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3 years ago

What is the cude root of 2744?

Mathematics

1 answer:

lys-0071 [83]3 years ago

4 0

14

(this text is just to make the answer over 20 characters)

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chantel Mcdale earns $12 per hour Monday to Friday and$18 per hour on the weekends. one week, she worked 49 hours and earned $65

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Chantel Mcdale worked 1 hr one the weekend.

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3 years ago

A rectangle has width that is 6 meters less than the length. The area of the rectangle is 280 square meters. Find the dimensions

salantis [7]

Dimensions are length 20 meter and width 14 meter

Solution:

Let "a" be the length of rectangle

Let "b" be the width of rectangle

Given that,

A rectangle has width that is 6 meters less than the length

Width = length - 6

b = a - 6

The area of the rectangle is 280 square meters

The area of the rectangle is given by formula:

$Area = length \times width$

Substituting the values we get,

$Area = a \times (a-6)\\\\280 = a^2-6a\\\\a^2-6a -280=0$

Solve the above equation by quadratic formula

$\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}\\\\\quad x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

$\mathrm{For\:}\quad a=1,\:b=-6,\:c=-280:\quad a_{1,\:2}=\frac{-\left(-6\right)\pm \sqrt{\left(-6\right)^2-4\cdot \:1\left(-280\right)}}{2\cdot \:1}$

$a =\frac{6 \pm \sqrt{36+1120}}{2}\\\\a = \frac{6 \pm \sqrt{1156}}{2}\\\\a = \frac{6 \pm 34}{2}\\\\Thus\ we\ have\ two\ solutions\\\\a = \frac{6+34}{2} \text{ or } a = \frac{6-34}{2}\\\\a = 20 \text{ or } a = -14$

Since, length cannot be negative, ignore a = -14

Thus solution of length is a = 20

Therefore,

width = length - 6

width = 20 - 6 = 14

Thus dimensions are length 20 meter and width 14 meter

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3 years ago

What’s the total value of 20 quarters, 40 dimes, 30 nickels, and 15 pennies

Inessa [10]

Answer$10 65 cents

Step-by-step explanation:

20/4= $5 40/10= $4 .05 x 30= $1.50 and add those together to get $10.50 then add the 15 pennies which is $10.65

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3 years ago

Read 2 more answers

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steposvetlana [31]

Answer:

6u77vhy46yvt g vgj v6. hy

Step-by-step explanation:

guv yg

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3 years ago

Can someone help me. please! At the end, it says x less that 1, but greater than 0.

Afina-wow [57]

Then its 0. something. but not a whole number :) hope this helped

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3 years ago