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2 years ago

For the rectangle shown, which equation can be used to find the value of x?

Mathematics

2 answers:

sweet-ann [11.9K]2 years ago

7 0

Answer:

The 4th one: 3^2 + 13^2 = x^2

Step-by-step explanation:

The <u>pythagorean theorem</u> is a^2 + b^2 = c^2. In this case 3 is a, 13 is b, and x is c.

happy to help

saw5 [17]2 years ago

6 0

Actually a is 3, b is x, and 13 is c. the c is always across from the right angle

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Barney is eight years older than Nemo. In seven years the sum of their ages will be 46. How old is Barney now?.

olga55 [171]

Let's represent Nemo's age with an n.

Barney is 8 years older so his age is nemo's plus 8. That is, Barney's age is n + 8

In seven years they will each be the age they are now plus 7. So, Nemo will be n + 7 and Barney will be n + 8 + 7. If the sum of their ages will be 46 we know that when we add these expressions we should get 46, so let's set the sum to 46 and solve for n.

n + 7 + n + 8 + 7 = 46
2n + 22 = 46
2n = 46 - 22
2n = 24
n = 12

That means that Nemo's age is 12.
Since Barney is 8 years older his age is 12 + 8 = 20.

To check our work we see that in 7 years Nemo will be 12 + 7 = 19 and Barney will be 20 + 7 = 27. Together that is 19 +27 = 46 as expected.

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4 years ago

3.54 times 10 to the -4 power

charle [14.2K]

Answer:

0.000354

Step-by-step explanation:

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3 years ago

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What is the equivalent ratio to 16 56

julia-pushkina [17]

Answer:

The number 2

Step-by-step explanation:

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3 years ago

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Mark rolls 2 fair dice and adds the results from each. Work out the probability of getting a total of 5. Please help if you can!

Allisa [31]

Answer:

13.8%

Step-by-step explanation:

I have created a table that shows all of the possibilities that two die's can roll when summed up. If we count all of these possibilities we can see that there are a total of 36 outcomes. From all of these outcomes we can also see that only 4 outcomes sum up to be a total of 5. Therefore, we have to divide the number of times 5 is a possibility by the total number of outcomes to get the probability of actually getting a sum of 5.

5 / 36 = 0.138 ... multiply by 100 to get percentage

0.138 * 100 = 13.8%

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3 years ago

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Vladimir79 [104]

I think the answer is 10-11

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3 years ago