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
dusya [7]
3 years ago
10

Pls pls pls pls pls help me pls

Mathematics
1 answer:
grandymaker [24]3 years ago
3 0

Coefficient of a² is -2

Coefficient of ab is 4

Coefficient of b is -2

You might be interested in
The even integers greater than or equal to 16
seraphim [82]
<span>Best you can do is describe a set: 


 


John
</span>
4 0
3 years ago
What is the value of x?
lorasvet [3.4K]

Answer:

x=9

Step-by-step explanation:

We can use similar triangles and ratios.  Put the small triangle side over the large triangle side.

9cm            3x -20

----------   = ----------------    We need to add the sides to get to the larger triangle

72+9 cm   3x-20 + 56


We can cross multiply to solve

9 * (3x-20+56) = (72+9) * (3x-20)

Simplify

9*(3x+36) = 81*(3x-20)

Distribute

27x +324 = 243x -1620

Subtract 27x from each side

27x-27x +324 = 243x-27x -1620

324 = 216x-1620

Add 1620 to each side

324+1620 = 216x

1944 = 216x

Divide each side by 216

1944/216 = 216x/216

9=x

6 0
3 years ago
Read 2 more answers
A student received an 82% on an exam. If there were 50 questions on the exam, which ratio would show the number of questions ans
cluponka [151]
Easy

82% correct
82 out of 100 correct
82/100 of ttoal correct
total=50
82/100 times 50=
41/50 times 50=41 correct

ratio is 41:50

B is answer

5 0
3 years ago
Read 2 more answers
What is the greatest common factor of<br> 10x2<br> + 25x?<br> 15x4
Tanya [424]

5

Step-by-step explanation:

your answer is 5 the greatest common factor is 5

10= 5

25=5

15= 5

5 0
2 years ago
Items produced by a manufacturing process are supposed to weigh 90 grams. The manufacturing procon
Annette [7]

Using the normal distribution, it is found that 0.26% of the items will either  weigh less than 87 grams or more than  93 grams.

In a <em>normal distribution</em> 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.

In this problem:

  • The mean is of 90 grams, hence \mu = 90.
  • The standard deviation is of 1 gram, hence \sigma = 1.

We want to find the probability of an item <u>differing more than 3 grams from the mean</u>, hence:

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

Z = \frac{3}{1}

Z = 3

The probability is P(|Z| > 3), which is 2 multiplied by the p-value of Z = -3.

  • Looking at the z-table, Z = -3 has a p-value of 0.0013.

2 x 0.0013 = 0.0026

0.0026 x 100% = 0.26%

0.26% of the items will either  weigh less than 87 grams or more than  93 grams.

For more on the normal distribution, you can check brainly.com/question/24663213

4 0
3 years ago
Other questions:
  • A(n) __________ is a number that the variable is multiplied by. It is usually found immediately before the variable. numerical e
    6·2 answers
  • Simplify by combining like terms 5x+3y+3x
    15·1 answer
  • PLEASE HELP ASAP 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER
    5·2 answers
  • 2. The sum of two numbers is 12. The difference of the same two numbers is 4.
    9·1 answer
  • Question number 1: 5/8 (16b+24) -1/2b<br><br> Question number 2: 3/4 (16/64 + 12a) -9a
    13·1 answer
  • Explain how you know that each pair of triangles are similar.
    12·1 answer
  • How many numbers are between 1 and 100 that are divisible by 2 and 5?
    11·1 answer
  • Find the area of the shaded figure of an arrow
    15·1 answer
  • Composite Figures Question 9.<br> A. 57 ft <br> B. 288 ft<br> C. 208 ft<br> D. 264 ft
    12·1 answer
  • 3. A new state law says that the penalty for
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!