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4 years ago

3/8 - 10/13 -7/5 -30/104 -41/104 -39/80

Mathematics

1 answer:

salantis [7]4 years ago

4 0

Answer:

-41/104

Step-by-step explanation:

Simplify 3/8 and 10/13 then calculate the least common multiple, calculate multipliers, make equivalent fractions and Add fractions that have a common denominator for your final answer.

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How much less than 3x2−7x+9 is 2x2+4x−8? What is the value of the result when x=2?

DIA [1.3K]

3x^2 - 7x + 9 - (2x^2 + 4x - 8).....distribute the - thru the parenthesis
3x^2 - 7x + 9 - 2x^2 - 4x + 8....combine like terms
x^2 - 11x + 17 <== this is how much less it is

x^2 - 11x + 17.....when x = 2
2^2 - 11(2) + 17 =
4 - 22 + 17 =
21 - 22 =
-1 <====

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4 years ago

The perimeter formula for a rectangle is 2l + 2w, where l is the length and w is the width.

erastovalidia [21]

Answer:

Correct.

Step-by-step explanation:

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3 years ago

In ΔABC, the measure of ∠C=90°, the measure of ∠A=41°, and BC = 33 feet. Find the length of AB to the nearest tenth of a foot.

Darya [45]

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Step-by-step explanation:

sin = 33

1 x

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3 years ago

What are the solutions to the equation x² = 256?

tester [92]

The correct answer would be 128.

7 0

4 years ago

Read 2 more answers

I need some help please!

kvv77 [185]

Answer:

See below

Step-by-step explanation:

Given :-

y || z

To Prove :-

m∠5 + m∠2 + m∠6 = 180°

Proof :-

Here we are required to prove that ,

$\rm\implies m\angle 5 + m\angle 6 + m\angle 2 = 180^o$

And here it's given that , y || z . Therefore ,

∠3 = ∠6 ( alternate interior angles )
∠1 = ∠5 ( alternate interior angles )

Now we know that the measure of a straight line is 180°. Therefore ,

$\rm\implies m\angle 1 + m\angle 2 + m\angle 3 = 180^o \\\\\implies\boxed{\rm m\angle 5 + m\angle 6 + m\angle 2 = 180^o}$

From 1 and 2 .

Hence Proved !

7 0

3 years ago