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kirill [66]
3 years ago
13

Sophie is training for the triathlon. She swims 40 meters in 50 secs, moving at a constant speed. Sophie wants to know her rate

in meters per second
Mathematics
1 answer:
vodka [1.7K]3 years ago
8 0

Answer:

I think the answer should be .8 meters per seconds

Sorry if im incorrect. I hope this helps Stay SAFEEE!!!

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One number is 8 greater than another. The product of the numbers is 84. Find the numbers.
mario62 [17]

Let x,y be the two numbers.

Given that one number is 8 greater than another.

Let x be the smaller number ans y be the greater number.

That is y=x+8. Let this be the first equation.

And also given that product of the two numbers is 84.

That is x × y = 84, let us plugin y=x+8 here.

x × (x+8) = 84

x²+ 8x -84 = 0.

x²+12x-4x-84 = 0

x(x+12)-4(x+12) =0

(x-4)(x+12)=0

That is x= 4 or -12.

<h3>If x=4 , y= 4+ 8 = 12</h3>

<h3>If x= -12, y= -12+8 = -4 </h3>

Hence two positive numbers corresponding to given conditions are 4,12.

And two negative numbers corresponding to given conditions are -12,-4.

Step-by-step explanation:

hope it may help you!!

please mark as brainlist please (´;︵;`)

5 0
3 years ago
(9x-9)(9×+9), your finding the difference between two squares. im have some trouble in how to solve it.​
sergejj [24]

Answer: Your answer is 0 (F.O.I.L) first. outer. inner. last. Or you could use what my teacher calls the magic box

Step-by-step explanation:

So for the boxes you multiply for example the top left box you multiply the 9 above it and the 9 to the left or like the top right box you multiply the -9 above it and the 9 on the outside of the box to the left

8 0
3 years ago
How to find if a function is positive or negative?
stiks02 [169]
Positive because a function is beetween and past
6 0
3 years ago
Is 1/5 and 3/10 eqivallant
kirill [66]

Answer:

No

1/5 is equivalent to 2/10

4 0
3 years ago
Read 2 more answers
The radius of a circle is 7 m. Find its area to the nearest tenth
BaLLatris [955]

Answer:

153.9

Step-by-step explanation:

Area of a circle formula:

Pi*r*r of Pi*r^2

pi*7*7= Area of circle

pi*49

49* 3.14 is around 153.86 which is around 153.9

3 0
3 years ago
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