1) = 0

Expanding the bracket, we have

8 - 6k - 3 = 0

Collecting like terms, we have

-6k + 5 = 0

Subtracting 5 from both sides, we have

-6k = -5

Dividing through by -6, we have

k = -5/-6

k = 5/6

So, for the equation (2k + 1)x² + 2x = 10x - 6 to have two real and equal roots, the value of k = 5/6.

Learn more about quadratic equations here:

brainly.com/question/18162688

4 0
3 years ago
Margaret is thinking of a number. She says, “My number is odd. It is a factor of 36 and a multiple of 3” There are two possible
Novay_Z [31]

Answer:

3,9

Step-by-step explanation:

Factors of 36 = 1,2,3,4,6,9,12,18,36

Those factors which are odd = 1,3,9

Odd Factors which are multiple of 3 = 3,9

So, these are the two numbers Margret might be thinking of.

4 0
3 years ago
If f(x) = x is changed to g(x) = -f(x + 3) + 2, how is the graph transformed?
Dvinal [7]

Answer:

f(x) is flipped, and each point is moved 3 units to the left and 2 units up

Step-by-step explanation:

8 0
3 years ago
Solve systems of equations by algebraically x-2y=7 <br> 2x+5y =5
Natali [406]

Answer:

(5,-1) or x=5 y=-1

Step-by-step explanation:

I used the substitution method to solve this!

<em>1. Pick one of your equations and solve for one of the variables. I chose the first equation and solved for x.</em>

x-2y=7

(Move the -2y to the other side of the equation in order to get the x by itself. You do the opposite, so it becomes +2y.)

x=2y+7

<em>2. Now take your second equation and plug in what you got for x into the x variable.</em>

2(2y+7)+5y=5

(Multiple 2 by everything inside of the parentheses.)

4y+14+5y=5

(We want to get the y by itself, so move the 14 to the other side.)

4y+5y=-14+5

(Combine all the like terms.)

9y=-9

(Divide the 9 from the y. What you do to one side you must do to the other.)

y=-1

<em>3. Since you have one variable solved for. Now take the first equation and plug in your y.</em>

x-2(-1)=7

(Multiple -2 by -1)

x+2=7

(Move the 2 to the other side in order to get the x by itself.)

x=5

<em>4. If needed, plug in your x and y values into the equations in order to check your answer.</em>

Hope this could help!

8 0
3 years ago
Read 2 more answers
Other questions:
  • A statistician believes that women received more bachelor's degrees than men did last year. To test this claim, she selects coll
    11·1 answer
  • Which of the following is equivalent to the expression (3ab)(-5ab)?
    14·1 answer
  • Answers to question 1, a,b,c,d,e and f
    12·1 answer
  • Lester's car can go 15.4 miles on 1 gallon of gas. How far can he go on 0.7 gallon?
    5·2 answers
  • What is the inverse of the function f(x)=2x-10
    7·2 answers
  • there are 74 children at a camp . there are 38 girls. the rest are boys. how many boys are at the camp
    6·2 answers
  • lindsay is very excited to be getting a great deal on an iPad. It was originally $500, but she will only be paying $325. What pe
    8·2 answers
  • Solve for x. Round to the nearest tenth, if necessary.
    11·1 answer
  • 29 mm<br> 120 mm<br> What is the perimeter?<br> millimeters
    7·1 answer
  • Given h(x)=-x-4, find h (-6)
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!