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
JulsSmile [24]
3 years ago
15

Can someone simplify 6t+10t–9t

Mathematics
2 answers:
masya89 [10]3 years ago
8 0

Answer:

6t + 10t - 9t

(6 + 10 - 9 ) t

7t

Step-by-step explanation:

Brut [27]3 years ago
6 0

Answer:

7t

Step-by-step explanation:

You might be interested in
Express 25 to the power of 4x as a power of 5 in terms of x
kirza4 [7]

Step-by-step explanation:

25^(4x) = (25^4)^x = (5^8)^x = 5^(8x).

4 0
3 years ago
Solve the equation by completing the square.<br><br> 3x^2-12x=96
olasank [31]

Answer:

x = 8

or

x = -4

Step-by-step explanation:

3x² - 12x = 96

Divide both sides by 3

x² - 4x = 32

Add 4 to both sides

x² - 4x + 4 = 32 + 4

(x - 2)² = 6²

Find the square root of both sides

√(x - 2)² = √6²

x - 2 = +/- 6

x - 2 = +6 or -6

x - 2=+6

x=6+2

x=8

x - 2=-6

x=-6+2

x=-4

x = 8

or

x = -4

8 0
3 years ago
Angle b is three times the measure of angle a. Angle c is two times the measure of angle a. What are the measures of all the ang
rewona [7]

Answer:

30 60 90

Step-by-step explanation:

4 0
2 years ago
Assume that SAT scores are normally distributed with mean 1518 and standard deviation 325. Round your answers to 4 decimal place
Katyanochek1 [597]

Answer:

a. 0.2898

b. 0.0218

c. 0.1210

d. 0.1515

e. This is because the population is normally distributed.

Step-by-step explanation:

Assume that SAT scores are normally distributed with mean 1518 and standard deviation 325. Round your answers to 4 decimal places

We are using the z score formula when random samples

This is given as:

z = (x-μ)/σ/√n

where x is the raw score

μ is the population mean

σ is the population standard deviation.

n is the random number of samples

a.If 100 SAT scores are randomly selected, find the probability that they have a mean less than 1500.

For x = 1500, n = 100

z = 1500 - 1518/325/√100

z = -18/325/10

z = -18/32.5

z = -0.55385

Probability value from Z-Table:

P(x<1500) = 0.28984

Approximately = 0.2898

b. If 64 SAT scores are randomly selected, find the probability that they have a mean greater than 1600

For x = 1600, n = 64

= z = 1600 - 1518/325/√64.

z= 1600 - 1518 /325/8

z = 2.01846

Probability value from Z-Table:

P(x<1600) = 0.97823

P(x>1600) = 1 - P(x<1600) = 0.021772

Approximately = 0.0218

c. If 25 SAT scores are randomly selected, find the probability that they have a mean between 1550 and 1575

For x = 1550, n = 25

z = 1550 - 1518/325/√25

z = 1550 - 1518/325/5

z = 1550 - 1518/65

= 0.49231

Probability value from Z-Table:

P(x = 1550) = 0.68875

For x = 1575 , n = 25

z = 1575 - 1518/325/√25

z = 1575 - 1518/325/5

z = 1575 - 1518/65

z = 0.87692

Probability value from Z-Table:

P(x=1575) = 0.80974

The probability that they have a mean between 1550 and 1575

P(x = 1575) - P(x = 1550)

= 0.80974 - 0.68875

= 0.12099

Approximately = 0.1210

d. If 16 SAT scores are randomly selected, find the probability that they have a mean between 1440 and 1480

For x = 1440, n = 16

z = 1440 - 1518/325/√16

= -0.96

Probability value from Z-Table:

P(x = 1440) = 0.16853

For x = 1480, n = 16

z = 1480 - 1518/325/√16

=-0.46769

Probability value from Z-Table:

P(x = 1480) = 0.32

The probability that they have a mean between 1440 and 1480

P(x = 1480) - P(x = 1440)

= 0.32 - 0.16853

= 0.15147

Approximately = 0.1515

e. In part c and part d, why can the central limit theorem be used even though the sample size does not exceed 30?

The central theorem can be used even though the sample size does not exceed 30 because the population is normally distributed.

6 0
3 years ago
Prism M and pyramid N have the same base area and the same height. Cylinder P and prism Q have the same height and the same base
serg [7]

Answer:

hi

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • All of the following MUST be the same for congruent circles EXCEPT A) center B) circumference C) diameter D) radius
    8·2 answers
  • Kaya had a string 6 1/8 in. long. She cut off a piece 2 ¾ in. long. How
    9·2 answers
  • Supposed two angles are supplementary and one of them measures 31 degree what is The measure of the other angle
    6·1 answer
  • You choose the king of hearts from a shuffled pack of 52 playing cards whats the probability
    6·2 answers
  • What is 2x+y=12 3x-18=y
    8·1 answer
  • I need help with 7-10 please!
    9·1 answer
  • What is 5.2¯ expressed as a fraction in simplest form? <br> 38/9<br> 47/9<br> 27/5<br> 26/5
    13·2 answers
  • 1. What are the solutions to the quadratic equation
    11·2 answers
  • Write each expression in scientific notation. Put your answer for EACH part in the text box. You should have 5 answers for this
    13·1 answer
  • Select the tape diagram that represents 10 + 5 = 15. *<br><br> A<br> or<br> B
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!