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ololo11 [35]
3 years ago
14

What is the area of a triangle with a base of 7 mm and a height of 10 mm

Mathematics
1 answer:
galina1969 [7]3 years ago
5 0

Answer:

A≈3.5×10-5m²

Step-by-step explanation:

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What quantity of 75 per cent acid solution must be mixed with a 30 per cent solution to produce 1080 mL of a 50 per cent solutio
Jlenok [28]

Answer: 480 mL, 600 mL

Step-by-step explanation:

Given

The concentration of the first acid is 75%

The concentration of the second acid is 30%

The final mixture has a concentration of 50%

The final volume is 1080 mL

Suppose x and y be the volume of the first and second acid

\therefore x+y=1080\quad \ldots(i)\\0.75x+0.3y=0.5\times 1080\quad \ldots(ii)

Solving the above equations we get

x=480,y=600

So, the quantity of the first acid is 480 mL and 600 mL for the second mixture.  

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3 years ago
What is the volume of this rectangular prism?
Anika [276]

Answer:

1/4*1*2 = 0.5 cm^3

Step-by-step explanation:

V=whl

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tekilochka [14]

Answer:

x = 1, y = 1

Step-by-step explanation:

Use system of equations to solve for x and y by using substitution

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3 years ago
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Please help me before i fail!! Find the solution(s) of the following equation.
TEA [102]

Answer: A or B but really A

Step-by-step explanation:

c² = 144/169

√c² = √144/169

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If six times a number is decreased by fourteen, the result is 124. What is the number
denis23 [38]

Answer:

\large\boxed{23}

Step-by-step explanation:

Six times a number is decreased by fourteen, the result is 124.

Write an equation that represents this

(6 * x) - 14 = 124

Multiply 6 by x to remove the parenthesis

6x - 14 = 124

Add 14 to both sides of the equation

6x = 138

Divide both sides of the equation by 6

x = 23

The unknown number is \large\boxed{23}

Hope this helps :)

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3 years ago
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