Can someone please help me with these equations? Thank you

Mathematics

1 answer:

e-lub [12.9K]2 years ago

8 0

H yes you have to do the c
N
Would be
Correct
Answer h

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Which expression is equivalent to (5m^)3

aleksklad [387]

Answer:

5m•5m•5m

Step-by-step explanation:

You are multiply the factor by itself as many times as the exponent says. so if the factor is 5m, you would multiply it by itself by the exponent, which in our case is 3.

8 0

3 years ago

Read 2 more answers

A rectangular playground is 10m longer than it is wide.The area of the playground is 1400m² Calculate the width and length of th

Bezzdna [24]

Answer:

$1400 = x(x+10)= x^2 +10x$

We can rewrite this expression like this:

$x^2 +10 x -1400 =0$

And we can use the quadratic formula given by:

$x = \frac{-b \pm \sqrt{b^2 -4ac}}{2a}$

Where $a =1 , b=10 , c= -1400$

And replacing we got:

$x = \frac{-10 \pm \sqrt{10^2 -4(10)(-1400)}}{2*1}$

And solving we got:

$x_1 =32.75 , x_2 = -42.75$

And since the value can't be negative the answer would be x = 32.75 and the value of y = 32.75+10 =42.75

Step-by-step explanation:

For this case we know that we have a rectangular playground and the area can be founded with this formula:

$A = xy$

Where x represent the width and y the length. From the problem we know that A =1400 m^2 and the heigth is 10m longer than the wide so we can write this condition as:

$y = 10 +x$