1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lina2011 [118]
2 years ago
8

A large rectangle is made by joining three identical small rectangles as shown.

Mathematics
1 answer:
vampirchik [111]2 years ago
3 0

Answer: 35 cm

Step-by-step explanation:

As shown in the image attached, the A large rectangle is made by joining three identical small rectangles,

The width of one small rectangle is x cm and the length of one small rectangle is 2x cm. Therefore the perimeter of the small rectangle is given as:

2(length + width) = Perimeter

2(2x + x) = 21

2(3x) = 21

6x = 21

x = 21/6 = 3.5 cm

x = 3.5 cm

From the image attached, the width of the large rectangle is 2x (x + x) and the length is 3x (2x + x). Therefore, the perimeter of the large rectangle is:

2(length + width) = Perimeter

2(3x + 2x) = Perimeter

Perimeter = 2(5x)

Perimeter = 10x

Perimeter = 10(3.5)

Perimeter = 35 cm

Step-by-step explanation:

You might be interested in
Draw 6 circles.<br> Make 3 groups.<br> Shade 1 group.
krek1111 [17]

Answer:

ummm I think this is obvious

Step-by-step explanation:

2 circles in each group, shade in one group of 2.

7 0
3 years ago
Read 2 more answers
The function f(x) =2(3)^x is to be multiplied by the function g(x) 3(3)^(2x) to create the function h(x). Which function is prod
maria [59]

Answer C is the right answer.

Step-by-step explanation:

h(x) = f(x) * g(x)

h(x) = (2*3^x ) * ( 3*3^2x )

2 * 3 is easy, that will be 6.

The ground number 3 remains 3 in h(x), so that is easy too...

But with multiplying exponents, you can add them.

Let's concentrate only on the exponents of f(x) and g(x)... and add them...

x + 2x =3x

So, now combine the easy part with this new exponent, and you get <u>h(x)</u><u> </u><u>=</u><u> </u><u>6</u><u>*</u><u>(3)^(3x)</u>

<u>So</u><u> </u><u>answer C is the right answer.</u>

7 0
3 years ago
A rectangular patio has a length of 12 yards and a width of 8.6 yards.
Savatey [412]

Area = Length x width

Area = 12 x 8.6

Area = 103.2 square yards.

5 0
3 years ago
Read 2 more answers
without looking not picking a red hat from a box that holds 20 red hats, 30 blue hats, 15 green hats, and 25 white hats
PolarNik [594]
There are 90 hats all together. from just red the fraction is 20/90. 20 divide by 90 = .22
there is a 22% chance.
5 0
3 years ago
Carbon-14 dating assumes that the carbon dioxide on Earth today has the same radioactive content as it did centuries ago. If thi
defon

7978 years

Step-by-step explanation:

A = A02^(-t/hl)

where hl = half-life.

Dividing both sides by A0 and taking the logarithm, we get

ln(A/A0) = -(t/hl)ln2

or solving for t,

t= -(hl)ln(A/A0)/ln2

note that A/A0 = 0.38

t = -(5715 yrs)[ln(0.38)/ln2]

= 7978 years

7 0
3 years ago
Other questions:
  • 4.1
    8·2 answers
  • 4/7 = x+3/21<br><br> A) x=9<br> B) x=15<br> C) x= 33 3/4<br> D) x=91<br><br> -<br> Would it be A??
    15·2 answers
  • Your car can drive 300 miles on a tank of 15 gallons. How far can it drive on 40<br> gallons?
    12·2 answers
  • On January 1t 2014, approximately 450 thousand buildings in the United Statcs (US) had sola panels. This number increased by a t
    11·1 answer
  • What is the denominator between 1/3 and 2/7
    8·1 answer
  • The equation y= 39 4x describes the number of miles y that an airplane travels in x minutes. What is the constant speed of the a
    5·1 answer
  • PLS HELP (algebra 1)<br><br><br> solve -6 + 8(16 - 19z)
    15·1 answer
  • How do you write 2x simplified?
    11·1 answer
  • What is the absolute value of Point C labeled on the number line?
    13·1 answer
  • A health coach spends $36 on elastic bands and meal kits for four clients. Each client receives an elastic band that costs $3 an
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!