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adelina 88 [10]
3 years ago
12

Which choice correctly expresses the number below in scientific notation?

Mathematics
1 answer:
nikklg [1K]3 years ago
6 0

Answer:

Step-by-step explanation:

hjj

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Its all in the picture please soon
Jet001 [13]

Answer: B C E

Step-by-step explanation:

Distributive property

8 0
3 years ago
In a certain neighborhood, there's a sagging power line between two utility poles. The utility poles are 50 feet tall and 120 fe
e-lub [12.9K]
<h3>Answer:  33.75 feet</h3>

In fraction form, this value is equal to 135/4

33.75 ft is equivalent to 33 ft, 9 inches.

===============================================

Explanation:

Refer to the diagram below.

The key point to start with is point H, which is the vertex of the parabola.

Recall that vertex form is

y = a(x-h)^2 + k

What we'll do is plug in the vertex (h,k) = (60,30) which is the location of point H. We'll also plug in (0,45) which is the y intercept, aka the location of point C.

So,

y = a(x-h)^2 + k

y = a(x-60)^2 + 30 .... plug in vertex

45 = a(0-60)^2 + 30 .... plug in y intercept coordinates

45 = a(-60)^2 + 30

45 = a(3600) + 30

45 = 3600a + 30

45-30 = 3600a

3600a = 15

a = 15/3600

a = 1/240

This then means:

y = a(x-h)^2 + k

y = (1/240)(x-60)^2 + 30

This is the equation of our parabola. Plug in x = 30 to determine the height of point K

y = (1/240)(x-60)^2 + 30

y = (1/240)(30-60)^2 + 30

y = (1/240)(-30)^2 + 30

y = (1/240)(900) + 30

y = 15/4 + 30

y = 15/4 + 120/4

y = 135/4

y = 33.75

Therefore, the height of the power line, when it is 30 feet away from one of the poles, is 33.75 feet. This is the y coordinate of point K.

Side note: 33.75 ft = 33 ft + 0.75 ft = 33 ft + 12*0.75 in = 33 ft + 9 inches

8 0
2 years ago
Help pleaseeeeeeeeee
grigory [225]

Answer:

Function

Step-by-step explanation:

please give me brainlist

hope this helped

I just did this few days ago with my math teacher.

3 0
3 years ago
List the angles in order from smallest to largest.
exis [7]
<span>∠ E, ∠ C, ∠ D is the answer 
</span>
7 0
3 years ago
What is 72/60 in simplest form
nexus9112 [7]
You have to divide both by common factor, in this case it's 12
So 72/60 = 6/5
Thus, 6/5 is the simplest form.
3 0
3 years ago
Read 2 more answers
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