For to 30-60-90 triangle below, the length of side AB is 52 cm.
Find the length of CB.

PLZ

Answer:

b is 9

Step-by-step explanation:

okay

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Answer:

its 9 this has to be at least 20 characters

Answer:

Givn : OK = 3, OJ = 30, KN = 1, JM = 3

ON=OK+KN=3+1=4

OM=OJ+JM=30+10=40

In triangles OKJ & ONM,

OKOJ=330=110

ONOM=440=110

Angle O is common in both the triangles.

Two sides are in same proportion and the included angle is common (SAS) . Hence both the triangles are similar.

That means KJNM=110 or the two sides are parallel.

Hence ˆK=ˆN,ˆJ=ˆM corresponding angles.

Answer:

∠BDC=43°

Step-by-step explanation:

Since ABCD is a rectangle, ∠ADC=90

∠ADC=∠BDC+∠ADB

90=(7x+1)+(9x-7)

90=16x-6

16x=96

x=6

∠BDC=7x+1

=7(6)+1

=42+1=43

Answer: 1 m is 9 there are 7 m so 7X9 =63

Step-by-step explanation:

Answer:

the answer would be 9

expination:

because 63 divide by 7 would be 9

Answer:

Axis of symmetry: [tex]-\frac{3}{7}[/tex]

The y-intercept: y= (0, -8)

The vertex is: [tex]( -\frac{3}{7} , -\frac{65}{7} )[/tex]

Step-by-step explanation:

My work is shown in the images... :)

I hope I helped, and I always appreciate brainliest!!!  :)

Answer:

7) 3m + 21

8) 8t + 12

9) 45 + 30r

10) 32n - 16n or just 16n

Step-by-step explanation:

just use the distributive property

Hope this helped! Have a nice day! Plz mark as brainliest!!!

-XxDeathshotxX

Answer:

no, because the pythagorean theorem doesnt work out with those numbers.

Step-by-step explanation:

since (3^2)+(6^2) isnt 8^2

Answer:

All i have is the area which is 4.5·π cm² + 18 cm² =

Step-by-step explanation:

Answer:

What is the perimeter

so it will end up at 6y-6

you need to combine everything that does not have an exponent (example. a, x, y) and you combine the ones that have exponents together. and therefore you get 6y-6 (remember positive and negative signs)

Answer:

Based on the given data, there is no evidence to support the claim that the standard deviation of the heights of women aged 25 to 34 have a different standard deviation from men aged 25 to 34

Step-by-step explanation:

The standard deviation for the heights of men aged 25 to 34, σ₀ = 2.9

The population variance, σ₀ = 2.9² = 8.41

The significance level of the test = 0.05

The number of randomly selected women in the sample, n = 16

The given heights of the 16 randomly selected women are listed as follows;

62.13, 65.09, 64.18, 66.72, 61.15, 67.50, 64.65, 63.09, 63.80, 64.21, 60.17, 68.28, 66.49, 62.10, 65.73, 64.72

By using the Mean (Average) and standard deviation of a sample formula from Microsoft Excel, we have;

The mean height of the women, [tex]\overline x[/tex] = 63.37563

The standard deviation of the variance, s₂ = 2.2 78511

The null hypothesis, H₀; σ = 2.9

The alternative hypothesis, H₀; σ ≠ 2.9

The chi-square test is given as follows;

T = (N - 1)(s/σ₀)²

Therefore, we have;

T = (16 - 1)(2.278511/2.9)² ≈ 9.2597

The critical value for the lower tail = 6.908

The critical value for the upper tail = 28.845

For the critical region, we have;

Reject H₀ if T <6.908 or T > 28.845

Therefore, given that the critical T is larger than 6.908 and less than 28.845, we fail to reject the null hypothesis, and there is not enough statistical evidence to prove that there is a difference in the standard deviation of the heights of men and women aged 25 to 34

Answer:

0.55

Step-by-step explanation:

The numerator of the fraction with a denominator of 100 is the number you put on the right of the decimal pt.

Answer:

0.55

Step-by-step explanation:

55/100 = 0.55

You just move decimal two places to the right. Hope this helps, thank you :) !!

Answer:

b divide both sides by 6

Step-by-step explanation:

6a = 72 if you divided each side by 6 you will get

a = 12 which would bring you to the actual answer.

Answer:

y+8=-2(x-4)

Step-by-step explanation:

point-slope form is y-y1=m(x-x1) where m is the slope, and (x1,y1) is a point.

We are given all of that information:

slope: -2

point: (4,-8)

substitute the numbers into the equation

y--8=-2(x-4)

we can make --8 to positive 8

so:

y+8=-2(x-4)

this is the equation in point-slope form

Hope this helps!

Answer:

0

Step-by-step explanation:

6 - 3x = 4 - x - 3 - 2x

6 - 3x = -3x + 1

Add 3x to both sides.

6 = 1

Since the last equation, 6 = 1, is false after doing legal steps, that means that the equation is false and has no solution.

Answer: 0

Yes the Frist question is 15 students

the second question is 5 well I mean if you do it by Khan academy

the third one is well three dozen eggs are cracked, so probably 12?

Answer:

same, equal measure

Hope it helps

Please mark me as brainliest

Thank you

Answer:

C

Step-by-step explanation:

What are the parts and functions of the brain stem?

To sum up, the brain stem is the lowest anatomical region of the brain. The brain stem is divided into three major parts; the midbrain, the pons, and the medulla. The brain stem controls the bulk of autonomic physiological functions, including respiration, heartbeat, reflexes, digestion, and sleep.

resource: sciencetrends.com

Answer:

do you have to add the numbers together or multiply

Answer:

Solution given:

laternal section area =perimeter of triangle×length

=(15+8+17)×9=360mm²

Answer:Hlello, my name is woods245.

So you have the problem b - 3>5 and is says that b=6.

So know the problem looks like this. 6 - 3>5.

Step-by-step explanation:

Answer:

3v=70

divide both side by 3

=70/3 or ~23.33333

angles sum: 180(6-2) = 720

50 + 37 + 42 = 129

129 + 5x + 7x - 1 + 3x + 40 = 720

15x + 168 = 720

15x = 552

x = 36.8

check:

129 + 5(36.8) + (3(36.8) + 40) + (7(36.8) - 1) = 720

Correct answer??

180-50 = 130

180-37 = 143

180-42 = 138

Known internal angles:

130 + 143 + 138 = 411

15x + 39 + 411 = 720

15x = 270

x = 18

Answer:

0

Step-by-step explanation:

Distribute:

=(6)(3x)+(6)(−5)+(2)(3x)+(2)(−5)+(−8)(3x)+(−8)(−5)

=18x+−30+6x+−10+−24x+40

Combine Like Terms:

=18x+−30+6x+−10+−24x+40

=(18x+6x+−24x)+(−30+−10+40)

=0

Answer:

the answer is d

Step-by-step explanation:

Answer:

Step-by-step explanation:

BCDE is rotated 180° counterclockwise to form JKLM.

JKLM is rotated 180° clockwise to form BCDE

JKLM is rotated 180° counterclockwise to form BCDE.

Answer:b c d

Step-by-step explanation:

i failed so you can sucseed

1- not sure, but my guess is C

2- 113? what did i do: I added all the sides and subtracted them by 720

3- 75

#3 maybe be wrong, sorry if it is

i think it B

okkkkkkkkkkkkkkkkkkk

Answer:

The answer is C

I hope this helped.