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3 years ago

Help me out and explain in how to do it I'll mark brainlist if you explain how do you solve this problem.

Mathematics

1 answer:

Klio2033 [76]3 years ago

8 0

Is a y = Mx + b equations it’s B because c is our y and it look like it going up by 12 so every 1 Cube is 12 towers

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i have 100% in the class, but the cumulative final is next week. what if i fall on the final, how many percent will i have after

Alex

Answer:

How much will a 60 affect my grade?

If it is a test grade, which in my school they are worth 60%, then it will bring you down by pretty much a whole lot, probably about 7–10 points. If it is a 20% weight it will only bring it down by about 2–3 points.

Step-by-step explanation:

8 0

2 years ago

Jace is a songwriter who collects royalties on his songs whenever they are played in a commercial or a movie. Jace will earn $50

riadik2000 [5.3K]

Answer:

The number of commercials is 340 and the number of movies are 334.

Step-by-step explanation:

Let the number of commercials be = C

number of movies be = M

According to given conditions:

C = 6 + M --------- eq1

C + M + 6 = $680 ------ eq2

Putting eq1 in eq2:

6 + M + 6 + M = $680

12 + 2M = $680

Subtracting 12 from both sides:

2M = $680 - 12

2M = 668

Dividing both sides by 2:

M = 668/2

M = 334

For finding number of movies put value of M in eq 1

C = 334 + 6

C = 340

So The number of commercials is 340 and the number of movies are 334.

i hope it will help you!

6 0

3 years ago

The time for a professor to grade an exam is normally distributed with a mean of 16.3 minutes and a standard deviation of 4.2 mi

dangina [55]

Answer:

A.0.4477

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

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

The Z-score 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. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 16.3, \sigma = 4.2$

What is the probability that a randomly selected exam will require between 14 and 19 minutes to grade?

This probability is the pvalue of Z when X = 19 subtracted by the pvalue of Z when X = 14. So

X = 19

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

$Z = \frac{19 - 16.3}{4.2}$

$Z = 0.64$

$Z = 0.64$ has a pvalue of 0.7389.

X = 14

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

$Z = \frac{14 - 16.3}{4.2}$

$Z = -0.55$

$Z = -0.55$ has a pvalue of 0.2912

0.7389 - 0.2912 = 0.4477

So the correct answer is:

A.0.4477

7 0

3 years ago

Suppose that cot θ = c and 0 < θ < π 2 . what is a formula for cos θ in terms of c?

loris [4]

Answer:

Step-by-step explanation:

Given cot θ = c and 0 < θ < π/2

In trigonometry identity:

cotθ = 1/tanθ = c

1/tanθ = c

cross multiply

tanθ = 1/c

According to SOH, CAH, TOA:

Tanθ = opposite/adjacent = 1/c

cosθ = adjacent/hypotenuse

To get the hypotenuse, we will use the pythagoras theorem:

hyp² = opp²+adj²

hyp² = 1²+c²

hyp = √1+c²

Find cosθ in terms of c

cosθ = c/√1+c²

Hence the formula for cos θ in terms of c is cosθ = c/√1+c²

5 0

3 years ago

(DONT ANSWER IF YOU GOING TO GIVE SOME TYPE OF LINK )please help me I’m begging ya I really need help if I don’t finish in 20 mi

Evgesh-ka [11]

Answer:

****NO LINKS OR REPORTING****

I need help with these, the answer options are as follows: always true, sometimes true, never true

Thank you!!

Step-by-step explanation:

pls help me with this question!!!

8 0

3 years ago