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
Aleks04 [339]
3 years ago
12

Please can anyone Help ASAP

Mathematics
2 answers:
Helen [10]3 years ago
8 0

Answer:

See below.

Step-by-step explanation:

She is wrong because  3 times the perimeter  of one triangle is the sum of 9 sides of the triangles.

In the shape  we see that some of the sides of the triangles are 'shared' and dare not part of the perimeter of the shape,  - the perimeter is only the length of 5 sides of a triangle.

So the perimeter is less than the sum of the sides of the 3  triangles.

leva [86]3 years ago
3 0

Answer:

Jemima is wrong because perimeter is sum of all sides and the perimeter of this figure would be the outer sides of it and not the inner sides.

You might be interested in
Enter "1" into cell A1. What do you get for the mean and the MAD of the data set
igor_vitrenko [27]
Ya totally your cool bro
7 0
3 years ago
Find the mirror image of the point (1,4) reflected on the line x=3
fiasKO [112]

hope it helps

plz.mark as brainliest

4 0
3 years ago
A tortoise and a hare are competing in a race around a 1600-meter track. The arrogant hare decides to let the tortoise have a 78
Sindrei [870]
I am presuming that the question is who won or by how much did the winner win. 

distance equals rate times time, or d = r*t
For the Hare d = 1600 and r = 10
   1600 = 10 t 
Divide both sides by 10 
t = 160
The hare finished in 160 seconds

For the tortoise d = 1600 - 780 = 820 (due to the head start) and r = 5.3
820= 5.3 t
Divide both sides by 5.3
t = 154.72 (rounded to the hundredths place)

The tortoise won by 5. 28 seconds (160-154.72)
 
6 0
3 years ago
Read 2 more answers
Use the exponential decay​ model, Upper A equals Upper A 0 e Superscript kt​, to solve the following. The​ half-life of a certai
Akimi4 [234]

Answer:

It will take 7 years ( approx )

Step-by-step explanation:

Given equation that shows the amount of the substance after t years,

A=A_0 e^{kt}

Where,

A_0 = Initial amount of the substance,

If the half life of the substance is 19 years,

Then if t = 19, amount of the substance = \frac{A_0}{2},

i.e.

\frac{A_0}{2}=A_0 e^{19k}

\frac{1}{2} = e^{19k}

0.5 = e^{19k}

Taking ln both sides,

\ln(0.5) = \ln(e^{19k})

\ln(0.5) = 19k

\implies k = \frac{\ln(0.5)}{19}\approx -0.03648

Now, if the substance to decay to 78​% of its original​ amount,

Then A=78\% \text{ of }A_0 =\frac{78A_0}{100}=0.78 A_0

0.78 A_0=A_0 e^{-0.03648t}

0.78 = e^{-0.03648t}

Again taking ln both sides,

\ln(0.78) = -0.03648t

-0.24846=-0.03648t

\implies t = \frac{0.24846}{0.03648}=6.81085\approx 7

Hence, approximately the substance would be 78% of its initial value after 7 years.

5 0
2 years ago
Write 12345678 times 10^-9 as a decimal.
labwork [276]
You answer would be 0.012345678.
 Calculate it 
5 0
3 years ago
Read 2 more answers
Other questions:
  • Kathy distributes jelly beans among her friends. Alia gets 4^2 fewer jelly beans than Kelly, who gets 3^3 jelly beans. How many
    15·2 answers
  • La tabla muestra la cuenta en el nuevo kit de cuentas de Jenny los seis amigos de Jenny tienten el mismo kit de cuentas cuántas
    14·1 answer
  • WILL GIVE BRAINLIEST<br>What is the value of a in the problem 4a-3=D<br>explain answer
    9·1 answer
  • I just need the answers on this and a couple other worksheets please.
    11·1 answer
  • What would the answer be to 1/2+1/8-1/4
    8·2 answers
  • Factor the expression completely.<br><br> 25c-5
    13·1 answer
  • What is the range of the function y=4e^x?
    15·2 answers
  • Mr. Smith wants to order some pizza and cheese pizza cost $11 and pepperoni pizza cost $12.50 if you bought 13 pieces total and
    5·1 answer
  • What is the percent of increase from 6 to 9? Write your answer using a percent sign (%)
    6·2 answers
  • Evaluate 5c-3d + 11 when c= 7 and d = 8.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!