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stira [4]
3 years ago
7

12 minutes to drive 30 laps and 48 minutes to drive 120 laps are they equivalent

Mathematics
2 answers:
Flauer [41]3 years ago
6 0

30/12=in 1 min you drive 2.5lap

120/48=in 1 min you drive 2.5lap

yes they are equivalant

olga nikolaevna [1]3 years ago
5 0

If they are equivalent, you should be able to cross multiply and get a true statement.

12/30 = 48/120

12(120) = 30(48)

1440 = 1440

This is a true statement, therefore they ARE equivalent.

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If the point x,y is on the y-axis which of the following is true x=0 y=0​
xz_007 [3.2K]

Hi there!

Answer:

x=0

<u><em>How it works:</em></u>

In coordinate planes, x always goes first. Then the y comes next. If x is 0, and y is also zero, none of those would be in the y axis place...

If the x is in 0 and the y is 1,2,3,4,5.... then the y axis would be in the y axis and x would just stay the same...

If the x is 1, then the y would be 0 which means that there would be nothing in the y axis.

Therefore, the answer is x=0..

4 0
3 years ago
A -145° angle lies in which of the following quadrants?<br><br> I<br> II<br> III<br> IV
Ahat [919]

The angle is in the third quadrant.

4 0
3 years ago
What is the simplified form of the following expression? 2√27+√12-3√3-2√12
LiRa [457]

Answer:

√3

Step-by-step explanation:

The given expression to be simplified is

2 \sqrt{27}+\sqrt{12}-3\sqrt{3}-2 \sqrt{12}

but

2 \sqrt{27}=2\sqrt{9 \times 3}=2 \times \sqrt{9}\times \sqrt{3}=2 \times 3 \times\sqrt{3}=6 \sqrt{3}

\sqrt{12}=\sqrt{4\times3}= \sqrt{4}\times \sqrt{3}=2\sqrt{3}

Since √12=2√3,this implies that,

2\sqrt{12}=2\times2\sqrt{3}=4 \sqrt{3}

Therefore,

2 \sqrt{27}+\sqrt{12}-3\sqrt{3}-2 \sqrt{12}=6\sqrt{3}+2\sqrt{3}-3 \sqrt{3} -4\sqrt{3}

=(6+2-3-4)\sqrt{3}

=\sqrt{3}

The simplified form of ,

2 \sqrt{27}+\sqrt{12}-3\sqrt{3}-2 \sqrt{12} is √3

8 0
3 years ago
Amtrak reduced its roundtrip ticket from Boston to Washington by $49. The sale price was $140. What was the original price?
Margarita [4]
If it was reduced by 49 to 140 than obviously the original price was 189$ 
3 0
3 years ago
PLz help I will give brainliest!!!!! and extra points
Natalija [7]

Hey there!

<u></u>

The answer to your question is 95.55<u></u>

<u></u>

<u>Formulas:</u>

<u></u>

<em>Area of semi-circle = </em>\frac{1}{2}(\pi r^2)<em></em>

<em>Area of rectangle = </em>lw<em></em>

<em>Area of triangle = </em>\frac{bh}{2}<em></em>

<em></em>

<u>Now solve:</u>

<em>semi-circle</em>

\frac{1}{2}\pi3^2

\frac{1}{2}\pi9

4.5\pi

<em>(We will use 3.14 as approx. for pi)</em>

<em />4.5 * 3.14\\23.55

<em>rectangle</em>

10(6)\\60

<em>triangle</em>

<em />\frac{4(6)}{2}<em />

<em />\frac{24}{2} \\12<em />

<em>Now add them all together:</em>

<em />23.55+60+12\\95.55<em />

<em />

Have a terrificly amazing day!

<em />

3 0
3 years ago
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