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
Hatshy [7]
3 years ago
5

Kristy makes 5$ per hour babysitting and 12$ per hour giving music lessons. One weekend, she worked a total of 18 hours and made

$139.00. How many hours did she spend babysitting? Write your answer in complete sentences.
Mathematics
1 answer:
MariettaO [177]3 years ago
3 0
Let Karen works x hours baby sitting
So, she worked (18-x) hours giving music lessons
So,
According to question
5x + 12(18-x)=139
This gives
7*x=77
x=11
So,
<span>Karen worked <em>11 hours baby sitting </em>and (18-11)=7 hours giving music lessons</span>
You might be interested in
(-6x3-4x2-8)+(x3-x2-9x+4) add together and simply
Aleksandr [31]

Answer:

-5x³ -5x² -9x - 4

Step-by-step explanation:

(-6x³-4x²-8)+(x³-x²-9x+4)

Add the like terms.

-6x³ and x³ are like terms. -6x³ + x³ = -5x³

-4x² and -x² are like terms. -4x² - x² = -5x²

-8 and 4 are like terms. -8 + 4 = -4

-6x³-4x²-8 +x³-x²-9x+4 = -5x³ -5x² -9x - 4

6 0
3 years ago
Can u help with these two
Artemon [7]
The volume of a rectangular prism can be given by the form
V= b*h*w

you know Volume, base, and height but you dont know width

so divide b and h to both sides
\frac{V}{b*h} = w
and you cna solve for width

now for 6.
dividing by a number is the same as multiplying by its reciprocal

n \div 6  = n * \frac{1}{6}
8 0
3 years ago
Read 2 more answers
(9+4a)+(4+3c)=? ​(Simplify your​ answer.)
mr Goodwill [35]

Answer:

= 4a + 3c + 13

Step-by-step explanation:

(9+4a)+(4+3c)

= 9 + 4a + 4 + 3c

= 4a + 3c + 13

3 0
3 years ago
Read 2 more answers
The ratio of boys to girls in a class is 3:4. There are 35 students in the class. How many students are boys?
cricket20 [7]

Answer:

15 boys and 20 girls

Step-by-step explanation:

1. Since we cant simplify 3:4 we will leave it just like that.

2. 3x+4x=35

3. We add them both to give us 7x=35

4. We divide by 7 to get x by itself which results in 35/7=5.

x=5

5. Now we found x we can create 2 seperate soulutions:

3(5)=

and 4(5)=

Therefore there are 15 boys and 20 girls in the class. This makes sense because 15/20 reduced is 3 over 4.

6 0
3 years ago
Mario simplified the expression (4 z Superscript 8 Baseline) Superscript negative 3 as shown. (4 z Superscript 8 Baseline) Super
GREYUIT [131]

Answer:

Step-by-step explanation:

Given the expression (4z^8)^{-3}, to evaluate this, we will use one of the law of indices as shown;

(a^m)^n = a^{mn}

4^{-3} * z^{8*-3}

= \frac{1}{4^3} * z^{-24}\\ \\= \frac{1}{64} * \frac{1}{z^{24}}\\  \\= \frac{1}{64z^{24}}

Mario's error was that she did not raise the value of 4 to the power of -3. She only raised z^8 to the power of -3 when it is supposed to affect both 4 and z^8

8 0
3 years ago
Other questions:
  • Find the average of 60 75 88 and 93
    14·1 answer
  • 15 cars containing a total of 60 people
    8·1 answer
  • A car is traveling at 60 kilometers per hour how many meters per second is that
    12·1 answer
  • In the past, 35% of the students at ABC University were in the Business College, 35% of the students were in the Liberal Arts Co
    6·1 answer
  • Solve each equation
    6·2 answers
  • A rectangle is 1 cm more than twice its width. Find the dimensions of the rectangle if it’s area is 45cm.
    11·1 answer
  • Use order of operations to solve the equation
    11·1 answer
  • Find the equation of the line with x-intercept 4 and y-intercept -1 in slope-intercept<br> form.
    11·1 answer
  • Line c passes through points (1, 14) and (7, 7). Line d is perpendicular to c. What is the slope of line d?
    11·1 answer
  • The line L passes through the points (5, -5) and (1, 2).<br> Find the gradient of line L.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!