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3 years ago

9

At a track meet, Jacob and Daniel compete in the 220m hurdles. Daniel finishes in 3/4 of a minute. Jacob finishes with 5/12 of a

minute remaining. Who ran the race in the faster time?

2 answers:

baherus [9]3 years ago

8 0

Daniel: 3/4=.75 = 75%
Jacob: 5/12= .41 = 41%
So it would be Jacob that is faster

lakkis [162]3 years ago

6 0

5/12 is faster because it is a smaller fraction of the minute

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2. Find the sum of the digits of each multiple of 9 below.

FrozenT [24]

Answer:

Step-by-step explanation:

Take the sum of each answer and add the two digits together.
9.2=18 1+8=9

9.3=27 2+7=9

9.4=36. 3+6=9

The sum of the digits added together will always equal 9

4 0

2 years ago

Calculate the average (arithmetic mean) of the list of numbers shown in the table. (rounded to the nearest tenth)

goblinko [34]

Hello!

<h3><u><em>Answer</em></u></h3>

The mean of the numbers shown in the table is C. 50.5

<h3>__________________________________________________</h3><h3><em><u>Explanation</u></em></h3>

To calculate the mean, simply add up all the numbers and divide by the amount of numbers there are in the list.

18 + 55 + 101 + 96 + 55 + 18 + 22 + 23 + 22 + 57 + 88 = 555

There are 11 numbers in the table, so we divide by that.

555 / 11 = 50.45...

Finally, round to the nearest tenth: 50.5

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3 0

3 years ago

Find the perimeter of a quadrilateral with vertices at C (-1, 2), D (-2, -1), E (2, -2), and F (1, 1). Round your answer to the

babymother [125]

Answer:

B 12.68

Step-by-step explanation:

you will need to find the distance between each segment-

so the length of DC, CF, FE, ED

$d=\sqrt{(x_{2}-x_{1}) ^{2}+(y_{2}-y_{1}) ^{2} }$

DC:

D(-2,-1) C(-1,2)

$d=\sqrt{(-1--2)^{2} +(2--1)^{2} } \\d=\sqrt{1^{2}+3^{2} } \\d=\sqrt{10} =3.16$

CF:

C(-1,2) F(1,1)

$d=\sqrt{(1--1)^{2} +(1-2)^{2} } \\d=\sqrt{2^{2}+-1^{2} } \\d=\sqrt{4+1} \\d=\sqrt{x} 5=2.24$

FE

F(1,1) E(2,-2)

$d=\sqrt{(2-1)^{2} +(-2-1)^{2} } \\d=\sqrt{1^{2} +(-3)^{2} } \\d=\sqrt{1+9} \\d=\sqrt{10}= 3.16$

ED

E(2,-2) D(-2,-1)

$d=\sqrt{(-2-2)^{2} +(-1--2)^{2} } \\d=\sqrt{(-4)^{2}+1^{2} } \\d=\sqrt{16+1} \\d=\sqrt{17}= 4.12\\$

3.16+2.24+3.16+4.12= 12.68

4 0

3 years ago

Lillian was making some pizzas. She used pound of pepperoni, pound of cheese, and pound of tomatoes on each one.

Eduardwww [97]

She will use 12 pounds.
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7 0

3 years ago

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dedylja [7]

Answer:

Step-by-step explanation:

since -1≤sin2x≤1 no x values would satisfy the equation

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2 years ago