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zheka24 [161]
2 years ago
6

Help please .............................

Mathematics
1 answer:
Rufina [12.5K]2 years ago
7 0

Answer:I think its the second one

Step-by-step explanation:

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Which number should each side of the equation 2/3x=10 be multiplied by to produce the equivalent equation of x = 15?
skelet666 [1.2K]
\dfrac23x=10
\dfrac32\times\dfrac23x=\dfrac32\times10
x=\dfrac{30}2=15
7 0
4 years ago
How much 7% saline solution should Kent mix with 60 cubic centimeters (cc) of a 19% saline solution to produce an 11% saline sol
Valentin [98]

Answer:

x=120cc volume of 7% solution

Step-by-step explanation:

Saline solution(7% solution) +

Saline solution (19% solution) = Saline solution (11% solution)

Saline solution(7% solution): (0.07)(x)

x= unknown volume

Saline solution (19% solution): (0.19)(60)

60= given volume

Saline solution (11% solution)= (0.07)(x+60)

x+60= Total volume

solve for x

(0.07)(x) + (0.19)(60) = (0.11)(x+60)

0.07x +11.4 = 0.11x + 6.6

0.11x - 0.07x = 11.4 - 6.6

0.04x = 4.8

x = 4.8/0.04

x = 120 cc volume of 7% solution

5 0
3 years ago
(4a2 - 3ab - 2b2)(2a - 5b)
Nuetrik [128]
8a^3 - 26a^2b + 11ab^2 + 10b^3

7 0
2 years ago
Mario can paint a house alone in 3 days. ben can paint the same house alone in 5 days. how long would it take them to paint the
Elan Coil [88]

The combined time taken if Mario and Ben work together will be 1.875 days.

<u>Time taken</u>:

  • Mario alone = 3 days
  • Ben alone = 5 days

<u>Work rate</u> :

  • Rate = 1 / time taken
  • Mario's rate = 1 / 3
  • Ben's rate = 1/5

<u>Their combined rate can be written thus</u> :

  • Mario's rate + Ben's rate = combined rate
  • 1/3 + 1/5 = 8/15

<u>Time taken if they work together</u> :

  • Reciprocal of combined work rate
  • Combined time taken = 1 ÷ 8/15 = 15/8 = 1.875 days

Therefore, the time taken of they work together is 1.875 days

Learn more :brainly.com/question/18112348

8 0
3 years ago
Please please help help me please please help helps me please ASAP ASAP please ASAP thank you!!
zalisa [80]

Answer:

Ill help! If there is anything you need help with? lol

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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