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1 year ago

Pls someone help i don’t know the answer

Mathematics

1 answer:

Mademuasel [1]1 year ago

8 0

Answer:

Step-by-step explanation:

The answer is A. 16+10+20= 46

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Someone please help!

Mila [183]

Answer:

RU is 8

Step-by-step explanation:

4 0

3 years ago

Prove that a triangle with the sides a - 1 cm to root under a

vivado [14]

Question is Incomplete, Complete question is given below.

Prove that a triangle with the sides (a − 1) cm, 2√a cm and (a + 1) cm is a right angled triangle.

Answer:

∆ABC is right angled triangle with right angle at B.

Step-by-step explanation:

Given : Triangle having sides (a - 1) cm, 2√a and (a + 1) cm.

We need to prove that triangle is the right angled triangle.

Let the triangle be denoted by Δ ABC with side as;

AB = (a - 1) cm

BC = (2√ a) cm

CA = (a + 1) cm

Hence,

${AB}^2 = (a -1)^2$

Now We know that

$(a- b)^2 = a^2+b^2 - 2ab$

So;

${AB}^2= a^2 + 1^2 -2\times a \times1$

${AB}^2 = a^2 + 1 -2a$

Now;

${BC}^2 = (2\sqrt{a})^2= 4a$

Also;

${CA}^2 = (a + 1)^2$

Now We know that

$(a+ b)^2 = a^2+b^2 + 2ab$

${CA}^2= a^2 + 1^2 +2\times a \times1$

${CA}^2 = a^2 + 1 +2a$

${CA}^2 = AB^2 + BC^2$

[By Pythagoras theorem]

$a^2 + 1 +2a = a^2 + 1 - 2a + 4a\\\\a^2 + 1 +2a= a^2 + 1 +2a$

Hence, ${CA}^2 = AB^2 + BC^2$

Now In right angled triangle the sum of square of two sides of triangle is equal to square of the third side.

This proves that ∆ABC is right angled triangle with right angle at B.

4 0

3 years ago

Identify the relationship then solve for x

kupik [55]

These are alternate interior angles.

you would set them equal to eachother and solve for x.

10x=9x+7

subtract 9x from 10x.

x=7

the answers are bolded.

I hope this helps

5 0

2 years ago

5. Estimate the value of √150 O between 5 and 6 O between 6 and 7 O between 7 and 8 O between 8 and 9

Digiron [165]

Answer:

basicaly your asking to be fulled so {{64

Step-by-step explanation:

3 0

2 years ago

Ed and Greg are working on their math homework. Ed says (2.0) is a solution to y < 4x - 8. Greg disagrees and says (2,0) is n

Tom [10]

Answer:

sorry I dont know

Step-by-step explanation:

5 0

3 years ago