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lyudmila [28]
3 years ago
13

Find the value of x Please

Mathematics
1 answer:
natka813 [3]3 years ago
8 0

Answer:

7

Step-by-step explanation:

9x+18=2x+19 (corresponding angle)

or, 9x-2x=19-18

or, 7x=1

or, x= 7

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Six years ago, Lucia’s age was 1/3 the age she will be in 6 years. How old is Lucia now? Enter an integer.
Katen [24]

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1 year ago
Please help anyone I’m so lost
Alisiya [41]

The formula for the area of a triangle is A = 1/2 x b x height. But, we don't have the height here. To find the height, we can use the Pythagorean theorem.

With Pythagorean theorem, we'll be finding one of the legs. If we split the original triangle in 1/2 from the vertex to the base, we now have two right triangles. Both of these right triangles have a 30 cm hypotenuse and one 13 cm leg (remember we divided the entire original triangle in half).

30^2 = 13^2 + b^2

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b^2 = 731

b = \sqrt{731}

Now that we know the height of the triangle, we can find the area.

A = 1/2 x 26 x \sqrt{731}

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A = 351.48

The final area, rounded to the nearest whole number is 351 centimeters squared.

Note: Please know that depending on if the answer rounded \sqrt{731} before using it to find the area, the final answer may then be rounded to 352.

Hope this helps! :)

5 0
3 years ago
Would it make sense to describe the total weight of Mark's dinner in tons? Why or why not?​
tatyana61 [14]

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Step-by-step explanation:

It would not make sense to describe the total weight of Mark's dinner in tons. A ton is equivalent to 2000 pounds, which is 600 pounds heavier than what was considered the world's heaviest man. Depending on the context of the problem, I doubt Mark is eating such large amounts of food.

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