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professor190 [17]
3 years ago
9

Math nation section 10 test yourself

Mathematics
1 answer:
Aleksandr [31]3 years ago
8 0
Huhnsnmdmfqkwkwnnzfnmfkw
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the graph below plots a function f x if x represents time the average rate of change of the function f x in the first three seco
Vinvika [58]

Answer:

-50

Step-by-step explanation:

rate of change = slope so you were asked for the slope between the point in which x = 0 (0,150) and the point in which x=3 (3,0)

Here is how you calculate it:

https://simplisico.com/share/q/ZAHw5oFz9yYoOV0BmMRwQI9U

4 0
3 years ago
Which choice is equivalent to the expression 4(x+2y)? I need it right now please!
Sergio039 [100]

Answer:

4x+8y

Step-by-step explanation:

you use distributive property

you multiply 4 times x

and 2y times 4

hope this helps

5 0
3 years ago
Evaluate the expression.<br> (6 − 3)!
olga55 [171]

Answer:

3

Step-by-step explanation:

If this isn't a trick question then the answer is 3.

3 0
3 years ago
Read 2 more answers
If 100 people drink 1.5 cups of coffee a day and the cost per cup is .40 how much would it cost to provide coffee for the whole
N76 [4]

Answer:

It would cost <u>15600</u> to provide coffee for the whole year.

Step-by-step explanation:

Given:

If 100 people drink 1.5 cups of coffee a day and the cost per cup is .40

Now, to find the cost to provide coffee for the whole year if you're place is open 5 days a week.

So, we have the unit rate, and we have to find the cost of 1.5 cup by multiplying 0.40.

<em>1.5 cup of coffee cost </em>1.5\times 0.40=0.60.

<em>Thus, 1.5 cup cost 0.60.</em>

<em>If, 100 people drink 1.5 cups. </em>

<em>Then, total cost of  100 people drinking 1.5 cups of coffee = </em>100\times 0.60=60<em />

<em>As, place is open 5 days a week.</em>

So, to get the cost of coffee in 5 days of a week we multiply 5 by 60:

5\times 60\\\\=300.

<em>Hence, the cost of coffee in a week is 300.</em>

<em>In 1 year there are 52 weeks.</em>

Now, to get the cost for the whole year we multiply 52 by 300:

52\times 300\\\\=15600.

Therefore, it would cost 15600 to provide coffee for the whole year.

6 0
3 years ago
Read 2 more answers
In the diagram below, points A, E, and F lie on the same line. If ABCDE is a regular pentagon, and \angle EFD=90^\circ, then how
mash [69]

The measure of ∠FDE = 18°

<u>Explanation:</u>

A Pentagon has 5 sides and is made of 3 triangles

So, sum of the interior angles of the triangle = 180°

Therefore, the total interior angle of a regular pentagon = 3 X 180° = 540°

A regular pentagon will have all its angle equal

All the five angles would make 540°

Let the measure of one angle = x

So,

5x = 540°

x = 108°

Therefore, the measure of each angle of a pentagon is 108°

From the diagram,

∠AED + ∠FED = 180°

∠AED = 108° as it is one of the sides of the pentagon

So,

108° + ∠FED = 180°

∠FED = 72°

In ΔEFD,

∠FED + ∠EFD + ∠FDE = 180°

72° + 90° + ∠FDE = 180°

∠FDE = 18°

Therefore, the measure of ∠FDE = 18°

8 0
3 years ago
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