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3 years ago

I’m broke with points

Mathematics

2 answers:

Kamila [148]3 years ago

8 0

Answer:

12.6

Step-by-step explanation:

jolli1 [7]3 years ago

4 0

It would 12.6 cause if you divid 12 and 20 together you get 0.6 and you don’t have to change the 12 so yay

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kaya does homework for 2 2/3 hours. she spends 1/4 of this time doing science homework. how much times does she spend doing her

attashe74 [19]

20 minutes long she does homework for

3 0

3 years ago

Graph the line for y+1=−3/5(x−4) on the coordinate plane

Andrej [43]

Solve for y:
y + 1 = -3/5x + 2.4 (multiply 4 by 3/5 no negatives because negative times a negative is a positive)
y = -3/5x + 1.4
Now graph the y-intercept of 1.4.
Then plot points using slope.
Hope this helps and let me know if you have more questions!

7 0

3 years ago

1/5y + 1/8 =3/20 solve for y

Eddi Din [679]

Answer:

y= $\frac{1}{8}$

Step-by-step explanation: $x_{3}$

$\frac{1}{5}y+\frac{1}{8}=\frac{3}{20}$

multiply both sides

8y+5=6

move the constant to the right

8y=6-5

calculate

8y=1

divide both sides

y= $\frac{1}{8}$ or y=0.125

4 0

3 years ago

Let Pk denote the vector space of all polynomials with degree less than or equal to k. Define a linear transformation T : P4 ! P

shusha [124]

Answer:

Step-by-step explanation:

T(1)=1=0*x^3 0*x^2 0*x 1*1 T(x)=x-1=0*x^3 0*x^2 1*x (-1)*1 T(x^2)=2x^2-6x 6=0*x^3 2*x^2 (-6)*x 6 T(x^3)=6x^3-48*x^2 141*x-141 T(x^4)=24*x^3-204*x^2 628*x-604*1 collect the coefficient matrix and take its transpose

0 0 0 6 24

0 0 2 -48 -204

0 1 -6 141 628

1 -1 6 -141 -604

6 0

4 years ago

What is the probability that the mean duration of the 24 rowers with idna exceeds 63 minutes?

statuscvo [17]

Answer:

Step-by-step explanation:

Given that: Training-session duration of female rowers with normal iron status is Normally distributed, with mean 69 minutes and standard deviation 18minutes.

Solution:

z score shows the relationship between sample means. The z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by the formula:

$z=\frac{x-\mu}{\sigma}\\\\for\ sample(n):\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} } \\\\where\ \mu=mean,\sigma=standard\ deviation,x=raw\ score$

Given that μ = 69 minutes, σ = 18 minutes, n = 24

For x > 63 minutes:

$z=\frac{x-\mu}{\sigma / \sqrt{n} } =\frac{63-69}{18/\sqrt{24} }=-1.63$

From the distribution table, P(x > 63) = P(z > -1.63) = 1 - P(z < 1.63) = 1 - 0.0516 = 0.9484

7 0

3 years ago