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3 years ago

The dimensions of an iPhone are x – 2 and x + 3. If the area of an iPhone is 14 square inches, find the dimensions of the iPhone

Mathematics

1 answer:

QveST [7]3 years ago

3 0

Answer:

The dimensions of the iphone are 2 inches by 7 inches.

Step-by-step explanation:

Given that,

The dimensions of an iPhone are x – 2 and x + 3.

The area of an iphone is 14 sq inches

We need to find the dimensions of the iPhone. It is in the shape of a rectangle. Its area is given by :

$A=l\times b\\\\(x-2)(x+3)=14\\\\x^2-2x+3x-6=14\\\\x^2+x-6-14=0\\\\x^2+x-20=0\\\\x^2+5x-4x-20=0\\\\x(x+5)-4(x+5)=0\\\\(x-4)(x+5)=0\\\\x=4\ and\ x=-5$

Neglecting negative value

First dimension = (x-2) = (4-2) = 2 inches

Other dimension = (x+3) = (4+3) = 7 inches

Hence, the dimensions of the iphone are 2 inches by 7 inches.

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What is the probability that a respondent 18-29 years of age thinks that global warming will not pose a serious threat during hi

Stels [109]

Answer:

0.4906 or 49.06%

Missing Information: I have attached the missing table showing the data obtained from the poll taken from respondents

Step-by-step explanation:

Using the data,

the number of people who do not think there will be an impact of global warming during their lifetime = 131

Number of People who think there will be impact = 134

Number of People who are unsure = 2

Total no. of people = 131 +134 +2 = 267

Probability that respondent 18-29 years age thinks global warming won't pose a threat during his/her lifetime = P

Probability = P = $\frac{Number.of.people.who.said.No }{Total.number.of.people}$

Probability = P = $\frac{131}{267}$ = 0.4906 or 49.06 %

3 0

3 years ago

How do I solve this ?

Alja [10]

Answer:

g(-9) = 1

Step-by-step explanation:

g(-9) is the value of the function at x = -9

Go over the x = -9 and go up until you hit the blue line

Read the value of y

g(-9) = 1

5 0

4 years ago

Read 2 more answers

Which of the following is a composite number that is divisible by both 3 and 5?A.116B.135C.1025D.1546

BlackZzzverrR [31]

The answer is B. 135.

6 0

3 years ago

Factor –8x3 – 2x2 – 12x – 3 by grouping. What is the resulting expression? A. (2x2 – 3)(4x + 1) b. (–2x2 – 3)(–4x + 1) c. (2x2 –

svetlana [45]

It's D
(–2x2 – 3)(4x + 1)

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4 years ago

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Determine the center and radius of the following circle equation: x^2+y^2-8x+6y-75=0 x 2 +y 2 −8x+6y−75=0 Center: \big(( , \big)

Reptile [31]

Answer:

Compare x^2 +y^2-8x-6y=75 with the general circle equation x^2+y^2 -2ax-2by+c=0

-2a =-8 And -2b=-6

a=4 b=3

c=-75

To find the radius use the equation

r^2=a^2+b^2-c

r^2=4^2+ 3^2-(-75)

r^2=25+75=100

r=10(radius is always positive)

Hence the center is (4,3) and radius 10

Step-by-step explanation:

6 0

3 years ago