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3 years ago

In a class of 60 students 8 will be left handed. If a class includes 20 lefties, estimate how many students are in the class.

Mathematics

1 answer:

svlad2 [7]3 years ago

8 0

Answer:

150

Step-by-step explanation:

60/8=x/20. Solve for x. So cross multiply 20•60=1200 divided by 8=150

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Help please????????????

Aleks [24]

The answer is b i think

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3 years ago

P(x) = x3 - 2x2 + 2x<br> What are the real and complex zeros of the equation

vesna_86 [32]

Given:

The polynomial is

$p(x)=x^3-2x^2+2x$

To find:

The real and complex zeros of the equation.

Solution:

We have,

$p(x)=x^3-2x^2+2x$

For zeros, p(x)=0.

$x^3-2x^2+2x=0$

$x(x^2-2x+2)=0$

$x=0\text{ and }x^2-2x+2=0$

The real value of x is 0. The equation $x^2-2x+2=0$ will give complex roots. Here, a=1, b=-2 and c=2.

Using quadratic formula, we get

$x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}$

$x=\dfrac{-(-2)\pm \sqrt{(-2)^2-4(1)(2)}}{2(1)}$

$x=\dfrac{2\pm \sqrt{4-8}}{2}$

$x=\dfrac{2\pm \sqrt{-4}}{2}$

On further simplification, we get

$x=\dfrac{2\pm \sqrt{-1}\sqrt{4}}{2}$

$x=\dfrac{2\pm 2i}{2}$

$x=\dfrac{2(1\pm i)}{2}$

$x=1\pm i$

Therefore, the real zero is 0 and the complex zeros are 1+i and 1-i.

5 0

3 years ago

5(10k + 1) + 2(2 +8k)<br> Choose 1 ansvar

MrRa [10]

Answer:

50k + 5 + 4 + 16k

66k + 9

Step-by-step explanation:

4 0

3 years ago

Ramon is having some friends over after a baseball game. Ramon's job is to make a vegetable dip. The ingredient for the recipe a

lana66690 [7]

Answer: Part A he uses more buttermilk

Part B yes he uses the same amount of parley and scallions

Step-by-step explanation:

Part A: 1/2 is = to 4/8 and 5/8 is more than 4/8

Part B: 3/4 times 2 is 6/8 so parley and scallion are the same

hope this helps mark me brainliest if you can

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3 years ago

Graph the solution of 5 ≤ 9 - 4a

Svet_ta [14]

First you wanna Solve for a to make your answer:

a <span>≤ 1

Then just graph:</span>

6 0

3 years ago