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melomori [17]
3 years ago
14

How do you solve -3(2/5x-2)=18

Mathematics
1 answer:
stira [4]3 years ago
4 0

-3(2/5x-2)=18

multiply -3 by 2/5 and my -2

-6/5x + 6 = 18

subtract 6 from each side

-6/5x = 12

divide by -6/5, multiply 12 by -5/6

x = -10

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NARA [144]
B is correct because looking at the chart there is less sold at South and D because there were more bags sold at west
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3 years ago
Brielle and Joshua are running a half marathon race, which is 13.1 miles long. It takes Brielle 10 minutes to run 1.25 miles and
CaHeK987 [17]

Answer: Brielle will run the marathon faster.

Brielle = 104.8 minutes  

Joshua = 157.2 minutes

Step-by-step explanation:

Speed rate = distance /time

Brielle = 1.25 /10 = 0.125 miles per minute

Joshua = 1.5/18 = 0.083333 =1/12 miles per minute

Since 0.125 (Brielle) > 1/12 (Joshua)

Brielle will run the marathon faster.

To calculate the time that takes each one to run the entire race (13.1 miles)

Time= distance / speed

  • Brielle = 13.1 /0.125 = 104.8 minutes
  • Joshua = 13.1 / (1/12)= 157.2 minutes

Feel free to ask for more if needed or if you did not understand something.

8 0
3 years ago
Find the length of QP given Q is the midpoint of XF, PQ =2X+1, XF=7X-4, PF=X
nadezda [96]

Answer:

Therefore the length of QP = 3.4 units

Step-by-step explanation:

Given:

PQ = 2x + 1

XF = 7x - 4

PF = x

Q is the mid poimt of XF

∴ XQ = QF

QF = PQ - PF  ..........( Q - F - P )

     = 2x + 1 - x

∴ QF      = x + 1

∴ XQ = QF = x + 1

TO Find:

QP = ?

Solution:

By Addition Property we have

XP = XQ + QF+PF ..........(X-Q-F-P)\\\\

XF + PF =XQ + QF+PF ..........(X-Q-F-P)\\

Substituting the given values in above equation we get

(7x - 4) + x = (x +1) + (x +1) + x

8x -4 = 3x +2

8x - 3x + 4 + 2

5x = 6

∴ x = \frac{6}{5}

Now we require

QP = (2x + 1)

∴ QP = 2\times \frac{6}{5} +1\\\\QP = \frac{12+5}{5} \\\\QP =\frac{17}{5} \\\\\therefore QP = 3.4\ unit

Therefore the length of QP = 3.4 units

3 0
3 years ago
Find the value of x.
OverLord2011 [107]

Answer:

5

Step-by-step explanation:

4 0
3 years ago
Mid Linear Equation // ALGEBRA I HELP PLSS
Rzqust [24]

Answer:

1. y = -125000x + 700000

2. Negative

3. Positive

Step-by-step explanation:

1. The no. Of gallons before irrigation

= 700000

After irrigation = 200000

This means that there was a reduction of 500000 gallons in 4 hours which indicates that 125000 gallons were used (on an average) in 1 hour

So the equation is

y = 700000 - 125000x

Hope this helps

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