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leva [86]
4 years ago
5

Solve 3(5x + 7)= 9x + 39

Mathematics
1 answer:
faltersainse [42]4 years ago
5 0

Answer:

x=3

Step-by-step explanation:

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Fiona and Camilla took a load of peaches to the farmer’s market. During the first hour, they sold ½ of the peaches plus ½ of a p
Lana71 [14]
<em>They took 101 peaches to market.</em>

<u>Check:</u>

In the 1st hour, they sold (101/2 + 1/2) = 102/2 = 51.  They had 50 left.

In the 2nd hour, they sold (50/3 + 1/3)=51/3=17.  They had (50-17)=33 left.

In the 3rd hour, they sold (33/4 + 3/4) = 36/4 = 9.  They had (33-9) = 24 left.

In the final hour, they sold (24/5 + 1/5) = 25/5 = 5.  They had (24-5) = 19 left.  yay!

Fiona and Camilla took their 19 remaining peaches and went home.  Sharing with
their parents and their brother Rowlf, each person had 3.8 peaches for dinner.
There was a lot of activity in the bathroom overnight.

================================================

The key to solving this one is to work it backwards.

-- They had 19 peaches left at the end of the day.

-- During the final hour, the 1/5 of a peach that they sold left them with 19,
so they had 19-1/5 before they sold the 1/5 of a peach.
The 19-1/5 was 4/5 of what they had at the beginning of the final hour.
So, at the beginning of the final hour, they had (5/4)x(19.2) = 24 .

-- During the 3rd hour, the 3/4 of a peach that they sold left them with 24,
so they had 24-3/4 before they sold the 3/4 of a peach.
The 24-3/4 was 3/4 of what they had at the beginning of that hour.
So, at the beginning of the 3rd hour, they had (4/3)x(24.75) = 33 .

Do the same for the 2nd hour.

Then do the same for the 1st hour.

And you'll work your way back up to 101 peaches.


4 0
4 years ago
Is the following equation exponential? Why or why not y=x^2+5
BARSIC [14]

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Answer: Yes because of x^2

Explanation:

I hope this helped!

<!> Brainliest is appreciated! <!>

- Zack Slocum

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

7 0
3 years ago
PLEASE! 10 POINTS! For what number A does the equation 3Ax - 24 = 5x - 9 + x have no solutions for x?
Gala2k [10]

Answer:

3Ax-6x = 15

3x(A-2)=15

If A were 2, the left side of the equation would be 0 and it wouldn't equal 15 no matter what the value of x is. So A is 2

6 0
3 years ago
Heeeellllppppppp it’s math
vitfil [10]

Answer:

32

Step-by-step explanation:

angel A= AngelC ( due to isosceles triangle)

now,

angel A+ Angel B + Angel C = 180° ( sum of the three angles of triangle is 180°)

74°+angle B+ 74° = 180°

148° + Angel B = 180°

angel B = 180° - 148°

therefore, Angel B = 32

3 0
3 years ago
Read 2 more answers
What are the 4 letters
sammy [17]

Answer:

BGHA

Step-by-step explanation:

You have to find all of the coordinates first in the order they are written:

(0,4)

(-4,3)

(2,0)

(0,-1)

Now use the code at the right to find the letters for each coordinate:

(0,4) B

(-4,3) G

(2,0) H

(0,-1) A

Now write it in this order (all caps): BGHA.

Hope it helps and is correct!

4 0
3 years ago
Read 2 more answers
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