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tigry1 [53]
2 years ago
15

What is the value of z in the table? A 4% peroxide solution is mixed with a 10% peroxide solution, resulting in 100 L of an 8% s

olution. The table shows the amount of each solution used in the mixture.
Mathematics
2 answers:
Tresset [83]2 years ago
4 0

Answer:

87.1

Step-by-step explanation:

Lets say, first number = x


Second number = 3x+7


Total = 49



(x)+(3x+7)= 49


4x+7 = 49


4x = 42


x = 42/4


x= 10.5



x= 10.5


3x+7 = 3(10.5)+7 = 87.1



Hope this helps!!

Sergeeva-Olga [200]2 years ago
4 0

Answer:

I think it would be C. or if it has to be rounded then it would be D.

(someone comment if they know)

Step-by-step explanation:

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Jackson and his children went into a movie theater and where they sell bags of popcorn for $6.50 each and candies for $4 each. J
Lisa [10]

Answer:

There are no possible solutions for this question.

Step-by-step explanation:

3 0
2 years ago
Huixian mother buys some shares of company A on day 0. on day 7, the share price of company a is $4.60. if she sells all her sha
Wewaii [24]
I think that u might want to do the share the company money i could be wrong but if i sm sorry

4 0
2 years ago
2.5 kg of cabbages cost £1.20<br><br> Work out the cost of 3.75 kg
s2008m [1.1K]
Thank you for your question!

In order to get the cost of 1 kg of cabbage, divide the cost by the quantity:

1.20/2.5
0.48

Now, multiply the amount for 1 kg to 3.75, because you need 3.75 times the amount.

0.48 * 3.75
1.80

So, it would cost 1.80 pounds for 3.75 kg.
Hope this helped!


8 0
2 years ago
The sum of two numbers is −138. Their difference is −2. Find the numbers.
Natasha_Volkova [10]

Answer:

The Answer is: The first number is -70 and the second number is -68.

Step-by-step explanation:

Let f = first number and s = second number.

The sum of both is -138:

f + s = -138

The difference is -2

f - s = -2

Solve for f:

f = -2 + s

f = s - 2

Substitute:

s - 2 + s = -138

2s = -136

s = -68, the second number

Solve for f:

f = s - 2

f = -68 - 2 = -70, the first number

Proof:

f + s = -138

-68 + (-70) = -138

-138 = -138

Then:

f - s = -2

-70 - (-68) = -2

-70 + 68 = -2

-2 = -2

Hope this helps! Have an Awesome Day!! :-)

5 0
2 years ago
A broker has a four-year contract to manage a rental unit for an investor. He is to receive 50% of the first month's rent and 5%
Alex777 [14]

Answer:

Step-by-step explanation:

600 X .50 = 300.00 1st month

600 X .05 = 30.00 47 months

30 X 47 = 1,410

1,410 + 300 = 1,710 (final answer)

8 0
2 years ago
Read 2 more answers
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