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3 years ago

Need help, please thanks

Mathematics

2 answers:

AleksandrR [38]3 years ago

5 0

Here's the answers to all the questions

Otrada [13]3 years ago

4 0

These r the answers for ur questions

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I dont even care if its wrong atp, I JUST NEED ANSWERS

salantis [7]

Answer:

Here ,

2x-30° +70° +x-10° = 180° ( sum of triangle is 180°)

3x+30 =180°

3x=150°

x=50°

6 0

2 years ago

What is -3/4 + 2 3/4

cestrela7 [59]

The answer to this equation will be 2.

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3 years ago

When the distributive property is used to solve the equation 5(2 + 4) = 32 - 5, what is the next step?

coldgirl [10]

Answer:

no solution

Step-by-step explanation:

5(2 + 4) = 32 - 5

Simplify

5×6=32−5

simplify

30=32−5

Simplify

30=27

There is no solution

3 0

3 years ago

4 Jennifer weighs 99 lb. Her weight is

Nady [450]

I’m really sorry. I really try to figure this out but I’m Real bummed out that I can’t even get this. What even is this question? Like tell me the answer if you can even find out ._.

5 0

3 years ago

What is the area of this triangle ?

oee [108]

Answer:

Area of triangle is 9.88 units^2

Step-by-step explanation:

We need to find the area of triangle

Given E(5,1), F(0,4), D(0,8)

We will use formula:

$Area\,\,of\,\,triangle =\sqrt{s(s-a)(s-b)s-c)} \\where\,\, s = \frac{a+b+c}{2}$

We need to find the lengths of side DE, EF and FD

Length of side DE = a = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

Length of side DE = a = $=\sqrt{(5-0)^2+(1-8)^2}\\=\sqrt{(5)^2+(-7)^2}\\=\sqrt{25+49}\\=\sqrt{74}\\=8.60$

Length of side EF = b = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

Length of side EF = b = $=\sqrt{(0-5)^2+(4-1)^2}\\=\sqrt{(-5)^2+(3)^2}\\=\sqrt{25+9}\\=\sqrt{34}\\=5.8$

Length of side FD = c = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

Length of side FD = c = $=\sqrt{(0-0)^2+(8-4)^2}\\=\sqrt{(0)^2+(4)^2}\\=\sqrt{0+16}\\=\sqrt{16}\\=4$

so, a= 8.60, b= 5.8 and c = 4

s = a+b+c/2

s= 8.6+5.8+4/2

s= 9.2

Area of triangle= $=\sqrt{s(s-a)(s-b)s-c)}\\=\sqrt{9.2(9.2-8.6)(9.2-5.8)(9.2-4)}\\=\sqrt{9.2(0.6)(3.4)(5.2)}\\=\sqrt{97.5936}\\=9.88$

So, area of triangle is 9.88 units^2

4 0

3 years ago