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2 years ago

The cost of having someone come to your house and clean for x number of hours is represented by the

Mathematics

1 answer:

Verdich [7]2 years ago

8 0

Answer:

$140

Step-by-step explanation:

When a variable is placed directly after the coefficient (the number) with no symbols between them, we are supposed to multiply the two together. The variable x represents the number of hours this person will spend cleaning your house, and we are trying to find the cost of 4 hours of cleaning. Therefore, we will substitute 4 for x:

$f(x) = 35x \\ f(x) = 35(4)$

Then, we multiply 35 by 4:

$f(x) = 35(4) \\ f(x) = 140$

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you have a 5-inch by 7-inch picture that you framed. When you hung the picture, you found that the entire area is 69.56 in. What

Montano1993 [528]

Answer:

d. 2.4 in

Step-by-step explanation:

So initially w/o frame the area was 5 x 7 = 35 sq in.

Now we have to add the width of the frame to both dimensions.

(5+w)(7+w) = 69.56 sq in

35 + 7w + 5w + w² = 69.56

w² + 12w + 35 = 69.56

w² + 12w - 34.56 = 0

I use the quadratic formula to solve this (x = -b±√b²-4ac / 2a). I cheat by using a quadratic program on the calculator :,)

w = 2.4

w = -14.4

Since we can't have a negative width, the answer must be w = 2.4 inches.

You can also just plug the answer choices one-by-one into the calculator with guess-and-check because this is multiple choice.

4 0

3 years ago

Read 2 more answers

B. cups of water fill 14 Identical water bottles. How many cups fill each bottle?

11111nata11111 [884]

Answer:

bro how many cups fill 14 indentical water bottles

Step-by-step explanation:

question is in complete

or if I take it as x then x/14

hope it helps you

mark me as brainlist

7 0

2 years ago

In a class 30 of students, 13 have a cat and 7 have a dog. There are 4 students who

AVprozaik [17]

Answer:

4/13

Step-by-step explanation:

"given that they have a cat?" means you are referring to only the students that have cats(that is the number on the bottom)

i am very bad at explaining math lol

7 0

2 years ago

Timothy deposited $2,780.20 in a savings account that earns 4.3% simple interest. What will Timothy’s account balance be in 7 mo

julia-pushkina [17]

Keeping in mind that, there are 12 months in a year, therefore, 7 months is really just 7/12 of a year.

$\bf \qquad \textit{Simple Interest Earned Amount}\\\\
A=P(1+rt)\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{original amount deposited}\to& \$2780.20\\
r=rate\to 4.3\%\to \frac{4.3}{100}\to &0.043\\
t=years\to &\frac{7}{12}
\end{cases}
\\\\\\
A=2780.20\left(1+0.043\cdot \frac{7}{12} \right)$

7 0

2 years ago

Read 2 more answers

Sunayana took a novel book from her school library. She

hram777 [196]

Answer:

4.1% ororor

Step-by-step explanation:

1/6 = 16.7%

3/8 = 37.5%

5/12 = 41.7%

= 95.9%

100% - 95.9% = 4.1%

8 0

2 years ago