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tigry1 [53]
3 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]3 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]3 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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What is the slope of the line that passes through the pair of points (1/3, -1) and ( -2, 9/2)​
UkoKoshka [18]

Answer:

\boxed{m = - \frac{33}{14} }

.

Step-by-step explanation:

Use the form below

\boxed{\boxed{m = \frac{y_2 - y_1}{x_2 - x_1} }}

Where

  • m is a slope
  • (x_1,~y_1) and (x_2,~y_2) are the point of the line

.

So, the slope is

(\frac{1}{3} ,~ -1) \to x_1 = \frac{1}{3} ~and~y_1 = -1

(-2,~ \frac{9}{2} ) \to x_2 = -2~and~y_2 = \frac{9}{2}

.

m = \frac{\frac{9}{2} -(-1)}{-2-\frac{1}{3} }

m = \frac{\frac{11}{2} }{\frac{-7}{3} }

m = \frac{11}{2} \div (-\frac{7}{3} )

m = \frac{11}{2} \times (-\frac{3}{7} )

m = - \frac{33}{14}

.

Happy to help:)

7 0
3 years ago
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The genetically altered spider that turned Peter Parker into Spider Man with a single bite was about 0.035 ounces. If Spider Man
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1036  genetically altered spiders

8 0
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How to calculate the decimal form of a given fraction. Please help ASAP mam/sir.​
kow [346]

In a fraction, the fraction bar means divided by. So to find the decimal form equivalent of a fraction like 1/4 you need to solve the math problem 1 dived by 4.

1 ÷ 4= 0.25

8 0
3 years ago
Which could be the name of a point?
lakkis [162]
I believe the answer is A or C because capital letters are used to name a point

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A group of people stand in a circle and hold hands. One person squeezes the hand of the person on her left, who squeezes the han
MAVERICK [17]
To complete the situation, this can be found elsewhere:

<span>People: 5 Time: 2.10
People: 8 Time: 3.36
People:14 Time: 5.88
People:23 Time: 9.66
</span>
The choices are the below:

A: p = 0.42+ s, where s is time and p is the number of people 

B: s = 0.42p2, where s is time and p is the number of people 

C:p = 0.42+ s, where s is time and p is the number of people 

D:s = 0.42p, where s is time and p is the number of people


The answer is letter D. Hope it helps. 

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