All categories

3 years ago

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:

You might be interested in

At the Arctic weather station, a warning light turns on if the outside temperature is below -25 degrees Fahrenheit. Which inequa

Leya [2.2K]

Answer:

t≥-25

Step-by-step explanation:

this is becuaset ≥ -25 shows that it can not fall under -25, but can be equal to -25.

8 0

2 years ago

Tan^2 70° -sec^2 70°

kipiarov [429]

Answer:

-1

Step-by-step explanation:

We need to find the value of tan² 70° -sec² 70°.

We know that,

$\sec^2\theta-\tan^2\theta=1$ ...(1)

We can write the given expression as :

tan² 70° -sec² 70° = -(-tan² 70° +sec² 70°)

=-(sec² 70°-tan² 70°)

Using identity (1)

=-(1)

= -1

Hence, the value of the given expression is -1.

4 0

3 years ago

a circle is centered at the point -3,2) and passes through the point (1,5). The radius of the circle is blank units. The point (

lianna [129]

It's important that you share the complete question. What is your goal here? Double check to ensure that you have copied the entire problem correctly.

The general equation of a circle is x^2 + y^2 = r^2. Here we know that the circle passes thru two points: (-3,2) and (1,5). Given that a third point on the circle is (-7, ? ), find the y-coordinate of this third point.

Subst. the known values (of the first point) into this equation: (-3)^2 + (2)^2 = r^2. Then 9 + 4 = 13 = r^2.

Let's check this. Assuming that the equation of this specific circle is
x^2 + y^2 = r^2 = 13, the point (1,5) must satisfy it.

(1)^2 + (5)^2 = 13 is not true, unfortunately.

(1)^2 + (5)^2 = 1 + 25 = 26 (very different from 13).

Check the original problem. If it's different from that which you have shared, share the correct version and come back here for further help.

3 0

3 years ago

Solve -2= -(x-8), justifying each step with an algebraic property PLZ HELP

vredina [299]

-2 = -(x-8)
-2 = -x + 8 ( - * + = - and - * - = + )

-2 - 8 = -x +8 - 8
-2 - 8 = -x
-(2+8) = - x
-10 = -x | * (-1)

x=10

7 0

3 years ago

Please help.. 10 points

Leokris [45]

Answer:

z = 55.15432893

x = 59.61543424