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geniusboy [140]
2 years ago
12

Please help me solve this question im having trouble!!!!!

Mathematics
3 answers:
Marizza181 [45]2 years ago
8 0

Answer:

To  \: express \:  this \:  as \:  an \:  equation, \:   \\ let \:  L \:  represents \:  \: length \: and \: w \:  = \: width\:   \\ The \: width \: of  rectangle \:  is \:  3 \: feet \:  less  \: than \: \\   5  \: times \:  its \:  length.  \: This  \: tells  \: us \:  that  \: 3  \: \\ will  \: be  \: subtracted  \: from  \: 5l.  \: So,\\ w \: = 5L \: - \: 3. \: \\ \\ Next  \: the \:  area   \:  is \:  14 \:  and \:  since  \: the  \: area  \: of  \: a  \: rectangle \:  is   \\ \: length \times  \: width,  \: it will  \: be  \: expressed  \: as \: \\ 14 \: = L \times w \: since \: w \:  = (5L - 3) \\ 14 = L \times (5L - 3) \\ 14 = 5L {}^{2}  - 3L \\ 5L {}^{2}  - 3L - 14 = 0 \\ factor \: the \: polynomial \\ (5L + 7)(L - 2) = 0 \\ L =  \frac{ - 7}{5}  \: or \: 2 \: but \:  the  \: measurement  \: cannot be  \:  \\ negative  \: so \:  we \:  will \:  consider \:  2  \: instead \:  \\ \\ L = 2 ft \ \\\\ to \: find \: width \:  \\  w \:  =  \: 5L - 3 \\ w \:  =  \: 5(2) - 3 \\ w \:  =  \: 10 - 3 \\ w =  > 7 \: feet

arsen [322]2 years ago
7 0

Answer:

7 feet

Step-by-step explanation:

Yuki888 [10]2 years ago
5 0

Answer:

7 feet

Step-by-step explanation:

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Ratling [72]

Step-by-step explanation:

x^2+x-6006=0

x^2+78x-77x-6006=0

x(x+78)-77(x+78)=0

(x-77)(x+78)=0

=>x=77 or x=78

7 0
3 years ago
The coordinates of the vertices if JKL are J(0,2),K(3,1),And K(1,-5)
Anika [276]

Answer:

K(3,1),And K(1,-5),j(0,2) t

Step-by-step explanation:


7 0
3 years ago
A researcher collects data on the relationship between the amount of daily exercise an individual gets and the percent body fat
fredd [130]

Answer: approximately 24

Step-by-step explanation:

We need to plot a regression line.

So we fit a model using the regression of Y on X, that an equation that predict Y for a given X using:

(Y -mean(Y ))= a(X-meanX)...........1

Where the formular of a is given the attachment.

N= the of individuals = 5

Y = amount of fat

X = time of exercise

mean(X )= sum of all X /N

= 131/5 = 26.2

mean(Y) = sum of all Y/N

= 104/5 = 20.8

a = N(SXY) - (SX)(SY)/ NS(X²) -(SX)²......2

SXY = Sum of Product X and Y

SX= sum of all X

SY = Sum of all Y

S(X²)= sum of all X²

(SX) = square of sum of X

a = -0.478

Hence we substitute into 1

Y-20.8 = -0.478 (X-26.2)

Y -20.8 = -0.478X - 12.524

Y = -0.478X + 33.324 or

Y = 33.324 - 0.478X (model)

When X = 20

Y = 33.324 - 0.478 × 20

Y = 33.324 - 9.56

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Carefully meaning of formula used in attachment to the solution they are the same.

4 0
3 years ago
If the AREA of the rectangle at the right is 22 3/4 square inches, what is the width of the rectangle?
sergejj [24]

Answer:

3.25 or 3 1/4 inches

Step-by-step explanation:

A = lw

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6 0
3 years ago
An apple farmer is deciding how to use each day's harvest. She can use the harvest to produce apple cider or apple juice for the
Andreas93 [3]

Answer:For this item, we let x and y be the number of bushels of apple that will be used to produce apple cider and apple juice, respectively. The situation above is best represented by the following equations,

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Step-by-step explanation:

3 0
3 years ago
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