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Brut [27]
3 years ago
13

25 points and a mark!!! Help Please!!A scientist mixes water (containing no salt) with a solution that contains 35 % salt. She w

ants to obtain 210 ounces of a mixture that is 30 % salt. How many ounces of water and how many ounces of the 35 % salt solution should she use?
Mathematics
1 answer:
Delicious77 [7]3 years ago
5 0

Answer:

Step-by-step explanation:first you add 35 35 35 35 and keep trying until you get the number 210 i added it 6 times and i got 220 its close i guess

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PLZ HELP!!!!!!A trapezoid has an area of 230.945 square meters. One base is 7.7 meters long. The height measures 18.7 meters. Wh
Amanda [17]

Answer:

17m

(Anyone can correct me if I'm wrong)

Step-by-step explanation:

The following equation would be used: A=\frac{a+b}{2} h

We would simply substitute the given values, move the values around then we would get our answer:

230.945=18.7\frac{7.7+b}{2}\\\\230.945=9.35(7.7+b)\\\\b+7.7=24.7\\\\b=17m

7 0
3 years ago
What property of equality is x+3.75=7
dalvyx [7]
3.25 you just subtract 3.75 from 7
Hope this helps!
4 0
3 years ago
True or False:
mylen [45]

Answer:

True

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The graph below shows a company's profit f(x), in dollars, depending on the price of pens x, in dollars, sold by the company:
Volgvan

The answers to the various part as well as its reasons are given below

<h3 /><h3>Part A:</h3>
  • The x-intercepts shows a zero profit.
  • The maximum value of the graph tells  or depict the maximum profit.
  • The function is one that goes up or increases upward until it reach the vertex and then it falls or decreases after it.
  • This implies that the profit goes up as it reaches the peak at the vertex and it goes down after the vertex up until it gets to zero.
  • The  profits are negative as seen on the left of the first zero and on the right of the second zero.

<h3>Part B:</h3>

An approximate average rate of change of the graph from x = 3 to x = 5, shows the reduction in profit from  3 to 5.

<h3>Part C:</h3>

Based on the above,  the domain is one that is held back or constrained by x = 0 .

We are compelled at x = 6 due to the fact that we have to maneuver a negative profit.

Learn more about quadratic function from

brainly.com/question/25841119

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4 0
2 years ago
Three of Santas helpers are a combined height of 11 feet and 6 inches. Clem is 15 inches shorter than Clyde who is 6 inches tall
Tresset [83]

Answer:

Clem's Height =38 Inches

Clyde's Height= 53 Inches

Chloe's Height = 47 Inches

Step-by-step explanation:

Let Clem's height be x, Clyde's height be y and Chloe's height be z

As given

x+y+z=11 feet 6 inches

As 1 Foot= 12 Inches so  (11*12+6)=138

x+y+z= 138 inches  (Equation 1)

Clem is 15 inches shorter than Clyde so:

x+15=y         (Equation 2)

Clyde is 6 inches taller than Chloe

z=y-6        (Equation 3)

Putting z's value from equation 3 in equation 1

x+y+y-6=138

x+2y=138+6

x+2y=144    (Equation 4)

Putting Value of y from equation 1 in equation 4

x+2(x+15)=144

x+2x+30=144

3x=144-30

x=114/3

x=38

Putting x's value in equation 1 to get the value of y

38+15=y

y=53

Putting value of y in equation 3

z=53-6

z=47

Checking by putting values of x,y,z in equation 1 to see whether all heights equal 138 inches or not

38+53+47=138

138=138

3 0
4 years ago
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