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Kobotan [32]
3 years ago
7

Lin and andre biked home from sxhool at a steady pace. Lin biked 1.5km and it took her 5 minutes. Andre biked 2km and it took hi

m 8 minutes. who was biking faster explain??? pl-zzzzzzzzzzzzzzzzzzzzzZzZzzZZZZZZZZZ i need hlpe giving out 100 points out and marking it the brainest.....
Mathematics
2 answers:
ch4aika [34]3 years ago
4 0
Lin : 1.5 km in 5 minutes = 1.5 / 5 = 0.3 km per minute
Andre : 2 km in 8 minutes = 2 / 8 = 0.25 km per minute

so Lin is biking faster
raketka [301]3 years ago
4 0

Answer:

Lin- 1.5 / 5 = 0.3 km per minute

Andre- 2 / 8 = 0.25 km per minute

Lin is faster

Step-by-step explanation:


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Equation of a line, in general form, that is perpendicular to 2x-3y + 7 = 0 and passes through the point (-3/4, 1)
TEA [102]

Answer:

  12x +8y +1 = 0

Step-by-step explanation:

You can write the equation by swapping the x- and y-coefficients and negating one of them. Then compute the constant that makes the line go through the given point. You can do that like this:

  3(x-(-3/4)) +2(y -1) = 0

  3x +9/4 +2y -2 = 0 . . . . eliminate parentheses

  3x +2y +1/4 = 0 . . . . . . . simplify

To eliminate the fraction, multiply by 4:

  12x +8y +1 = 0

_____

<em>Comment on the equation</em>

The line ax+by=0 passes through the origin. Replacing x and y with x-h and y-k, respectively, makes the line pass through the point (h, k). That's what we did above to make the line pass through the given point.

The business of swapping coefficients and negating one causes the slope of the new line to be the negative reciprocal of the slope of the original line. That is what makes the new line perpendicular to the original.

4 0
3 years ago
What does that equation equal??
sattari [20]

Answer:

y = 5.543

Step-by-step explanation:

Your y = 7(1 - 0.021)^11 is evaluated as follows:

y = 7(0.979)^11

y = 7(0.7918

y = 5.543

3 0
3 years ago
Liang is ordering new tires for his car. The tires he has have a circumference of 28π inches and a wheel rim with a circumferenc
skelet666 [1.2K]

The radius of tire is larger than radius of wheel by 5 inch

Step-by-step explanation:

We know that circumference of the circle is 2πr where “r” is the radius of the circle

Circumference refers to the dimension of the periphery of the circle. Since tires are put on the periphery of the wheel hence, we considered the circumferential aspect of the wheel.

Given-

Circumference of tires= 28π inches

2πr= 28π cancelling the common term “π” both sides

r (radius of the tires) = 14 inches

Circumference of the wheel rims= 18π

2πr= 18π cancelling the common term “π” both sides

r (radius of the tires) = 9 inches

Difference between the radius= 14-9= 5 inches

Hence, the difference between the radius of tires and the radius of the wheels is 5 inches

 

4 0
3 years ago
In triangle ABC, the measure of angle B is 90 degrees, BC=16, and AC=20. triangle DEF is similar to triangle ABC, where vertices
kkurt [141]
 <span>The third side of triangle ABC is AB. Using the Pythagorean Theorem, its length is 12. 
12² + 16² = 20² 

∠F is congruent to ∠C and so the sin(∠F) = sin(∠C) 

The sin(∠C) = opposite/hypotenuse 
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So the answer is 0.6.</span>
6 0
3 years ago
(please help) List the three lowest numbers that have the following characteristics. Work must be shown. 60 is a multiple of the
Paul [167]

Answer:

3, 6, and 15

Step-by-step explanation:

Notice that if 60 is a multiple, the numbers in question could have the same factors as 60.

So let's look at 60's prime factors:

60 = 2 * 2 * 3 * 5

we also know that 3 is a factor, so the factor 3 must be included in all three options, we also know that 4 is NOT a factor, so both factors 2 cannot be included (but only one of them could).

So, in order to build the lowest possible numbers that verify such conditions, we can use:

3

3 * 2 = 6

since 3 or 2 cannot be repeated, the next smaller would be:

3 * 5 = 15

6 0
3 years ago
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