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shusha [124]
2 years ago
14

Tara needs to read for a total of 60 minutes over 3 nights. She will read the same amount of time each night.

Mathematics
1 answer:
Ierofanga [76]2 years ago
3 0

Answer:

A. 20 x 3

Step-by-step explanation:

the amounts of time studied should be the amount studied per day multiplied by the total amount studied in three days, ie 20 minutes per day multiplied by the number of day , which is three days,

this amounts to 60 minutes

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Geometry :))), please help me
amm1812

Answer:

x = -5

Step-by-step explanation:

Since these two triangles are similar, the ratio between the corresponding lengths of each triangle will be the same.

This means the ratio between one side of each triangle (e.g. AD and DC) will be the same as the ratio between a different side of each triangle (e.g. BE and BC).

So, to create an equation for the sides which contain the unknown 'x', we must first find the ratio between the two sides by using a different set of sides.

On the right side we are given 9 for AD, and 18 for DC.

9/18 = 0.5

This means that the extra length of the larger triangle from the smaller one (AD) is half the length of the smaller triangle (DC). We can use this to make an equation for x:

If AD/DC = 0.5, then BE/EC will also = 0.5

BE = x+23

EC = x+41

Therefore:

\frac{x+23}{x+41} = 0.5

Now we can solve by multiplying both sides by x+41 to eliminate the fraction:

x+23=0.5(x+41)

Now we multiply out the brackets and move the terms to different sides:

x+23=0.5x+20.5

0.5x = -2.5

x = -5

And if we substitute the -5 into the equations:

-5+23 = 18

-5 + 41 = 36

We will see that -5 does indeed give us the same ratio between the lengths:

18/36 = 0.5

Hope this helped!

4 0
3 years ago
What is f(x)=2x^2+5 multiply by g(x)=2x
Kryger [21]

Answer:

4x^3 +10x

Step-by-step explanation:

for f(x) × g(x) you should multiply their functions :

(2x^2+5)×(2x) = 4x^3 +10x

6 0
3 years ago
An item is regularly priced at $27. It is now priced at a discount of 45% off the regular price. Find the price now
r-ruslan [8.4K]
The answer would be $12.15
8 0
3 years ago
Artie's brother is able to do 12 more push-ups than Artie. Artie represented the total number of push-ups his brother can do usi
Irina-Kira [14]

Answer:

Step-by-step explanation:

8 0
3 years ago
If (a,b) is an ordered pair for x-y=5, is (b,a) also a solution?
alina1380 [7]
The answer is no. Because solution (a,b) means x=a, y=b.and we have a-b=5.  And (b,a) would mean x=b and y=a but then x-y=b-a=-(a-b)=-5≠5. So  the pair (b,a) is not a solution.


5 0
3 years ago
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