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mart [117]
2 years ago
11

You are determining the mass of an object using a triple beam balance. When the pointer is lined up with the zero mark, the ride

rs show values of 300 grams, 20 grams, and 8.0 grams. What is the mass of the object?
Mathematics
1 answer:
Molodets [167]2 years ago
3 0
328 grams is the mass.
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Calculer x si (x+1/2)^2= 4/9
-Dominant- [34]

Answer:

x=-\frac{7}{6}\\x=\frac{1}{6}

Step-by-step explanation:

The equation to solve is:

(x+\frac{1}{2})^2=\frac{4}{9}

To get rid of the "square", we need to take square root of both sides:

\sqrt{(x+\frac{1}{2})^2}=\sqrt{\frac{4}{9}}\\x+\frac{1}{2}=\frac{\sqrt{4}}{\sqrt{9}}

Then we use algebra to find the value(s) of x. Remember, when we take square root, we have to add up a "+-" (on the right side). Shown below:

x+\frac{1}{2}=+-\frac{\sqrt{4}}{\sqrt{9}}\\x+\frac{1}{2}=+-\frac{2}{3}\\x=\frac{2}{3}-\frac{1}{2}=\frac{1}{6}\\x=-\frac{2}{3}-\frac{1}{2}=-\frac{7}{6}

So these are 2 answers for x.

5 0
3 years ago
The ratio of boys to girls at a local sports club is 3 to 1 if there are 45 girls, how many boys are there
marysya [2.9K]

Answer:

135

Step-by-step explanation:

3 0
3 years ago
Target has a 42" HDTV that sells for $1,250 and is on sale for 15% off. After a sales tax of 6.5%, what is the final cost for th
Naddika [18.5K]

Answer:

$ 1,131.56

Step-by-step explanation:

1,250x85%=1,062.50

1,062.50x6.5=69.06

1062.50+69.06=1,131.56

7 0
3 years ago
What is r ÷ p equal to?
marshall27 [118]

Answer:

if those are variables they can equal anything you want like r=4 and p=2 r/p = 2

Step-by-step explanation:

7 0
2 years ago
Anyone there please help me I need help
Sonja [21]
There are no solutions, because the lines never touch. The answer(s) to a system of equations is/are the points where the two lines meet. Does this make sense?
5 0
3 years ago
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