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3 years ago

Loretta swam 3 laps in 12.09 seconds. If she swam these three laps equally as fast, how long did it take her to swim two laps

Mathematics

1 answer:

JulsSmile [24]3 years ago

4 0

Answer:

4.03 Seconds

Step-by-step explanation:

12.09 divided by 3 laps

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18 first-graders and 72 other students attended a school assembly. What percentage of the students at the assembly were first-gr

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Answer:20%

Step-by-step explanation:

You add 72 plus 18 and get 100 then you find what 100 divided by 5 is.

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what is the solution to the system of equations shien on the graph? A.(0,5) B.(-2,1) C.(0,-1) D.(1,-2)

VLD [36.1K]

Solution is where the lines intersect. It's is (-2 , 1)

Answer is B.(-2,1)

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3 years ago

Martin would like to start training to run a Martin the first week he runs a total of 15 miles he would like to run 30% more mil

Mice21 [21]

Answer:

Third week = 23.35 miles

Step-by-step explanation:

First week total miles = 15 miles

he would like to run 30% more miles each week than the week before

Second week = 15 miles + (30% of 15 miles)

= 15 + (30% * 15)

= 15 + (0.3 * 15)

= 15 + 4.5

= 19.5 miles

Second week = 19.5 miles

Third week = 19.5 miles + (30% of 19.5 miles)

= 19.5 + (30% * 19.5)

= 19.5 + (0.3 * 19.5)

= 19.5 + (5.85)

= 23.35 miles

Third week = 23.35 miles

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3 years ago

Perform the following operations and write the answers in radical form.

strojnjashka [21]

Given:

Part A: $\sqrt{7}+\sqrt{3}+\sqrt{98}-\sqrt{18}$

Part B: $3 \sqrt{5}-3 \sqrt{11}+2 \sqrt{121}-3 \sqrt{90}$

To find:

The simplified radical form.

Solution:

Part A: $\sqrt{7}+\sqrt{3}+\sqrt{98}-\sqrt{18}$

$\sqrt{98}=\sqrt{7^2 \times 2} =7 \sqrt{2}$

$\sqrt{18}=\sqrt{3^2 \times 2} =3 \sqrt{2}$

Substitute these in the given expression.

$\sqrt{7}+\sqrt{3}+\sqrt{98}-\sqrt{18}=\sqrt{7}+\sqrt{3}+7\sqrt{ 2}-3\sqrt{ 2}$

Add or subtract the coefficient of same radical.

$=\sqrt{7}+\sqrt{3}+(7-3)\sqrt{ 2}$

$=\sqrt{7}+\sqrt{3}+4\sqrt{ 2}$

Part B: $3 \sqrt{5}-3 \sqrt{11}+2 \sqrt{121}-3 \sqrt{90}$

$2 \sqrt{121}=2\sqrt{11^2}$

$=2\times 11$

= 22

$3 \sqrt{90}=3\sqrt{3^2 \times 10}$

$=3\times 3 \sqrt{10}$

$=9 \sqrt{10}$

Substitute these in the given expression.

$3 \sqrt{5}-3 \sqrt{11}+2 \sqrt{121}-3 \sqrt{90}=3 \sqrt{5}-3 \sqrt{11}+22-9 \sqrt{10}$

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3 years ago

ILL GIVE BRAINLIST ON WHOEVER GETS IT RIGHT

Allisa [31]

Answer:

Since a 360 degree rotation doesn't change any point of the triangle, the image attached is the correct answer.

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