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
katrin2010 [14]
3 years ago
5

An exterminator charges $80 to visit a home and $35 to spray each room. If the total

Mathematics
1 answer:
mixas84 [53]3 years ago
3 0
Your variable is r for the number of rooms

So your equation is 395= 35*r + 80

First subtract 80 from both sides of the equation

315 = 35r

Next divide 35 from both sides of the equation

And your final answer is 9 rooms in total he sprayed.

Total cost = 35(#ofrooms) + 80

You might be interested in
According to a recent​ study, 9.3​% of high school dropouts are​ 16- to​ 17-year-olds. In​ addition, 6.4​% of high school dropou
Finger [1]

Answer:

0.688 or 68.8%

Step-by-step explanation:

Percentage of high school dropouts = P(D) = 9.3% = 0.093

Percentage of high school dropouts who are white = P(D \cap W) = 6.4% = 0.064

We need to find the probability that a randomly selected dropout is​ white, given that he or she is 16 to 17 years​ old. This is conditional probability which can be expressed as: P(W | D)

Using the formula of conditional probability, we ca write:

P(W | D)=\frac{P(W \cap D)}{P(D)}

Using the values, we get:

P( W | D) = \frac{0.064}{0.093} = 0.688

Therefore, the probability that a randomly selected dropout is​ white, given that he or she is 16 to 17 years​ old is 0.688 or 68.8%

4 0
3 years ago
Joe has 16 pounds of fertilizer for his three gardens. He uses 8/3 of the fertilizer in his first garden and 1/4 of the fertiliz
Natasha2012 [34]

Answer:

3/8

Step-by-step explanation:

3 0
3 years ago
X = 1, 2, 3 , 4 ,5
Vera_Pavlovna [14]
X goes by 1s

And y goes by 3s
3 0
3 years ago
Read 2 more answers
one teacher wants to give each student 7/8 of a slice of pizza. If the teacher has 7 slices of pizza then how many students will
Crazy boy [7]

Answer:

The teacher can hand out pizza to 8 students.

Step-by-step explanation:

To find how many slices of pizza the teacher can hand out , you can divide 7 by 7/8 and round down the nearest whole number.

7 ÷ 7/8 = 8

8 is already a whole number. No need to round down.

The teacher can hand out pizza to 8 students.

4 0
3 years ago
Read 2 more answers
Am i correct? calculus
Advocard [28]
Check the picture below.

now, the "x" is a constant, the rocket is going up, so "y" is changing and so is the angle, but "x" is always just 15 feet from the observer.  That matters because the derivative of a constant is zero.

now, those are the values when the rocket is 30 feet up above.

\bf tan(\theta )=\cfrac{y}{x}\implies tan(\theta )=\cfrac{y}{15}\implies tan(\theta )=\cfrac{1}{15}\cdot y
\\\\\\
\stackrel{chain~rule}{sec^2(\theta )\cfrac{d\theta }{dt}}=\cfrac{1}{15}\cdot \cfrac{dy}{dt}\implies \cfrac{1}{cos^2(\theta )}\cdot\cfrac{d\theta }{dt}=\cfrac{1}{15}\cdot \cfrac{dy}{dt}
\\\\\\
\boxed{\cfrac{d\theta }{dt}=\cfrac{cos^2(\theta )\frac{dy}{dt}}{15}}\\\\
-------------------------------\\\\


\bf cos(\theta )=\cfrac{adjacent}{hypotenuse}\implies cos(\theta )=\cfrac{15}{15\sqrt{5}}\implies cos(\theta )=\cfrac{1}{\sqrt{5}}\\\\
-------------------------------\\\\
\cfrac{d\theta }{dt}=\cfrac{\left( \frac{1}{\sqrt{5}} \right)^2\cdot 11}{15}\implies \cfrac{d\theta }{dt}=\cfrac{\frac{1}{5}\cdot 11}{15}\implies \cfrac{d\theta }{dt}=\cfrac{\frac{11}{5}}{15}\implies \cfrac{d\theta }{dt}=\cfrac{11}{5}\cdot \cfrac{1}{15}
\\\\\\
\cfrac{d\theta }{dt}=\cfrac{11}{75}

8 0
3 years ago
Other questions:
  • If Mitchell ate 45 hotdogs in 3 minutes at the annual hot dog eating contest. What is Mitchell’s unit rate?
    8·2 answers
  • Solve 2y + 12 < 42 ???
    7·1 answer
  • Which of he following ratios doesn't make a proportion
    15·1 answer
  • 3. Complete the comparison: 3+ 7 &gt; ?<br> A. 7 + 3<br> B. 10 - 2<br> C. 8 + 2<br> D. 9+4
    15·2 answers
  • Joe Jay purchased a new colonial home for $260,000, putting down 20%. He decided to use Loyal Bank for his mortgage. They were o
    6·1 answer
  • June made 18 liters of fruit lunch for a brirthday party.One third of the lunch was orange juice,4 liters of the lunch was pinea
    12·1 answer
  • the number of words Sylvia types varies directly with the amount of time she spends typing. If Sylvia types 100 words in 2.5 min
    8·1 answer
  • What is the answer to this question 0.20×400
    15·1 answer
  • What is the sum of LuAnn's three cards?<br> first card: -12<br> second card: 3<br> third card: -5
    12·2 answers
  • What is the area of circular ground having the circumference 88m?​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!