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3 years ago

(graph above)

Mathematics

1 answer:

Masteriza [31]3 years ago

7 0

Answer:

the slope of AN and XY is -2/3.

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Which length measurement is the most precise.

vampirchik [111]

B: 6.03 The more numbers to the right of the decimal the more precise and accurate the number will be

5 0

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

6 0

4 years ago

Renting a canoe costs $5.00 per hour for each adult and $2.50 per hour for each child. One adult and two children decide to rent

s344n2d4d5 [400]

Answer:

The equation is equal to $c=10t$

Step-by-step explanation:

Let

c-----> the cost in dollars

t----> the time in hours

we know that

One adult and two children

$c=(1)5t+(2)2.5t\\ \\c=5t+5t\\ \\c=10t$

3 0

3 years ago

What is the 22nd term of the sequence below? -9, -3,3,9, ...

Fiesta28 [93]

-9,-3,3,9,-9,-3,3,9 so forth until -3

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3 years ago

Alison has $1.60 worth of nickels and dimes in her coin purse. She has 11 more nickels than dimes.

vovikov84 [41]

Alison has 18 dimes and 7 nickels

7 0

3 years ago