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Volgvan
3 years ago
14

If I cleaned 38 windows in 2 hours then how many windows will I clean in 7 hours

Mathematics
2 answers:
Bumek [7]3 years ago
6 0

Answer:

133

Step-by-step explanation:

38/2=19

1 hour = 19 clean windows

7 hours *19 =133

zhuklara [117]3 years ago
3 0

Answer:

133 windows

Step-by-step explanation:

We can use ratios to solve

38 windows           x windows

----------------------- = ----------------

2 hours                   7 hours

Using cross products

38 *7 = 2x

266 = 2x

Divide each side by 2

266/2 =2x/2

133 =x

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Determine the equation of the line that passes through the point (7, -23)and is perpendicular to the line y=1/3x-6Enter your ans
marishachu [46]

We have a line y = 1/3x -6

We want a line that is perpendicular to this line

Perpendicular lines have slopes that multiply to -1

1/3 * m = -1

3 * 1/3 *m = -1 * 3

m = -3

The slope of the perpendicular line is -3

y = mx+b where m is the slope and b is the y intercept

y = -3x+b

We have a point on the line ( 7 ,-23)

Substitute this point into the equation

-23 = -3(7)+b

-23 = -21+b

Add 21 to each side

-23+21 = -21+21+b

-2 = b

y = -3x-2

In slope intercept form, the line perpendicular passing through (7,-23) is

y = -3x-2

3 0
1 year ago
Please help me with this soon much appreciated.
NeX [460]

Answer:

1 : 2

Step-by-step explanation:

this is a 30-60-90 triangle which is a special right triangle. the ratio of the sides is x: x*sqrt(3): 2x, in the order short leg: long leg: hypotenuse. so the ratio of the short leg to the hypotenuse is x:2x or 1:2

8 0
2 years ago
Positive, negative, zero or undefined?
Orlov [11]
It’s negativeeeeeeeeeeeeeeee
5 0
3 years ago
Deepak wrote out the steps to his solution of the equation startfraction 5 over 2 minus 3 x minus 5 plus 4 x equals negative sta
andre [41]

The solution is x=3/4

How can we solve given equation?

First, we will solve like terms. Then shift constant to other side and keep x on the same side to get the value of x.

We can solve given equation as shown below:

5/2-3x-5+4x=-7/4

(5-10)/2+x=-7/4

-5/2+x=-7/4

x=5/2-7/4

x= (10-7)/4

x=3/4

Hence, the solution is x=3/4.

Learn more about Linear equations here:

brainly.com/question/43297

#SPJ4

4 0
2 years ago
HELP ASAP!! Can you explain how to decompose a rectangle into congruent triangles? How does the area of the decomposed pieces re
Aleksandr-060686 [28]

Answer: You would divide the rectangle into half, to form two congruent triangles. When you multiply the area of 1 of the triangles, it gives you the area of both triangles, and so the area of the triangle as a whole

7 0
3 years ago
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