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seropon [69]
3 years ago
7

2/5 x 4/7 as a fraction

Mathematics
2 answers:
svp [43]3 years ago
8 0
8/35 is the answer. L.C.M is needed..Hope this helps
GalinKa [24]3 years ago
7 0
2/5 * 4/7 = 8/35

All you do is 2*4=8
And 5*7=35

So your answer is 8/35 


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Abigail tosses a coin off a bridge into the stream below. The distance, in feet, the coin above the water is modeled by the equa
melomori [17]

Answer:

7 seconds

Step-by-step explanation:

Distance of the coin above the water is modeled by the equation

y=-16x^2+96x+112

where x is time taken to cover the distance

Now equating with zero.

0=-16x^2+96x+112\\\Rightarrow 16x^2-96x-112=0\\\Rightarrow x=\dfrac{-\left(-96\right)\pm \sqrt{\left(-96\right)^2-4\times \:16\left(-112\right)}}{2\times \:16}\\\Rightarrow x=7, -1

So, time taken by the coin to hit the water is 7 seconds.

6 0
3 years ago
There are 2.54 centimeters in 1 inch. There are 100 centimeters in 1 meter.
Alika [10]

Answer:

5 meters

Step-by-step explanation:

If in 1 inch have 2.54 centimeters, in 197 inches will have:

197×2.54 = 500.38 centimeters

If 100 centimeters are 1 meter, 500 centimeters will have 5 meters, so 197 inches have 5 meters

3 0
3 years ago
3 3/15 write the fraction as a decimal
daser333 [38]
3.2 . I don't really know how to explain this, but I need to write at least 20 characters to give you my answer.
4 0
3 years ago
Read 2 more answers
Rotate the point (7,8) around the origin 90 degrees counterclockwise.
Juliette [100K]
The answer is (-8,7)

8 0
3 years ago
The product of three and a squared number is twice the sum of the number and four
Mamont248 [21]
From the text of the task we can write the equation:


3 x^{2} =2(x+4)\\
\\
3x^2=2x+8\\
\\
3x^2-2x-8=0\\
\\
\Delta=(-2)^2-4.3.(-8)=4+96=100\\
\\
x=\frac{2 \pm\sqrt{100}}{2.3}=\frac{2 \pm10}{6}\\
\\
x_1=\frac{2-10}{6}=-\frac{8}{6}=-\frac{4}{3}\\
\\
x_2=\frac{2+10}{2.3}=\frac{12}{6}=2
7 0
3 years ago
Read 2 more answers
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