2 years ago

(a - b)(a2 + ab + b2)

Mathematics

1 answer:

Colt1911 [192]2 years ago

8 0

Answer:

THE ANSWER IS THIS FOR THE QUESTION UP TOP

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the first six terms of a pattern are given below. write an equation to represent the pattern. 8,13,18,23,28 and 33

Karolina [17]

U just add 5 each time

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3 years ago

Please help i need it for a test, don't mind the 2 points thing

alex41 [277]

Answer:

the answer can be anything greater then 1.35 but less then 1.4. so like 1.7

Step-by-step explanation:

7 0

2 years ago

3) Solve each equation using the quadratic formula. Show<br> a. x2 – 3x – 10 = 0

Naya [18.7K]

Answer:

Step-by-step explanation:

The quadratic formula of a quadratic equation

$ax^2+bx+c=0\\\\\text{If}\ b^2-4ac>0\ \text{then the equation has two solutions}\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

$\text{If}\ b^2-4ac=0\ \text{then the equation has one solution}\ x=\dfrac{-b}{2a}$

$\text{If}\ b^2-4ac$

We have:

$x^2-3x-10=0\to a=1,\ b=-3,\ c=-10\\\\b^2-4ac=(-3)^2-4(1)(-10)=9+40=49>0\\\\x=\dfrac{-(-3)\pm\sqrt{49}}{2(1)}=\dfrac{3\pm7}{2}\\\\x=\dfrac{3-7}{2}=\dfrac{-4}{2}=-2\\or\\x=\dfrac{3+7}{2}=\dfrac{10}{2}=5$

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3 years ago

Find the size of the angle marked a and b on the diagram

Lana71 [14]

Answer:

Step-by-step explanation:

we know that the total angles around the big triangle are 180° so, we know the right angle is 90° and we are told that one of the angles is 52° so just find the last angle by

180 = 90 + 52 + X

180 - 90 - 52 = X

38 = X

b = 38°

a = 52°

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2 years ago

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kvv77 [185]

Answer:

$C=9.4\pi$ meters