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cricket20 [7]
3 years ago
8

A window washer cleaned 38 windows in 2 hours. At this rate, how many windows did he clean in 7 hours?

Mathematics
2 answers:
andriy [413]3 years ago
6 0

Answer:

Step-by-step explanation:

38/2=19x7=133

Kryger [21]3 years ago
3 0

Answer:

I believe its 19 times 7 which is 133. I did this in my head so correct me if im wrong lol.  

         Step-by-step explanation:

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On January 11, Frank Morgan spent $228 on taxable merchandise at Wesley's Discount Clothing. The combined state and local sales
ryzh [129]

Answer:

Customer must pay a Total Amount of $240.

Step-by-step explanation:

Given:

Amount spent = $228

Sales tax = 5.25%

We need to find the Total Amount which need to be paid.

First we will find the amount paid in tax.

Amount paid in tax is equal to Percentage of sales tax multiplied with Amount spent and then divide by 100.

Framing the equation we get;

Amount paid in tax = \frac{5.25}{100}\times 228= \$11.97

Now Total Amount which need to be paid is equal to sum of Amount spent and Amount paid in tax.

Framing in equation form we get;

Total Amount which need to be paid = \$228 +\$11.97 = \$239.97

Rounding to nearest cent we get;

Total Amount which need to be paid = $240

Hence, Customer must pay a Total Amount of $240.

8 0
3 years ago
The point-slope form of the equation of the line that passes through (–5, –1) and (10, –7) is y + 7 = (x – 10). What is the stan
Crank

Answer:

<h3>2x + 5y = –15.</h3>

Step-by-step explanation:

We are given coordinates of the line passed through (–5, –1) and (10, –7) .

Applying slope formula,

Slope=\frac{y_2-y_1}{x_2-x_1}

\left(x_1,\:y_1\right)=\left(-5,\:-1\right),\:\left(x_2,\:y_2\right)=\left(10,\:-7\right)

Therefore,

m=\frac{-7-\left(-1\right)}{10-\left(-5\right)}

m=-\frac{2}{5}

Therefore, slope is m=-\frac{2}{5}.

Applying point-slope form y-y_1=m(x-x_1), we get

y+7 = -\frac{2}{5}(x-10)

y+7=-\frac{2}{5}(x-10)

On multiplying both sides by 5, we get

5(y+7)=5\times-\frac{2}{5}(x+1)

5y+35=-2(x-10)

5y+35=-2x+20

Adding 2x on both sides, we get

5y+25+2x=-2x+20+2x

2x+5y+35=20

Subtracting 35 from both sides, we get

2x+5y+35-35=20-35

2x+5y=-15.

Therefore, required equation is :

<h3>2x + 5y = –15.</h3>
6 0
3 years ago
A plane descends to sea level from 36 comma 400 feet after being airborne for 1 and one half hours. The entire flight time is 3
andrew-mc [135]

Answer:

350 feet per minute

Step-by-step explanation:

The amount of time it took the plane to descend is 3 hours 14 minutes minus 1 hour 30 minutes.

This means it took 104 minutes for the plane to descend 36,400 feet.

Dividing 36400 by 104, you get 350 which is the average rate of descent in feet per minute.

6 0
3 years ago
Read 2 more answers
How would you solve this by elimination?
jekas [21]
To solve this equation by elimination, what you would do is multiply one of the equations by -1, or distribute -1 to each term in the equation, any of the 2 equations. Then align the equations and add them together.

-(X + 3y = 3)
-X - 3y = -3

-X - 3y = -3
X + 6y = 3
__________
3y = 0
y = 0/3 = 0.

Now we can solve for x, by simply plugging the value of y into any of the 2 equations.

X + 6y = 3
X + 6(0) = 3
X + 0 = 3
X = 3.

The solution to your system of equations would be (3,0).

Check this by plugging in the point to the other equation and see if it is true.

X + 3y = 3
(3) + 3(0) = 3
3 + 0 = 3
3 = 3.

Thus it is the solution.
5 0
3 years ago
Which graph represents the same relation as the set StartSet (negative 3, 2), (5, 5), (3, 3), (3, negative 2) EndSet?
ikadub [295]

Answer:

The second graph

Step-by-step explanation:

4 0
3 years ago
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