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belka [17]
4 years ago
6

Are these correct ? And help with number 3 please

Mathematics
1 answer:
alina1380 [7]4 years ago
4 0
Yes, 1 & 2 are correct. 3 would be explaining how you got your answers. For example, you could use number 1 and say you thought about 10 x 3 equals 30 so 3 groups with 8 left over and so on or however your thought process went.
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HELP PLEASE BRAINIEST
yaroslaw [1]

Answer:

Option A is correct answer

Step-by-step explanation:

mark me brainliest

8 0
3 years ago
I Need a The Answer Plz!!! Geometry Is Hard
Veseljchak [2.6K]

Answer:

36

Step-by-step explanation:

Triangle FED and Triangle AEC are similar.

That means, the ratio of corresponding sides are equal. Thus we can say:

\frac{ED}{DF}=\frac{EC}{CA}

Also, since EC is 39 and D is the midpoint, ED and DC are half of that. Hence ED = 39/2 = 19.5

Now we can use the ratio to solve for AC:

\frac{19.5}{18}=\frac{39}{CA}\\19.5CA=18*39\\19.5CA=702\\CA=\frac{702}{19.5}CA=36

Hence, AC = 36

4 0
3 years ago
Factor 15z^2+17z-18 please show work
siniylev [52]

There is no common factor between 15, 17 and 18 because 17 is prime.  

15z² +17z - 18 =  

d = 17² - 4.15.-18  

d = 289 + 1080  

d = 1369  

z = (-17 +/- \/1369) : 2 * 15  

z = (-17 + 37) : 30  

z' = 20 : 30 = 2/3  

z" = (-17 - 37) : 30  

z" = -54 : 30 = -1.8  

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7 0
4 years ago
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NNADVOKAT [17]

Answer:

y=250x-4

Step-by-step explanation:

If y represents the amount of money made in a week, y=250.

If x represents the amount of cakes that are made, x=?

You make $250(y) a week, you then spend $4(x) per cake, this would make the equation:

y=250x-4

3 0
3 years ago
No links Lean's mother paid 2.16 for 3 pounds of sugar. How much would 1 pound of sugar cost???
hammer [34]

Answer:

e

Step-by-step explanation:

2.16/3=72c

4 0
3 years ago
Read 2 more answers
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