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3 years ago

Please help me I will give Brainiest to who can answer first. :)

Mathematics

1 answer:

777dan777 [17]3 years ago

4 0

If 40% of the cameras are digital, that means 60% of them are not digital.

If 60% of all cameras is 24, then 20% is 8, making 40% 16 cameras.

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What is the slope of a line perpendicular to the line whose equation is x +y= 2.

pogonyaev

Answer:

x + y =2

-x -x

y = -1x + 2

Perpendicular is y= 1x + 2

Step-by-step explanation:

8 0

3 years ago

Verify sin^2 theta plus cos^2 theta =1

son4ous [18]

Here is the prove ....

6 0

4 years ago

In a grid of a backyard, the vertices of the floor of a shed are (20, 80), (50, 60), (50, 20), and (20, 20). The coordinates are

sdas [7]

Answer:

The area of the floor of the shed is <u>1500 square feet.</u>

Step-by-step explanation:

Given:

The vertices of the floor of a shed are: (20,80), (50,60), (50,20) and (20,20)

Let us plot the given vertices on a graph.

From the graph, it is clear that the given figure is a trapezium with opposite parallel sides being parallel to the y axis. The height of the trapezium is the side that is parallel to x axis.

The area of the trapezium ABCD is given as:

$A=\frac{1}{2}(AB+CD)\times AD$

From the graph, AB = 60 ft, CD = 40 ft, AD = 30 ft

Therefore, the area is given as:

$A=\frac{1}{2}(60+40)\times 30\\A=\frac{1}{2}\times 100\times 30=1500\ ft^2$

Therefore, the area of the floor of the shed is 1500 square feet.

4 0

4 years ago

In a group of 28 students, 6 study both Art and Biology.

Helen [10]

Answer:

3/13

Step-by-step explanation:

There are 28 students. 1 studies biology but not art. 1 studies neither subject. Therefore, there are 26 students who study art.

Of the 26 students who study art, 6 also study biology. So the probability is 6/26, which reduces to 3/13.

4 0

3 years ago

Evaluate angles d and e, giving reason for your answer

Jobisdone [24]

Answer:

Ok so we know that the angle on top is 110 since the angle above is the same.

we also know that all the angle of the triangle will add up to 180 so

D+(180-E)+110=180

we also know that d and the angle directly across are the same so

180-110=70

70divide by 2 equals 35

now we subtratch 35 from 180 to get 145

E=145

D=35

Your Welcome

BIFFY OUT!!!

5 0

3 years ago

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