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3 years ago

I REALLY NEED HELP I FORGOT HOW TO DO THIS :(

Mathematics

1 answer:

Elena-2011 [213]3 years ago

3 0

Answer:

117.8

Step-by-step explanation:

i used heron's formula

√s(s-a)(s-b)(s-c)

s= (20+16+33)/2 = 34.5

√34.5(34.5-20)(34.5-16)(34.5-33)

= 117.8

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Find the variable 15 = 5 − 13

Lyrx [107]

Answer:

0.4

Step-by-step explanation:

15 = 5p - 13

-13 = 5p -13

---------------- ( subtract 13 on both sides )

<u> 2 = 5p</u>

5 = 5p

---------------- ( divide 2 by 5 )

p = 0.4

( p equals 0.4 )

7 0

3 years ago

What is the area? Please explain steps so I can attempt to understand

yarga [219]

Answer:

$12 \sqrt{2}$

Step-by-step explanation:

you can use hypotenuse formula

45-45-90 isosceles right triangle

so, 45= x

x² + x² = 24²

2x² = 24²

x²= 24.12

x= $\sqrt{288} = 12 \sqrt{2}$

or :

you can use this rule: if you see a 45 45 90 isosceles right triagngle (you can look picture) 45=a cm and 90 = $a\sqrt{2}$

so ;

$a \sqrt{2} = 24$

a= $12 \sqrt{2}$

hope this helps ^-^

3 0

4 years ago

Thomas made 8700mL of tomato soup. He packed 1.6L of the soup in his kids' lunches. He then froze half of the remaining soup. Ho

Nitella [24]

Let's convert the 8700mL to L so that we can use the information in the problem more easily and swiftly. Since 1000mL is the same thing as 1L, we can say that 8700 mL of tomato soup is equal to 8.7L of tomato soup.

First, we know that he removed 1.6L to put in his kids' lunches. Thus, we now have 7.1L remaining. Now, we know that he froze half of this. Half of 7.1L is 3.55L (7.1L/2 = 3.55L), which means that he froze 3.55L. Finally, we will need to convert this back to mL. Since 1L is equal to 1000mL, we can multiply 3.55 by 1000 to get 3550mL.

5 0

4 years ago

. Write the quadratic equation in factored form. Be sure to write the entire equation. x^2 - 5x - 24 = 0

Viefleur [7K]

Answer:

$(x+3)(x-8)=0$

Step-by-step explanation:

First, write out the equation as it is given in the problem:

$x^{2}-5x-24=0$

Now, you have to split up the "-5x" to get to factored form. The way to do this is to look for <em>the factors of "a" times "c" that sum to "b"</em>:

So, in this problem, a=1, b=-5, and c=-24. So, find the factors of (1*-24) that sum to (-5). To clarify, (1*-24)=-24, so you have to find factorsof -24 that sum to -5.

Let's write out a list of factors.

$1,-24---1+-24=-23no\\-1,24---1+24=23no\\2,-12---2+-12=-10no\\-2,12----2+12=10no\\3,-8---3+-8=-5yes$