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777dan777 [17]
3 years ago
12

How do I create an equivalent expression that includes parentheses so that the value of the expression is 2 for 3+8-4x2-12

Mathematics
1 answer:
natka813 [3]3 years ago
5 0
(3+8-4)×2-12
3+8=11
11-4=7
7×2=14
14-12=2
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Which of the following statements are true about the
Salsk061 [2.6K]

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w and x are adjacent

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y and z are supplementary

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Step-by-step explanation:

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2 years ago
Whats balance fe+30^2 >fe^2O^3
blsea [12.9K]

Answer:

You are given:

4Fe+3O_2 -> 2Fe_2O_3

4:Fe:4

6:O_2:6

You actually have the same number of Fe on both sides, The same is true for O_2 so yes this equation is properly balanced.

For added benefit consider the following equation:

CH_4+O_2-> CO_2+2H_2O

ASK: Is this equation balanced? Quick answer: No

ASK: So how do we know and how do we then balance it?

DO: Count the number of each atom type you have on each side of the equation:

1:C:1

4:H:4

2:O:4

As you can see everything is balanced except for O To balance O we can simply add a coefficient of 2 in front of O_2 on the left side which would result in 4 O atoms:

CH_4+color(red)(2)O_2-> CO_2+2H_2O

1:C:1

4:H:4

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Step-by-step explanation:

5 0
3 years ago
If a triangle is 12 inches high and has a 20 inch long hypotenuse then how wide is it?
Ber [7]

Answer:

The triangle should be 16 inches wide.

Step-by-step explanation:

\text {Use the Pythagorean Theorem to solve for the leg.}\\a^2 + b^2 =c^2

What we know:

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We need to solve for b. Solving for a while b is 12 would also be acceptable.

12^2 + b^2 = 20^2  \text {  OR  }   a^2 +12^2=20^2

We will use the first equation.

12^2 + b^2 = 20^2\\12 * 12 = 144\\20 * 20 = 400\\\\\boxed {144 + b^2 = 400}

\text {Subtraction property of equality: }\\144-144+ b^2 = 400-144\\\boxed {b^2 = 256}\\\\\text {Take the square root of 256: }\\\sqrt{256}=\sqrt{b^2} \boxed {16 = b}

The triangle should be 16 inches wide.

3 0
4 years ago
How do u solve radius
kotykmax [81]

Answer:

To calculate the radius of a circle by using the circumference, take the circumference of the circle and divide it by 2 times π.

The two formulas that are useful for finding the radius of a circle are C=2*pi*r and A=pi*r^2.

The diameter is 2 times larger than the radius

Step-by-step explanation:

Hope this helped

:)

8 0
3 years ago
3. Sohail needs to take a 4-day loan of $750 000 for his small business. How much interest will he need to pay if
coldgirl [10]

Answer:

180.82

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45.2055 x 4 days = 180.82

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3 years ago
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