Please help worth 25 points

A rectangle has a base that is three feet longer than its height. The area of the rectangle is 54 square feet. What are the dimensions of the rectangle?

Answers

Answer 1

Answer:

h=6 feet

Step-by-step explanation:

Given: 1. The base of a rectangle is three feet longer than its height.

2.Are of the rectangle=54 square meters

Let us say the rectangle has height h and base(breadth) b.

Since, the base of the rectangle is three feet longer than the height, we have b=h+3.

Also, Area of the Rectangle= hb

therefore, 54=h(h+3)

54= h2+ 3h

h2+3h-54=0 (Subtract 54 from both the sides)

To find the value of h we have to solve the quadratic equation.

[We have the equation in the form ax2+bx+c=0, to factorise the equation-

Step1. Find two numbers such that their multiplication is equal to ac and their addition is equal to b.

Step2. Replace b with these numbers.

Step3. Simplify the equation]

So, h2+3h-54=0

h2+9h-6h-54=0

h(h+9)-6(h+9)=0

(h+9)(h-6)=0

Which gives-

h= -9 or h= 6

As h is the height of the rectangle, h can not be -9.

so h=6 feet

and b=h+3=9 feet

So the dimensions of the rectangle are 6 feet for the height and 9 feet for the base.


Related Questions

Mila buys a two liter soda bottle. She accidentally drops the soda bottle and spills 287 milliliters of soda. How much soda is left?

Answers

Answer:

1713 milliliters

Step-by-step explanation:

1 liter is 1000 milliliters, so 2 liters is equal to 2000 milliliters.

2000 mL - 287 mL = 1713 mL

So 1713 mL are left.

What is the area of the obtuse triangle?

Answers

Answer:

C

Step-by-step explanation:

The area (A) of a triangle is calculated as

A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the perpendicular height )

Here b = 14 and h = 8 , then

A = [tex]\frac{1}{2}[/tex] × 14 × 8 = 7 × 8 = 56 in² → C

Is there a linear relationship between the radius and the volume of these cylinders?

Cylinder one: 28in^3 with a radius of 1 and height of 9
Cylinder two: 113in^3 with a radius of 2 and height of 9
Cylinder three: 254in^3 with a radius of 3 and height of 9

Answers

yesStep-by-step explanation:

Write an equivalent expression for b + b + b + r

Answers

Answer:

b3+r

Step-by-step explanation:

Answer:

3b + r

Step-by-step explanation:

Combine like terms to simplify this expression.  Note that b + b + b = 3b.

Thus, the given b + b + b + r condenses to 3b + r.

Hailey solves the equation shown.
1/4(2 – x) = 5+ 3x
In which step does Hailey make her first error?
Step 1: 1/2 - x = 5+ 3x
Step 2: 1/2 = 5 + 4x
Step 3: – 9/2 = 4x
Step 4: -9/8=x


Answers

Step one, didn't apply the 1/4 to x.

hii please help i’ll give brainliest!!

Answers

Answer:

It is Acceleration have a good day!

Answer:

Resistance

Step-by-step explanation:

Its D Because all the other ones aren't as close and to D aka Resistance

What is an equation of the line that passes through the points (-8, 4) and (-8, 8)?​

Answers

Answer:

x = -8

Step-by-step explanation:

The line is a vertical line with x-intercept of -8

a rectangular prism with a volume of 3 cubic units is filled with cubes with side lengths of 1/4 unit. How many 1/4 unit cubes does it take to fill the prism? ANSWER ASAP

Answers

Answer:

192

Step-by-step explanation:

at 1/4 unit length, each side of one cubic unit would be 4.

so each cubic unit would consist of 4x4x4 = 64 of the 1/4 cubic units.

64 x 3 = 192

Answer:

your answer will be 192

Step-by-step explanation:

hope it helps

Before​ work, Penny spends 1/2 hour getting​ showered/dressed, 1/4 hour eating​ breakfast, and 1/12 hour making lunch. What fraction of an hour does she spend doing these​ activities?

Answers

Answer:

30 minutes getting showered/ dressed

15 minutes eating

5 minutes making lunch

Step-by-step explanation:

what is the gcf (greatest common factor) of 9/45​

Answers

Answer:

9: 1,3,9

45: 1, 3, 5, 9, 15, and 45

Step-by-step explanation:

So the gcf is 9

Answer:

9

GCF of 9 and 45 is 9

Step-by-step explanation:

The greatest common factor of two numbers x and y is the greatest number that divides x and y leaving the remainder as 0

We can find the GCF of 9 and 45 by the following methods.

GCF of 9 and 45 by Listing the Common Factors Method

GCF of 9 and 45 by Prime Factorization Method

Solve for x: 5x = 2/7

Answers

5x=5=2/7 divided by 5

X=2/7 x 1/5

X=2/35

X=0.0571428

Determine if the sequence below is arithmetic or geometric and determine the
common difference / ratio in simplest form.
1, 3, 5, ...

Answers

Answer:

it is an arithmetic sequence, common difference is 2

Arithmetic: uses properties of addition
Geometric: uses properties of multiplication

1 + 2 = 3 + 2 = 5
This sequence is Arithmetic

Arithmetic uses common different: how much the number goes up by each time; rate of change

The common difference is 2

What integer makes this equation true? -2 + X = 10

Answers

Answer:

12 I think

Step-by-step explanation:

hope this helps

Answer:

the answer is 12

Step-by-step explanation:

your welcome

if x= 0, 2,-2 find the value of x3-1 help plz ​

Answers

when x =0

[tex]0 {}^{3} - 1 = 0 - 1 = - 1[/tex]

When x =2

[tex]2 {}^{3} - 1 = 8 - 1 = 7[/tex]

when x =-2

[tex]( - 2) {}^{3} - 1 = - 8 - 1 = - 9[/tex]

I need hel asap. PLEASE I WILL GIVE BRANLIEST

Answers

Answer:

x=12

Step-by-step explanation:

30/25=x/10

x=30×10/25

x=12

URGENT:
M is the Centriod of DEF

Answers

Answer:

A

Step-by-step explanation:

2/3 the way so you would do 6 plus 3, because 3 is half of 6

Find the greatest common factor of 14 and 28​

Answers

The greatest common factor of 14 and 28 is 14

Help plz!!!!!!! Help plzzzz!!!!!!

Answers

-2 = 0.12
-1 = 0.6
0 = 3
1 = 15
2 = 75

Multiplying special cases of polynomials


1. (x + 5)(x − 5)

a) x2-2x−25
b) x2−25
c) x2+2x−25

2. (n − 1)(n + 1)

a) n2 − 2n -1
b) n2 − 1
c) n2 − 2n +1

3) (p − 1)2

a) p2 − 2p +1
b) p2 − 2p -1
c) p2 + 2p +1

4. (x − 4)2

a) x2 − 8x -16
b) x2 − 16
c) x2 − 8x +16

5. (n + 3)2

a) n2 + 6 n - 9
b) n2 - 6 n + 9
c) n2 + 6 n + 9

6.-(2 + v)2

a) 4 + 4v + v2
b) v2 + 4v +4
c) v2 + 4

Answers

Answer:

1) b) x2−25

2) b) n2 − 1

3) a) p2 − 2p +1

4) c) x2 − 8x +16

5) c) n2 + 6 n + 9

6) b) v2 + 4v +4

Step-by-step explanation:

1. (x + 5)(x − 5) = x^2 - 25

2. (n − 1)(n + 1) = n^2 - 1

3) (p − 1)^2 = p^2 - 2p + 1

4. (x − 4)^2 = x^2 -8x + 16

5. (n + 3)^2 = n^2 + 6n + 9

6. (2 + v)^2 = v^2 + 4v + 4

find 5 rational numbers between 3/5 and 2/3​

Answers

This is the required answer <3

A grocery store buys items and then applies a markup of 70%. What is the retail price of item that originally costs $10?

Answers

Answer:

$17.00

Step-by-step explanation:

10 x 1.70 = $17.00

Answer:

The retail price is $17.00

Step-by-step explanation:

Find the missing side lengths. All answers should be in fully simplified form.
a=?
b?

Answers

Answer:

a=8 b=6

Step-by-step explanation:

Using the Pythagorean theorem, a^2+b^2=c^2, and in this case, a^2+b^2=10^2 = 100

so a^2+b^2=100

8^2+6^2=100

64+36=100 ✔

and since A is longer than B, a=8, b=6

Answer: a= [tex]5\sqrt{3}[/tex] b= 5

Step-by-step explanation:

sin 60=a/10

[tex]\frac{\sqrt{3} }{2}[/tex]=a/10

[tex]10\frac{\sqrt{3} }{2} =a[/tex]

[tex]5\sqrt{3}=a[/tex]

cos 60=b/10

.5=b/10

5=b

The sculpture consists of four identical prisms. Jane says the surface area of the sculpture is 4 times the surface area of one prism. Which statement about jane's method is true?

Answers

Options:

A.) Jane should multiply volumes, not areas.

B.) Jane should also subtract the areas of six hidden surfaces.

C.) Jane should also add the areas of six hidden surfaces.

D.) Jane is correct.

Answer:

B.) Jane should also subtract the areas of six hidden surfaces.

Step-by-step explanation:

When three-dimensional solids are joined together to form a solid, some surfaces will be visible while others won't.

When calculating the surface areas of such shapes, we only consider the visible parts (i.e. the areas of the hidden parts will be subtracted from the total areas of the individual shapes).

Since the sculpture is not attached to this question, we can assume that there are 6 hidden surfaces (as suggested by the options). The areas of these 6 hidden surfaces must be subtracted to get the actual surface area.

Answer:

Jane should also subtract the areas of six hidden surfaces.

Step-by-step explanation:

I just did it on Imagine Math

round to nearest hundredth :3,353

Answers

Answer:

3,000

Step-by-step explanation:

Since the next number is less than 5 you round down

A ladder is 51 inches tall. How tall is it in feet and inches?

Answers

Answer:

4 feet and 3 inches

Step-by-step explanation:

The measure of ladder in feet is 4.15.

Given that, a ladder is 51 inches tall.

Metric Conversion refers to the conversion of the given units to desired units for any quantity to be measured.

We know that, 1 feet = 12 inches

So, in inches = 51/12

= 4.25 feet

Therefore, the measure of ladder in feet is 4.15.

To learn more about the metric conversion visit:

brainly.com/question/21244256.

#SPJ6

Does anyone know? Thank you!

Answers

4/3 and 6/5 set me as brainlyest plz

Answer:

4/3

if you put all of the fractions in decimal form 4/3 is the most because it equals 1.25

Pls I need help ASAP

What is 2.5 - 1.4

Answers

Answer:

1.1

Step-by-step explanation:

PLS HURRY AND HELP
Darren had 3 apples represented by the variable (a) . He went to the store and bought 6 more apples to make a pie . Then his little brother Keith came into the kitchen and ate 2 of the apples. Write an expression to show how many Derran is left with.

Answers

Answer:

a + (6 -2)

I'm not completely sure, but I hope this helps.

Toby had a package of markers.

​After he used 4 of the markers, there ​were 10 markers left in the package.

​Which equation can be used to ​find the number of markers that were in the package before Toby used ​the markers?

Answers

10x+4x=14. .............

each set of points are connected to form a line segment. What is the length of each?

A = (3, 5 ) and B = ( 3, 6 )

ty to anyone who helps!! :)

Answers

DONT PRESS THE LINK PLS ITS A VIRUS
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