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
Lostsunrise [7]
2 years ago
12

Help me do this question i need help

Mathematics
1 answer:
poizon [28]2 years ago
6 0

Answer:

<em>P = 35 cm</em>

Step-by-step explanation:

<u>Rectangles</u>

Being x and y the dimensions of a rectangle, the perimeter can be calculated as:

P = 2x + 2y

The smaller rectangles of the figure have a width of x cm. We don't know the value of the length, but we can see how the two smaller horizontal rectangles' widths complete the height of the vertical rectangle. Since all the rectangles are identical, then the height of each rectangle is

y = 2x

Substituting in the formula and knowing the perimeter is 21:

2x + 2(2x) = 21

6x = 21

x = 21/6 = 7/2 = 3.5

The large rectangle has a width of 2x and a length of y+x = 3x, thus the perimeter is:

P = 2(2x) + 2(3x) = 4x + 6x = 10x

Since x=3.5 cm:

P = 35 cm

You might be interested in
Angle DEF and angle FEG are supplementary. The measure of angle DEF = (9x +1) and the measure of angle FEG = (8x + 9). What is t
RUDIKE [14]
Supplementary angles are angles that are adjacent to each other and when summed to get a total of 180 degrees. In this case, DEF and FEG are supplementary. Thus the equation is <span>9x +1 + 8x + 9 = 180 = 17 x + 10; x then is equal to 10 so 
<</span>DEF = <span>9*10 +1 =91 degrees
</span><FEG = <span>8*10 + 9 = 89 degrees</span>
3 0
3 years ago
Who had a higher ratio of time spent watching TV to time spent reading?
BigorU [14]
Stacy had a higher ratio, because when you divide the time they spent watching t.v over the time they spent reading Carey had 0.75 and Stacy at 0.80 which leaves stacy with the higher ratio.
6 0
3 years ago
explain the transformation needed to convert the following data to a linear data set {(1, 0.98), (2, 1.39), (3, 1.71), (4, 1.98)
xz_007 [3.2K]
The given numbers are a set of points. To convert this into a linear data set, you can do data fitting. The easiest way to do this is using a software. In this case, I used MS Excel. You plot the points and set a linear trendline. The linear equation for this set of data is: y = 0.286x + 0.784

You can refer to the image to further understand the procedure.

6 0
3 years ago
Please answer this correctly
marusya05 [52]

Answer:

662

Step-by-step explanation:

l x w

10x41

6x22

8x15

662

4 0
3 years ago
The end of a hose was resting on the ground, pointing up an angle. Sal measured the path of the water coming out of the hose and
Kazeer [188]
The problem above can be modelled as shown in the graph below

At x=4, the height of the water from the ground is
f(4)=-0.3 (4)^{2} +2(4)
f(4)=3.2 ft

6 0
3 years ago
Read 2 more answers
Other questions:
  • Your science teacher recently gave a quiz to 28 students present in class. The class average was an 82.5. Five students that wer
    11·1 answer
  • Can anyone answer this last question please ?
    12·2 answers
  • At a Zoo, 3 pandas eat a total of 181 1/2 pounds of bamboo shoots each day.The male panda eats 3 times as much the baby. How man
    5·1 answer
  • How is the product of 2 and –5 shown on a number line? A number line going from negative 10 to positive 10. An arrow goes from 0
    8·2 answers
  • Solve the equation 6(y+1.5)= -18. what is the value of y? y=
    7·1 answer
  • IQ scores have a mean of 100 and a standard deviation of 16. Nora scored a 122 on the IQ test. What is Nora's z-score? Round to
    13·1 answer
  • A group of 31 friends gets together to play a sport. First, people must be divided into teams. Each team has to have exactly 3 p
    6·2 answers
  • You made Marcellus 3 times as tall as Dan but you dragged Marcellus’s mouth to be 5.46 times as wide as Dan’s mouth. A proportio
    13·1 answer
  • Can someone pl help me
    6·1 answer
  • Question 10 of 25
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!