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yanalaym [24]
3 years ago
12

Did i do this righttttt what do i have to fix

Mathematics
2 answers:
ExtremeBDS [4]3 years ago
8 0

Answer:

No, he is not correct

Step-by-step explanation:

Evan said that he did 125% more in the second week.

So, it must be like 125% of 20 + 20 (Because he did 20 hours of work in the first week)

Now, Let's see whether it equals 25

=> 125% * 20 + 20

=> 125/100 * 20 + 20

=> 1.25*20 + 20

=> 25 + 20

=> 45

So, No, he is not correct

Rather he spent 25% more hours doing homework next week.

PIT_PIT [208]3 years ago
4 0

Yes

It's correct

Sorry if I am incorrect

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Math<br><img src="https://tex.z-dn.net/?f=%282a%20%2B%203%29%20%2B%20%283a%20-%207%29" id="TexFormula1" title="(2a + 3) + (3a -
Yuki888 [10]

Answer:

5a -4

Step-by-step explanation:

Given

(2a + 3) + (3a - 7) ← remove parenthesis

= 2a + 3 + 3a - 7 ← collect like terms

= (2a + 3a) + (3 - 7)

= 5a + (- 4)

= 5a - 4

3 0
3 years ago
Read 2 more answers
If you traveled 5 miles in 10 minutes, how long will it take you to travel 1 mile
horrorfan [7]

Answer:

2 Minutes

Step-by-step explanation:

the first ratio is 5:10 since it is easier to work with big numbers let's start by  multiplying it by 2 to get something

Now we have 10:20 we can divide this by 10 and get the ratio 1:2

1:2 equals 1 mile:2 minutes which is 1 mile in 2 minutes!

Have a nice day and I hope this helps!

8 0
3 years ago
Four times a number,added to 9 ,is 41.find the number
Karolina [17]

Answer:

8

Step-by-step explanation:

41-9=32

32/4=8

4 0
2 years ago
Read 2 more answers
The ratio of red collars to black collars sold at one store is 9 to 10. in one month 30 black collars were sold. is 57 a reasona
AlekseyPX
27 red collars. 57-30=27
3 0
3 years ago
F(x)=2x^2+2x-4 find vertex
8090 [49]
A = 2
b = 2
c = -4
"a" is greater than zero so the vertex is a minimum point and the graph is concave up.
The (x,y) point of the vertex is usually designated by the letters (h, k)
The "x" position (or "h") is calculated with this formula:
h = -b / 2a
h = -2 / 4
h = -1 / 2

"k" is calculated with this equation:
k = ah^2 + bh +c
k =(2*-1 / 2 * -1 / 2) + (2 * -1 / 2) + -4
k = (1 / 2) - 1 -4
k = -4.5
so the vertex is at point (-.5, -4.5)

Source:
http://www.1728.org/quadr3.htm


4 0
3 years ago
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