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3 years ago

What is 5 minus 16 tenths

Mathematics

2 answers:

Arte-miy333 [17]3 years ago

6 0

3.4 Hopefully that worked

antoniya [11.8K]3 years ago

5 0

The answer would be 3.4

Hope that helped : )

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ANSWER ASAP!! Find the area of a triangle with legs that are: 12 m, 15 m, and 9 m.

Setler79 [48]

Answer:

Step-by-step explanation:

<h3>METHOD 1:</h3>

You can use the Heron's formula:

$A=\sqrt{p(p-a)(p-b)(p-c)}$

where

<em>p</em><em> - half of perimeter</em>

<em>a, b, c</em><em> - lengths of sides</em>

We have

$a=12m;\ b=15m;\ c=9m$

Calculate:

$p=\dfrac{12+15+9}{2}=\dfrac{36}{2}=18\ (m)\\\\A=\sqrt{18(18-12)+(18-15)(18-9)}\\\\A=\sqrt{(18)(6)(3)(9)}\\\\A=\sqrt{2916}\\\\A=54\ (m^2)$

<h3>METHOD 2:</h3>

Let's check that it is not a right triangle.

If the sum of the squares of the two shorter sides is equal to the square of the longest side, then this triangle is rectangular.

We have

$9m < 12m$

Check:

$9^2+12^2=81+144=225\\15^2=225$

This is a right trianglr wherew 9m and 12m are legs and 15m is a hypotenuse.

The formula of an area of a right triangle is:

$A=\dfrac{ab}{2}$

Substitute:

$A=\dfrac{(9)(12)}{2}=\dfrac{108}{2}=54\ (m^2)$

6 0

3 years ago

The value of 30, to one decimal place, is approximately what?

andrew-mc [135]

the answer is 5.5

when we write root of 30 in the calculater we get 5.477225575...

so we can round this off to one decimal point

and when we do the final answer will be 5.5

<em>hope</em><em> </em><em>that</em><em> </em><em>helps</em><em> </em><em>!</em>

8 0

3 years ago

It’s length is 31 feet and it’s width is 24 feet. Suppose each pack of seed covers 12 square feet. How many pack of seed will he

OverLord2011 [107]

Answer:
62 packets

Steps:
31*24= 744
744/12= 62

6 0

2 years ago

Solve for p: a = 2πpw

MaRussiya [10]

Hello there.

<span>Solve for p: a = 2πpw

</span> $\frac{a}{6.283185w
}$

4 0

2 years ago

Yony wants to buy a scooter that is $129. This is $24 more than 3 time sthan what he saved last month. How much did he save last

9966 [12]

44.33 is the right answer

3 0

2 years ago