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2 years ago

Hello people ~factorise : 5x²+16x+3

Mathematics

2 answers:

atroni [7]2 years ago

7 0

Answer:

Step-by-step explanation:

Remark

If the trinomial is going to factor, it must factor as 5 and 1 paired with 3 and 1 as both 5 and 3 do not factor any further. They are prime numbers.

Let's try this:

(5x + 1) ( 1x + 3)

Both factors must contain an + otherwise something in the given equation would be - when the factors are expanded.

It looks like this works. 5 * 3x + 1x = 16x

son4ous [18]2 years ago

5 0

5x²+16x+3
5x²+15x+x+3
5x(x+3)+1(x+3)
(5x+1)(x+3)

Done!

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When you are given three side lengths for a triangle, how do you know which length to substitute for a, b, or c in the Pythagore

Romashka [77]

Answer:

When Sum of square of two Sides is equal to square of third side of triangle.

Step-by-step explanation:

Given:

Three side length of triangle are given we need find the which value to substitute for a, b, c in Pythagoras theorem.

First we will find the squares of all length, then we will check which two square of side are equal to square of third side as per Pythagoras theorem.

Hence the two side would according be a and b and third side will become c.

For example if length of triangle is given as 6 cm, 8 cm and 10 cm.

We will first take square of all

$6^2=36\\8^2=64\\10^2=100$

Now we can see that

$36+64=100\\6^2+8^2=10^2$

Now by Pythagoras theorem.

$a^2+b^2=c^2$

Hence we can say a = 6 cm, b = 8 cm, c= 10 cm

6 0

4 years ago

If Harrison is buying a bicycle for 340. what amount of sales tax must he pay if the sales tax rate is 7% ?

VARVARA [1.3K]

7% of 340
Note: "of" means multiplication
7% x 340 = .07 x 340 = 23.8

Answer: amount of sales tax is $23.80

6 0

3 years ago

Read 2 more answers

Russell's uncle buys a 7.5-pound bag of candy for Russell's birthday party. He puts 1 2 of the candy into a piñata. If Russell g

Amanda [17]

Answer:

7.5/2 = 3.75

3.75/5 = .75

he gets .75 pounds of candy

4 0

3 years ago

Find the area and perimeter of an isosceles trapezoid with a 60° base angles and bases 9 and 13.

BlackZzzverrR [31]

The trapezoid has two right triangles each with one side of length (13-9)2 = 4/2 = 2.

The other side of each right triangle is such that tan 60° = Heigth / 2

Then height = 2*tan60°.

The area of the trapezoid is height * (base 1 + base 2)/2

Then area = 2*tan (60°) * (13+9)/2 = 38.11

5 0

4 years ago

<img src="https://tex.z-dn.net/?f=8%20%5Csqrt%7B72%7D%20" id="TexFormula1" title="8 \sqrt{72} " alt="8 \sqrt{72} " align="absmid

Ghella [55]

Answer:

$8 \sqrt{72} = 8 \sqrt{3 \times 3 \times 2 \times 2 \times 2} \\ = 8 \times 3 \times 2 \times \sqrt{2} = 48 \sqrt{2}$

<h2><u>48√2</u> is the right answer.</h2>

7 0

3 years ago

Hello people ~factorise : 5x²+16x+3​

Hello people ~factorise : 5x²+16x+3