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
mezya [45]
3 years ago
6

What is 4/5+(−7/5)? (it's in fraction form)

Mathematics
2 answers:
Bas_tet [7]3 years ago
8 0

Answer:

-3/5

Step-by-step explanation:

The answer is -3/5 because you are adding 4/5 and -7/5, and the sum will be -3/5, so there's your answer.

<em>Hopefully the explanation and answer helps!</em>

Bingel [31]3 years ago
4 0

Answer:

-3/5

Step-by-step explanation:

Hope this helps, the answer is actually -0.6, but in fraction form its -3/5 :)

You might be interested in
Simplify the following expression<br>6a^4c+8ac^2-4a^4c-15-10ac^2
aleksandr82 [10.1K]

Answer:

2a^4c-2ac^2-15

Step-by-step explanation:

Sorry, I not sure if this is right or not cause I don't know if the exponent for -4a^4c is that or -4a^4c-15, but I'm just going to go with -4a^4c. However aside from that you just combine like terms.

7 0
3 years ago
Read 2 more answers
The nearest star to the earth is<br><img src="https://tex.z-dn.net/?f=%20%7B2%20%5Ctimes%20%20%2B%204%7D%5E%7B2%7D%20%20%3D%20%2
dalvyx [7]
The nearest start of the earth is Alpha Centauri and the answers to the math question is X= 4 Square root 2
7 0
2 years ago
HELP ME WITH THIS PLEASE!!! COORDINATES!
likoan [24]
(0, 4)
(-1, -3)
(2, -3)

For a 90 degrees clockwise rotation, the rule is (y, -x)
7 0
3 years ago
HELP ME PLEASE !!!!!!!!
german

Answer:

the answer is the top one and the last one. Hope it helped :)

4 0
2 years ago
When a scientist conducted a genetics experiments with peas, one sample of offspring consisted of 943 peas, with 717 of them hav
pshichka [43]

Using the normal approximation to the binomial distribution, it is found that:

a) 0.242 = 24.2% probability of getting 717 or more peas with red flowers.

b) Since Z < 2, 717 peas with red flowers is not significantly high.

c) Since 717 peas with red flowers is not a significantly high result, we cannot conclude that the scientist's assumption is wrong.

For each pea, there are only two possible outcomes. Either they have a red flower, or they do not. The probability of a pea having a red flower is independent of any other pea, which means that the binomial distribution is used to solve this question.

Binomial distribution:

Probability of x successes on n trials, with p probability.

Normal distribution:

In a normal distribution with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

  • It measures how many standard deviations the measure is from the mean.  
  • After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.
  • If Z > 2, the result is considered <u>significantly high</u>.

If np \geq 10 and n(1-p) \geq 10, the binomial distribution can be approximated to the normal with:

\mu = np

\sigma = \sqrt{np(1-p)}

In this problem:

  • 943 peas, thus, n = 943
  • 3/4 probability of being red, thus p = \frac{3}{4} = 0.75.

Applying the approximation:

\mu = np = 943(0.75) = 707.25

\sigma = \sqrt{np(1-p)} = \sqrt{943(0.75)(0.25)} = 13.297

Item a:

Using continuity correction, this probability is P(X \geq 717 - 0.5) = P(X \geq 716.5), which is <u>1 subtracted by the p-value of Z when X = 716.5</u>.

Then:

Z = \frac{X - \mu}{\sigma}

Z = \frac{716.5 - 707.25}{13.297}

Z = 0.7

Z = 0.7 has a p-value of 0.758.

1 - 0.758 = 0.242

0.242 = 24.2% probability of getting 717 or more peas with red flowers.

Item b:

Since Z < 2, 717 peas with red flowers is not significantly high.

Item c:

Since 717 peas with red flowers is not a significantly high result, we cannot conclude that the scientist's assumption is wrong.

A similar problem is given at brainly.com/question/25212369

6 0
2 years ago
Other questions:
  • If angle 1 = 60o and angle 2 = 90o, what is the sum of angles 1 and 2?
    10·2 answers
  • A rectangle has a width w that is 5 units longer than its length l. Which equation expresses the rectangle's area, A?
    14·2 answers
  • If the nth term of a number sequence is n² – 3, find the first 3 terms and the 10th term​
    9·1 answer
  • Simplify the expression.<br><br>4 + (11 - 3)2<br><br>A.) 68<br>B.)6<br>C.)20<br>D.)144​
    12·2 answers
  • 1) A school has 1600 students and they are going to vote as to whether they will completely convert the school completely off fo
    8·1 answer
  • Who could help me please and thank you
    10·1 answer
  • Plssssss helpppp meeeeee
    14·2 answers
  • Someone help me please.
    11·2 answers
  • I don’t understand linear equations
    9·2 answers
  • Pa sagot nmnpo ng maayos ubos na po pts ko =&lt; need ko na po kac ng sagot in this time Sana ayos in ng sagot kac papagalitan n
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!