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3 years ago

Please help it’s matching and sentence length. I’m putting 20 points on this

Mathematics

1 answer:

Finger [1]3 years ago

6 0

Answer:

What is the arc length and sector area for the following circle. Round your answer to 4 decimal places. *

Step-by-step explanation:

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What is the purpose of "completing the square"?

zysi [14]

Step-by-step explanation:

When you complete the square, you change the equation so that the left side of the equation is a perfect square trinomial. But mainly completing the square is a technique that transforms your quadratic equation from an equation that can't be factored into one that can.

8 0

3 years ago

Which numbers are correctly in scientific notation

Genrish500 [490]

Answer:

All except the second, third, fourth and seventh option.

Step-by-step explanation:

Scientific notation is always a number more than or equal to 1, less than 10 multiplied by 10 to a power. Anything else is considered wrong.

x•10^n while 1<=x<10

7 0

3 years ago

Help me i'll give brainlist

Levart [38]

Answer:

$x=\frac{1}{2}$

Step-by-step explanation:

equation of a circle: $(x - h)^2+(y-k)^2=r^2$

where (h, k) = center and r = radius

From inspection, we can see that the center of the circle = (0, 0)

and the radius = 1

$\implies (x - 0)^2+(y-0)^2=1^2$

$\implies x^2+y^2=1$

Substitute $y=\frac{\sqrt{3}}{2}$ into $x^2+y^2=1$ and solve for $x$ :

$\implies x^2+(\frac{\sqrt{3}}{2})^2=1$

$\implies x^2+\frac{3}{4}=1$

$\implies x^2=\frac{1}{4}$

$\implies x=\pm \sqrt{\frac{1}{4}}$

$\implies x=\pm\frac{1}{2}$

As point P is in quadrant 1, $x$ is positive, so $x=\frac{1}{2}$

7 0

2 years ago

Round the number 95,498 to the ten thousands place value

dezoksy [38]

100,000 (sorry if I'm wrong)

8 0

4 years ago

Simplify using PEMDAS <br><br>18-(3x5)+(2B-3B)

KonstantinChe [14]

First, you need to multiply 3x5 and Sunday you 2B-3B. Now the problem is 18-15+-1. Since there is no exponents, multiplication, or division in this problem anymore, we are going to add. 15+-1=0. Now we have 18-0. 18-0=18. Therefore the answer is 18

6 0

3 years ago