MATHEMATICS MIDDLE SCHOOL

you miss three out of 10 questions on a science quiz and four out of 15 questions on the math quiz which quiz has a higher percent of correct answers

Answers

Answer 1

Answer:

Answer:

4 out of 15 has the higher correct answer percentage

Step-by-step explanation:

Answer 2

Answer:

Step 1: Find the percentages.

If you missed 3/10 questions, then you got 7/10 right.

7/10 = 70%

If you missed 4/15 questions, then you got 11/15 right.

11/15 = 73%

So, you scored a 70% on the science quiz, and a 73% on the math quiz.

ANSWER:

The math quiz.

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When do you need to use two number lines to compare two fractions

Answers

You would use 2 number lines to compare fractions because if you were trying to see which fraction was larger than you would use a number line.

To see which one is bigger when comparing it

Q4
Help pleaseeeeeeee

Answers

a. The general equation for a circle centered at $(a,b)$ with radius $r$ is

$(x-a)^2+(y-b)^2=r^2$

The described circle has equation

$(x+3)^2+(y+2)^2=r^2$

We know the circle passes through the origin. This means that the equation above holds for $x=0$ and $y=0$ . The distance between any point on the circle and its center is the radius, so we can use this fact to determine $r$ :

$(0+3)^2+(0+2)^2=r^2\implies 9+4=13=r^2\implies r=√(13)$

So the circle's equation is

$(x+3)^2+(y+2)^2=(√(13))^2=13$

b. If the distance between point B and the center is less than $√(13)$ , then B lies inside the circle. If the distance is greater than $√(13)$ , it falls outside the circle. Otherwise, if the distance is exactly $√(13)$ , then B lies on the circle.

The distance from B to the center is

$√((-1+3)^2+(3+2)^2)=√(4+25)=√(29)$

$29>13$ , so $√(29)>√(13)$ , which means B falls outside the circle.

Multiply and simplify: y(2x+3y)(2x+3y)

Answers

Simplifying y(2x + 3y)(2x + 3y)

Multiply (2x + 3y) * (2x + 3y) y(2x * (2x + 3y) + 3y * (2x + 3y)) y((2x * 2x + 3y * 2x) + 3y * (2x + 3y))

Reorder the terms: y((6xy + 4x2) + 3y * (2x + 3y)) y((6xy + 4x2) + 3y * (2x + 3y)) y(6xy + 4x2 + (2x * 3y + 3y * 3y)) y(6xy + 4x2 + (6xy + 9y2))

Reorder the terms: y(6xy + 6xy + 4x2 + 9y2)

Combine like terms: 6xy + 6xy = 12xy y(12xy + 4x2 + 9y2) (12xy * y + 4x2 * y + 9y2 * y) (12xy2 + 4x2y + 9y3)

2xy+3y^2*2xy+3y^2
3y^2 * 3y^2

Distribute 2(x+10) please hurry