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nlexa [21]
3 years ago
12

The formula for the area of a triangle Is A = -bh, in which b represents the length of the base and h

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
8 0

Step-by-step explanation:

something went very wrong with the problem description.

the area of a triangle is

base × height / 2

so, we know the area, and we know the height.

therefore

470 = base × 20 / 2 = base × 10

base = 470/10 = 47 mm

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Will mark brainliest!!!Solve for each variable
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On a test that has a normal distribution, a score of 19 falls one standard deviation below the mean, and a score of 40 falls two
nexus9112 [7]

Hi there!

We can use the following equation:

\large\boxed{z = \frac{x-\mu}{\sigma}}

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Plug in the knowns for both and rearrange to solve for the mean:

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Other given:

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5 0
2 years ago
How many ways can Mrs. Sullivan choose two
sveta [45]

In 371 ways Mrs. Sullivan choose two  students from 27 to help put away calculators at  the end of class

Step-by-step explanation:

let us assume that Mrs.Sullivan  wants to choose 2 students from a group of 27 students

So ,in the first choice we have  27 students

In the  second choice we have  26 choices

So Mrs.Sullivan has = 27 × 26 = 702 ways

But  each group repeated twice,in order to avoid that we will divide the answer by 2

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7 0
3 years ago
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