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notsponge [240]
2 years ago
12

Can someone plz help

Mathematics
2 answers:
irga5000 [103]2 years ago
8 0

Answer: I think it would be 8!

Step-by-step explanation: I hope this help!

sergiy2304 [10]2 years ago
6 0
13 speeches would be correct since most speeches were about 7 minutes so 120/7 is about 15
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PLEASE HELP IM CONFUSED! Find what the measurements of angles a-c are and state the reason
nata0808 [166]

Answer:

<a = 90°   (180-90 supplementary angle)

<b = 90°   (180-90 supplementary angle)

<d = 48°   (180-132 supplementary angle)

<e = 132°  (opposite angle)

<c = 42°     (interior angles of a triangle equal 180.  180-48-90=42)

Step-by-step explanation:

<a = 90°   (180-90 supplementary angle)

<b = 90°   (180-90 supplementary angle)

<d = 48°   (180-132 supplementary angle)

<e = 132°  (opposite angle)

<c = 42°     (interior angles of a triangle equal 180.  180-48-90=42)

8 0
3 years ago
If I have 150,000 crystals, and ONE costume cost 4,000 crystals, how many costumes can I buy total?
MArishka [77]
Okay, think of it this way: 

You have to find how many times 4,000 goes into 150,000. 

This will tell you how many costumes you can buy.

To make this easier, we can divide 4 by 150. (this is proportional to 4,000 and 150,000 since we took 3 zeros from each number; you will get the same answer) 

150/4= 37.5 

You can buy 37 whole costumes.

Hope this helped! 
6 0
3 years ago
A sand dune stands 5 feet above sea level. The hill is eroding at a rate of 1 foot per 20 years. Let y represent the height of t
avanturin [10]
y = -1/2x + 5 should be your equation because it is 5 ft above sea level and its eroding, or going down, 1 ft per 20 years. So every year, the sand dune erodes 1/20 ft more.

Hope this helps!
4 0
3 years ago
Read 2 more answers
In addition to oxygen, several gasses are in air. Carbon dioxide makes up 0.00039 of air. What is 0.00039 written as a percent ?
Simora [160]
0.00039 x 100 = 0.039%
7 0
4 years ago
What do we mean by the value of an expression?
Alexxx [7]

We have learned that, in in an algebraic expression, letters can stand for numbers. When we substitute a specific value for each variable, and then perform the operations, it's called evaluating the expression. Let's evaluate the expression 3y + 2y when 5 = y.

7 0
3 years ago
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