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
zloy xaker [14]
3 years ago
8

Explanation ASAP please.​

Mathematics
2 answers:
elena-14-01-66 [18.8K]3 years ago
7 0

Answer:

Estimate = 1/2(12)(7) = 42 cm²

actual area = 42.25 cm²

Step-by-step explanation:

area = 1/2bh = 1/2(11.9)(7.1) = 42.25 cm²

postnew [5]3 years ago
3 0
Triangle area is 1/2 bh
So 11.9 is about 12, 7.1 is about 7.
7x12 = about 84 sq, cm
You might be interested in
If f (x)=8-5x, find the value of f(2-k)
Helen [10]

Hello from MrBillDoesMath!

Answer:

f(2-k) = -2 + 5k

Discussion:

If f(x) = 8 - 5x , then

f(2-k) = 8 - 5(2-k) =>

f(2-k) = 8 - 10 + 5k =>

f(2-k) = -2 + 5k

Regards,  

MrB


6 0
3 years ago
What is 20 + 52????ANSWER IT QUICKLY PLEASE
Evgen [1.6K]
The answer to 20+50 is 72
8 0
2 years ago
Read 2 more answers
Solve for x 11^x/11^3=11^2 PPEASE I HAVE AN F
dimaraw [331]
Answer is x=5
It is right
4 0
2 years ago
The​ life, in​ years, of a certain type of electrical switch has an exponential distribution with an average life β=44. If 100 o
Bond [772]

Answer:

0.9999

Step-by-step explanation:

Let X be the random variable that measures the time that a switch will survive.

If X has an exponential distribution with an average life β=44, then the probability that a switch will survive less than n years is given by

\bf P(X

So, the probability that a switch fails in the first year is

\bf P(X

Now we have 100 of these switches installed in different systems, and let Y be the random variable that measures the the probability that exactly k switches will fail in the first year.

Y can be modeled with a binomial distribution where the probability of “success” (failure of a switch) equals 0.0225 and  

\bf P(Y=k)=\binom{100}{k}(0.02247)^k(1-0.02247)^{100-k}

where  

\bf \binom{100}{k} equals combinations of 100 taken k at a time.

The probability that at most 15 fail during the first year is

\bf \sum_{k=0}^{15}\binom{100}{k}(0.02247)^k(1-0.02247)^{100-k}=0.9999

3 0
3 years ago
If a = 3 units, b = 8 units, and c = 10 units, what is the volume of the figure?
erik [133]

Step-by-step explanation:

Volume = L \times W \times H.

L - Length

W- Width.

H- Height.

<u>Multiply each side:</u>

3 \times 8 \times 10 = 240

Answer: 240 units^{3}

6 0
2 years ago
Other questions:
  • Which of the following is a result of shifting a circle with equation (x + 3)2 + (y - 2)2 = 36 up 3 units? A. The x-coordinate o
    8·2 answers
  • Find the sum of 8/10 + 7/10 ?
    8·2 answers
  • Barkley has a box shaped like a cylinder that he will use to package a ball for a gift. He wants to fill the remainder of the bo
    7·1 answer
  • 3.868×10 9 =? <br> What is this answer?
    14·1 answer
  • Kinda blurry but help pls
    12·1 answer
  • Julisha poured 0.9 liter of water into an
    11·1 answer
  • Help plssss!!!!<br><br> ...................
    9·1 answer
  • PLEASE SOMEONE HELP NOWWWW.
    6·2 answers
  • 4a + (–6b) – 3a + 2b factor the expression
    10·1 answer
  • Rodney created a graph of each given linear equation below, but Rodney made mistakes on each of his graphs. Explain Rodney’s err
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!