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aalyn [17]
3 years ago
15

I was super busy today, and didn't have time to finish my math homework. I really hope you guys can help me, as I need the point

s for this. All you need to do is to simplify the expressions shown. I already have the answers, I just need to know how to show my work. If it helps, the answers are: 11) 50/3 - 35/12n
12) -19.58x + 18.48
13) 13/20 - 10/7v
14) -23/20 + 13/30x
And any explanations would be very helpful, as it would help me a lot in the future.

Mathematics
1 answer:
ANTONII [103]3 years ago
3 0

Answer:

This isn't really an answer,but I used to use an app called "Photomath" it shows you the answer as well as the work.

Step-by-step explanation:


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I really need help. My math teacher doesn't want to help me and isn't responding to my emails. Could you explain how to solve ea
wolverine [178]

4. To determine if a triangle is a right triangle, given that you know the length of its sides, you have to check if its lengths follow the Pythagorean theorem.

This theorem states that the square of the hypothenuse (c) is equal to the sum of the squares of the legs of the triangle (a and b), following the expression:

a^2+b^2=c^2

The triangle is:

We have to check that a²+ b² is equal to c².

The square of the hypothenuse is:

\begin{gathered} c^2=10^2 \\ c^2=100 \end{gathered}

The sum of the squares of the legs of the triangle is:

\begin{gathered} a^2+b^2=8^2+6^2 \\ a^2+b^2=64+36 \\ a^2+b^2=100 \end{gathered}

As you can see, the sum of the squares of the legs of the triangle is 100, which is the same as the square of the hypothenuse. The triangle follows the Pythagorean theorem and can be considered a right triangle.

4 0
1 year ago
Triangle X Y Z is shown. The length of X Z is 12, the length of Y Z is 11, and the length of Y X is 6.
LenaWriter [7]

Answer:

84 degrees

Step-by-step explanation:

Applying the Cosine Rule (Choice 2 is the correct one)  :-

12^2 = 11^2 + 6^2 - 2*11*6 cos Y

144 = 121 + 36 - 132 cos Y

cos Y = (121 + 36 - 144) / 132

cos Y = 0.09848

Y = 84.3 degrees

7 0
2 years ago
Read 2 more answers
5 litres of paint cost 210 work out the cost of 50 L of paint​
krek1111 [17]

Answer:

2100

Step-by-step explanation:

5/210=50/x

x= 50*210 / 5

x= 2100

4 0
2 years ago
Can someone answer this for me? I haven’t done geometry in a while so I need a refresher.
Olin [163]

<u>I believe I have to calculate the area of the shape. I'll do that.</u>

Answer:

<em>Total area = 23.04 square m</em>

Step-by-step explanation:

<u>Area of a compound shape</u>

The shape shown in the figure can be divided into two smaller rectangles. We need to find their dimensions.

The single tick in the 2 m side indicates the other side also measures 2 m. This means the width of one of the smaller rectangles is 5.2m - 2 m = 3.2 m

The double tick in the 5.2 m also indicates the length of that smaller rectangle is 5.2 m. Thus the two rectangles have their respective areas as:

A1 = 5.2 m * 3.2 m = 16.64 square m

A2 = 2 m * 3.2 m = 6.4 square m

The total area is:

At = 16.64 square m + 6.4 square m = 23.04 square m

Total area = 23.04 square m

3 0
3 years ago
Need help solving this.
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