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3 years ago

HELP PLEASE!!!!! THESE ARE MY LAST POINTS HELP!!

Mathematics

1 answer:

Aleks04 [339]3 years ago

4 0

9514 1404 393

Answer:

x ≈ 10.6

Step-by-step explanation:

The mnemonic SOH CAH TOA is intended to help you remember the relationship between trig functions and side of a right triangle. In particular, when the opposite side and hypotenuse are involved, the desired relation is ...

Sin = Opposite/Hypotenuse

For your triangle, this is ...

sin(62°) = x/12

x = 12·sin(62°)

x ≈ 10.6

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Factor n^3 - n^2 + 3n - 3.

lozanna [386]

N^2(n - 1) + 3(n - 1)

(n^2 + 3)(n - 1)

the answer is c

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3 years ago

Jeremy's score was 1.75 standard deviations above the mean. which kf thr following is closest to his percentile rank

Gelneren [198K]

The answer is 96%.

Explanation:
It is generally presumed that the scores are normally distributed.

1) You are given how many standard deviations from the mean Jeremy's score is. This is exactly the definition of the z-score. Therefore z = 1.75

2) Look at a left-tail z-table in order to find the area of the normal curve on the left of your z-score (see picture attached). A = 0.9599

3) Multiply the area by 100 in order to find the percentile:
0.9599 × 100 = 95.99
Therefore, 95.99% of the students scored less than Jeremy.

Hence, the answer is 96%.

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4 years ago

What is the answer for this please 23÷23

baherus [9]

Answer:

Step-by-step explanation:

Any number divided by itself equals 1. So, 23 divided by 23 is 1.

8 0

2 years ago

What is the measure of LXZW? 850 150° Y 65° 95 Z 215° W 30°

Semenov [28]

Answer:

so the answer is 95°

Step-by-step explanation:

The two angles on a line add up to 180° or are supplementary, so we can find the inside angle x by doing 180-150=30°. Now that we know inside x is 30, if we add 30+65, we get 95, and 180-95=85°. Then to find angle xzw, just do 180-85 to get 95°.

3 0

3 years ago

Vertex of x^2-10x+30

Shtirlitz [24]

The easiest way to find the vertex is to convert this standard form equation into vertex form, which is y = a(x - h)^2 + k.

Firstly, put x^2 - 10x into parentheses: y = (x^2 - 10x) + 30

Next, we want to make what's inside the parentheses a perfect square. To do that, we need to divide the x coefficient by 2 and square it. In this case, the result is 25. Add 25 inside the parentheses and subtract 25 outside of the parentheses: y = (x^2 - 10x + 25) + 30 - 25

Next, factor what's inside the parentheses and combine like terms outside of the parentheses, and your vertex form is: y = (x - 5)^2 + 5.

Now going back to the formula of the vertex form, y = a(x - h)^2 + k, the vertex is (h,k). Using our vertex equation, we can see that the vertex is (5,5).

3 0

4 years ago

Read 2 more answers