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sergiy2304 [10]
2 years ago
7

True or False: You can tell if two ratios form a proportion if their cross products are equal. True O False​

Mathematics
1 answer:
daser333 [38]2 years ago
7 0

Answer:

Step-by-step explanation:

False

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Of 30 students, į play sports. Of those who play sports, į play soccer.
stellarik [79]

Answer:

what are the equations to the math on this?

8 0
3 years ago
A rectangle initially has width 7 meters and length 10 meters and is expanding so that the area increases at a rate of 8 square
Tems11 [23]

Answer:

The length of rectangular is increasing at a rate 0.5714 meters per hour.

Step-by-step explanation:

We are given the following in the question:

Initial dimensions of rectangular box:

Length,l = 10 m

Width,w = 7 m

\dfrac{dA}{dt} = 8\text{ square meters per hour}\\\\\dfrac{dw}{dt} = 40\text{ centimeters per hour} =0.4\text{ meters per hour}

We have to find the rate of increase of length.

Area of rectangle =

A = l\times w

Differentiating we get,

\displaystyle\frac{dA}{dt} = \frac{dl}{dt}w + \frac{dw}{dt}l

Putting values, we get,

8 = \dfrac{dl}{dt}(7) + (0.4)(10)\\\\\dfrac{dl}{dt}(7) = 8 -4\\\\\dfrac{dl}{dt} \approx 0.5714

Thus, the length of rectangular is increasing at a rate 0.5714 meters per hour.

5 0
3 years ago
Based on the diagram select all that apply.
Sveta_85 [38]

Answer:

E

Step-by-step explanation:

I just think so. Maybe it's right

4 0
3 years ago
Help pls! Brainliest!
blagie [28]

Answer:

y =-3000x +12000

Step-by-step explanation:

answer is

1)   12000 is the constant therefore when the number of hours is 0 the tickets are 12000

2)  the number of tickets (y) are reducing by 3000 for each hour(x). thus the coefficient of variable x should be -3000  (negative because it is reducing)

8 0
3 years ago
The table shows the relationship between a, the area of a rectangle, and h, its height, when the base remains constant.
nadezda [96]
A=4h BECAUSEE 2 times 4 is 8 and 5 times 4 is 20 caught the pattern yet? it's multiplying
3 0
3 years ago
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