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3 years ago

Select all that apply.

Mathematics

1 answer:

Levart [38]3 years ago

6 0

Answer:

Hello,

Answer :Rotation of 90° clockwise by the origin O, and translation 2 units to the left

Step-by-step explanation:

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The dot plot below shows the amount of time two random groups of students took to solve a puzzle:

Natalka [10]

It's hard to visually inspect a description of the plot. Let's calculate.

A = ( 1(65) + 1(67) + 1(77) + 1(79) + 1(88) + 1(90) + 2(92)+1(100)+2(102)+1(109)+1(110)+2(112)+1(122)+1(136)+1(139)) / 18 = 99.7

B = ( 2(50)+1(55)+1(61)+2(70)+2(80)+2(89)+1(95)+3(100)+1(110)+1(114))/ 16=82.1

Group A averaged around 17 or 18 seconds longer.

Answer: Group A

6 0

3 years ago

Find the coordinates of point S that lies along the directed line segment from R(-14, -1) to T(4, -13) and partitions the segmen

horsena [70]

Check the picture below.

I'd like to point out, is 1:5 from R to T, since that matters, that way we know the ratio from RS is the 1 and the ratio ST is the 5.

$\bf \left. \qquad \right.\textit{internal division of a line segment}
\\\\\\
R(-14,-1)\qquad T(4,-13)\qquad \qquad 1:5
\\\\\\
\cfrac{RS}{ST} = \cfrac{1}{5}\implies \cfrac{R}{T} = \cfrac{1}{5}\implies 5R=1T
\implies 
5(-14,-1)=1(4,-13)\\\\
-------------------------------\\\\$

$\bf { S=\left(\cfrac{\textit{sum of "x" values}}{\textit{sum of ratios}}\quad ,\quad \cfrac{\textit{sum of "y" values}}{\textit{sum of ratios}}\right)}\\\\
-------------------------------\\\\
S=\left(\cfrac{(5\cdot -14)+(1\cdot 4)}{1+5}\quad ,\quad \cfrac{(5\cdot -1)+(1\cdot -13)}{1+5}\right)$

8 0

3 years ago

Read 2 more answers

Which one is it?? <br> (btw the negative answer isn't right.)

Semmy [17]

Answer:

Step-by-step explanation:

Rule: a Minus power always goes to the opposite place to where it is. If it is in the denominator, it goes to the numerator. If it is the numerator, it goes to the denominator. The minus power does not affect the sign of the expression.

So you are right. The minus power does not give a minus answer.

$\dfrac{y^{-2}}{3y^4}=\dfrac{1}{3y^2y^4}=\dfrac{1}{3y^{(2 + 4)}} = \dfrac{1}{3y^6}$

Answer: A

4 0

4 years ago

32 assignments have been turned in. 14 didn't have names. The rest were put into 3 equal piles to grade over 3 days. How many as

denpristay [2]

Answer: is 6 because if you take away 32 and 14 you will get 18 and if you divide 18 into 3 equal piles for three days you will get 6.......graded assignments

Your Welcome:)

6 0

3 years ago

117 Divided by 3 and equal groups

Deffense [45]

117 divide 3 equals to 39 also they are equal groups as 39 x 3 equals to 117

8 0

3 years ago