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
Alexeev081 [22]
3 years ago
13

Evaluate.

Mathematics
1 answer:
mojhsa [17]3 years ago
6 0
1times 8 plus and then 3
You might be interested in
Solve three-fourths b minus one-sixth equals one-half for b
Snowcat [4.5K]
3/4b-1/6=1/2×b
1.75b=.3
b=0.2
I believe this is right. But not 100%
7 0
3 years ago
Find three consecutive positive integers such that the sum of their squares is 2354. What is the largest integer?
Ilya [14]

Answer:

The largest integer is 29.

Step-by-step explanation:

Let the consecutive positive integers are x, x+1 and x+2.

The square of sum of squares of three consecutive positive integers is 2354 such that,

x^2+(x+1)^2+(x+2)^2=2354\\\\x^2+x^2+2x+1+x^2+4+4x=2354\\\\3x^2+6x+5=2354\\\\3x^2+6x- 2349=0

It is a quadratic equation whose solution is given by :

x = 27 and x = -29

First positive integer = 27

Second positive integer = 27+1 = 28

Third positive integer = 27+2 = 29

Hence, the largest integer is 29.

4 0
3 years ago
Explain why it would not make sense to approximate 256 using the binomial theorem for the binomial (20 + 5)6.
Olenka [21]

The formula for the Binomial Theorem with a power 6 is as:

(x+y)^6=x^6+6x^5y+15x^4y^2+20x^3y^3+15x^2y^4+6xy^5+y^6

Thus, if we plug in 20 for x and 5 for y, our first term itself will be 20^6=64000000 which is much greater than 256 and thus it will not make any sense to use (20+5)^6 to approximate 256 using the binomial theorem.

Also, it will not make any sense to use (20+5)6 as that has no power and we know that Binomial Theorem makes use of Power. Anyway, (20+5)6=150\neq 256.

Our best bet here would be to use the equation with power 8:

(x+y)^8=x^8+8x^7y+28x^6y^2+56x^5y^3+70x^4y^4+56x^3y^8+28x^2y^6+7xy^7+y^8

and have x=1 and y=1 which will give us

(1+1)^8=1^8+8(1)^7(1)+28(1)^6(1)^2+56(1)^5(1)^3+70(1)^4(1)^4+56(1)^3(1)^8+28(1)^2(1)^6+7(1)(1)^7+(1)^8 =256

5 0
4 years ago
Read 2 more answers
The ages of students at a university are normally distributed with a mean of 21. What percentage of the student body is at least
stich3 [128]

Answer:

50%

Step-by-step explanation:

Recall : When given a normal or Symmetric distribution, the mean of the distribution is at the centre with 0.5 or 50% of the distribution to either side (right and left) of the distribution.

Hence, if the mean = 21 ; then the percentage of student body with atleast 21 years is the percentage to the left of the distribution, which is 50%.

Therefore, P(x ≤ 21) = 0.5 = 50%

8 0
3 years ago
8. The square of a number decreased by 3 times the number is 28. Find all
Llana [10]
The answer is 7 i think
3 0
3 years ago
Other questions:
  • Solve each equation with the quadratic formula
    5·1 answer
  • If 2 is added to three times a number, the result is equal to 7 more than two times the number.
    11·1 answer
  • A. Melanie completed a long distance run at an average speed of 6 km/he, if it takes her 3 hours, how far did she run. What form
    5·1 answer
  • Y = x + 3 8x - 7y = 12 solve using subsitutuion
    15·1 answer
  • How do i solve 9 - 2x = 15 *EXTRA POINTS
    13·2 answers
  • It took Azul 1.75 hours to bike The Blue Mountain Trail. Azul averaged 12.5 miles per hour. What is the best estimate for the le
    10·2 answers
  • Nico Joven presently earns $348.40 per week. He claims
    14·1 answer
  • What should the following equation be multiplied by in order to eliminate the fractions? {2y}{3} + {1}{3} = {y}{2} + {1}{6}
    13·1 answer
  • I need help please, I need to graph the solution wich is 5/12
    12·2 answers
  • Y=1x^(2)+10x+22 line of symmetry
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!