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JulsSmile [24]
2 years ago
11

A cyclist travels 12 km from home to the park.

Mathematics
2 answers:
Volgvan2 years ago
5 0

Answer:

Step-by-step explanation:

12 km to the park in 30 mins so multiply the 12 km by 2 to make a whole hour.

12*2= 24 km/h

Leno4ka [110]2 years ago
3 0

Answer:

Speed = 24 km/h

Step-by-step explanation:

Speed =  Distance / Time

A cyclist travels 12 km from home to the park.

She leaves home at 13:00 and arrives at the park at 13:30.

Distance = 12 km

Time = 0.5 Hours

Speed =  12 / 0.5

Speed = 24 km/h

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A sales associate in a department store earns a commission on each suit and each pair of shoes sold. One week, she earned $47 in
earnstyle [38]
3s + h = $47
7s + 2h= $107


3s + h =$47
3s - 3s + h = $47 -3s
h = $47 - 3s

7s + 2($47 - 3s) = $107
7s + 94 -6s = 107
s + 94 = 107
s +94 -94 = 107- 94
s = 13

3(13) + h = $47
39 + h =$47
39 -39 + h= $47-39
h = 8

Check
7s + 2h= $107
7(13) + 2(8)= $107
91 + 16= 107
107 = 107

She earns $13 per suit sold and $8 per pair of shoes sold.



5 0
3 years ago
Write the ratios for sin A and cos A. Need help.
klio [65]

Answer:

Your answer would be C, Sin A= 3/5 cos A= 4/5

Step-by-step explanation:

Remember Soh-cah-toa

Soh stands for sin= opposite/hypotenuse

Cah stands for cos= adjacent/hypotenuse

Toa stands for tan= opposite/adjacent

8 0
2 years ago
Which example would be likely to give a valid conclusion?
m_a_m_a [10]
Thirty students are randomly sampled about their hair color. 

This is for two reasons,. Firstly, randomness is very important in drawing conclusions. Secondly, it is less of an opinion question and more fact based. 
7 0
3 years ago
Read 2 more answers
PLEASE HELP DUE TODAY PLPLZPLZ
Blizzard [7]

Answer:

60,140

Step-by-step explanation:

alternate interior angles are congruent. and then 1 and 4 are supplementary angles which create 180

5 0
2 years ago
Read 2 more answers
The area of a rectangular piece of cardboard is represented by
Liula [17]

This question is solved applying the formula of the area of the rectangle, and finding it's width. To do this, we solve a quadratic equation, and we get that the cardboard has a width of 1.5 feet.

Area of a rectangle:

The area of rectangle of length l and width w is given by:

A = wl

w(2w + 3) = 9

From this, we get that:

l = 2w + 3, A = 9

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

ax^{2} + bx + c, a\neq0.

This polynomial has roots x_{1}, x_{2} such that ax^{2} + bx + c = a(x - x_{1})*(x - x_{2}), given by the following formulas:

x_{1} = \frac{-b + \sqrt{\Delta}}{2*a}

x_{2} = \frac{-b - \sqrt{\Delta}}{2*a}

\Delta = b^{2} - 4ac

In this question:

w(2w+3) = 9

2w^2 + 3w - 9 = 0

Thus a quadratic equation with a = 2, b = 3, c = -9

Then

\Delta = 3^2 - 4(2)(-9) = 81

w_{1} = \frac{-3 + \sqrt{81}}{2*2} = 1.5

w_{2} = \frac{-3 - \sqrt{81}}{2*2} = -3

Width is a positive measure, thus, the width of the cardboard is of 1.5 feet.

Another similar problem can be found at brainly.com/question/16995958

5 0
2 years ago
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