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3 years ago

Plz help right answer gets brainly

Mathematics

2 answers:

Anna [14]3 years ago

5 0

Answer:

36..............!!!!

Rashid [163]3 years ago

4 0

The answer is 36!!!!!

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Hailey bought a 9 ft piece of ribbon that she will cut into 2/3 ft long pieces. How many 2/3 ft pieces can Hailey cut?

Volgvan

Answer:

13.5

Step-by-step explanation:

9Ft / (2/3) ft = 13.5

8 0

3 years ago

Simplify the function f (x) = f(x)= 1/2 (27)^ 2x/3. Then determine the key aspects of the function.

lora16 [44]

Answer:

f= (not applicable)

x= f(x)=1/2*((27) squared (x/3))

Step-by-step explanation:

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3 years ago

I HAVE ANOTHER CLASS TOMORROW AND NEED TO FINISH IT RIGHT NOW (MAYBE 20 MIN MAX) SOMEBODY PLEASE HELP, ME! ANY ANNOYING OR FAKE

neonofarm [45]

Answer:

69420

Step-by-step explanation:

3 x 7+x is 69420 so thats the answer ez

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3 years ago

A cable car can safely carry n people thete are alreafy 3/4n people on the cable car only 12 more people can board the cable car

ipn [44]

Answer: 48 people.

Step-by-step explanation:

1. You know that $n$ represents tha number of people that the cable car can safely carry.

2. If you know that there are $\frac{3}{4}n$ and only 12 more people can board it before it becomes unsafe, you can write the following expression:

$n=\frac{3}{4}n+12$

3. Now, you must solve for $n$ .

4. Then, the number of people that the cable car safely carry is:

$n-\frac{3}{4}n=12\\\frac{1}{4}n=12\\n=12*4\\n=48$

4 0

3 years ago

The national average for the math portion of the College Board’s Scholastic Aptitude Test

Alex73 [517]

Answer:

a) 0.1587

b) 0.023

c) 0.341

d) 0.818

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 515

Standard Deviation, σ = 100

We are given that the distribution of SAT score is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(score greater than 615)

P(x > 615)

$P( x > 615) = P( z > \displaystyle\frac{615 - 515}{100}) = P(z > 1)$

$= 1 - P(z \leq 1)$

Calculation the value from standard normal z table, we have,

$P(x > 615) = 1 - 0.8413 = 0.1587 = 15.87\%$

b) b) P(score greater than 715)

$P(x > 715) = P(z > \displaystyle\frac{715-515}{100}) = P(z > 2)\\\\P( z > 2) = 1 - P(z \leq 2)$

Calculating the value from the standard normal table we have,

$1 - 0.977 = 0.023 = 2.3\%\\P( x > 715) = 2.3\%$

c) P(score between 415 and 515)

$P(415 \leq x \leq 515) = P(\displaystyle\frac{415 - 515}{100} \leq z \leq \displaystyle\frac{515-515}{100}) = P(-1 \leq z \leq 0)\\\\= P(z \leq 0) - P(z < -1)\\= 0.500 - 0.159 = 0.341 = 34.1\%$

$P(415 \leq x \leq 515) = 34.1\%$

d) P(score between 315 and 615)

$P(315 \leq x \leq 615) = P(\displaystyle\frac{315 - 515}{100} \leq z \leq \displaystyle\frac{615-515}{100}) = P(-2 \leq z \leq 1)\\\\= P(z \leq 1) - P(z < -2)\\= 0.841 - 0.023 = 0.818 = 81.8\%$

$P(315 \leq x \leq 615) = 81.8\%$

4 0

4 years ago