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4 years ago

Help with math question please

Mathematics

1 answer:

Gemiola [76]4 years ago

7 0

Answer:

C) 3/4

Step-by-step explanation:

The equation for rate of change is (y2-y1)÷(x2-x1) These numbers come from two ordered pairs off the table of your choice (x1,y1) (x2,y2). I used the first two rows of the table so my two order pairs are (-8,-12)=(x1,y1) and (8,0)=(x2,y2) Next i plugged the ordered pairs into the equation:

0-(-12) ÷ 8-(-8)

In both the numerator(top) and the denominator(bottom) are subtracting a negative which is the same as adding so the fraction is 12/16. This can be further simplified by dividing the top and bottom by 4 to get the final answer of 3/4

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I NEED HELP PLZ WILL GIVE BRAINLIST FOR CORRECT ANSWER (NO LINKS)

Elena-2011 [213]

Answer:

n=6

Step-by-step explanation:

Six plus three = six

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4 0

3 years ago

95 students choose to attend one of three after school activities: footbal,l tennis or running. There are 28 boys. 38 students c

liberstina [14]

Answer:

34/95

Step-by-step explanation:

Since 38 students choose football and 23 students chose tennis, then 95 - 38 - 23 = 34 students chose running. The probability is 34 / 95.

6 0

4 years ago

PLEASEE HELPPP!!!

Harlamova29_29 [7]

Answer:

The amount is $649.46 and the interest is $49.46.

Step-by-step explanation:

STEP 1: To find amount we use formula:

A=P(1+rn)n⋅t

A = total amount

P = principal or amount of money deposited,

r = annual interest rate

n = number of times compounded per year

t = time in years

In this example we have

P=$600 , r=8% , n=4 and t=1 years

After plugging the given information we have

AAAA=600(1+0.084)4⋅1=600⋅1.024=600⋅1.082432=649.46

STEP 2: To find interest we use formula A=P+I, since A=649.46 and P = 600 we have:

A649.46II=P+I=600+I=649.46−600=49.46

5 0

4 years ago

The coordinates of quadrilateral PQRS are P(–3, 0), Q(0, 4), R(4, 1), and S(1, –3). What best describes the quadrilateral?

denis-greek [22]

Answer:

Square

Step-by-step explanation:

Plot the vertices of the quadrilateral PQRS on the coordinate plane (see attached diagram). The diagram shows that this is a square. Let's prove it.

1. Find all sides lengths:

$PQ=\sqrt{(-3-0)^2+(0-4)^2}=\sqrt{(-3)^2+(-4)^2}=\sqrt{9+16}=\sqrt{25}=5\\ \\QR=\sqrt{(0-4)^2+(4-1)^2}=\sqrt{(-4)^2+(3)^2}=\sqrt{16+9}=\sqrt{25}=5\\ \\RS=\sqrt{(4-1)^2+(1-(-3))^2}=\sqrt{(3)^2+(4)^2}=\sqrt{9+16}=\sqrt{25}=5\\ \\SP=\sqrt{(1-(-3))^2+(-3-0)^2}=\sqrt{(4)^2+(-3)^2}=\sqrt{16+9}=\sqrt{25}=5$

All sides have the same lengths.

2. Find the slopes of all lines:

$PQ:\ \dfrac{4-0}{0-(-3)}=\dfrac{4}{3}\\ \\QR:\ \dfrac{1-4}{4-0}=-\dfrac{3}{4}\\ \\RS:\ \dfrac{-3-1}{1-4}=\dfrac{4}{3}\\ \\SP:\ \dfrac{0-(-3)}{-3-1}=-\dfrac{3}{4}$