HELP HELPP PLEASEEEE!

HELP HELPP PLEASEEEE!

Answers

Answer 1
the length is b 12 !
Answer 2

Answer:

Step-by-step explanation:

volume of pyramid with square base=a^2(h/3)

84=a^2*7/3

84*3/7=a^2

252/7=a^2

36=a^2

[tex]\sqrt{36[/tex]=a

6=a

therefore length=6


Related Questions

Confusion...help please

Answers

Given:

In triangle KLM, KL = 123 cm and measure of angle K is 35 degrees.

To find:

The length of the side KM to the nearest tenth of a centimeter.

Solution:

In a right angle triangle,

[tex]\cos \theta =\dfrac{Base}{Hypotenuse}[/tex]

In the given right triangle KLM,

[tex]\cos K=\dfrac{KM}{KL}[/tex]

[tex]\cos (35^\circ)=\dfrac{KM}{123}[/tex]

[tex]0.819152=\dfrac{KM}{123}[/tex]

Multiply both sides by 123.

[tex]0.819152\times 123=KM[/tex]

[tex]100.755696=KM[/tex]

[tex]KM\approx 100.8[/tex]

The measure of side KM is 100.8 cm.

Therefore, the correct option is (2).

A company makes windows for use in homes and commercial buildings. The standards for glass thickness call for the glass to average 0.325 inch with a standard deviation equal to 0.065 inch. Suppose a random sample of n = 44 windows yields a sample mean of 0.337 inch.

Required:
What is the probability of x >= 20.337 if the windows meet the standards?

Answers

Answer:

0.1102 = 11.02% probability of x >= 0.337 if the windows meet the standards.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

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 p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

The standards for glass thickness call for the glass to average 0.325 inch with a standard deviation equal to 0.065 inch.

This means [tex]\mu = 0.325, \sigma = 0.065[/tex]

Sample of 44

This means that [tex]n = 44, s = \frac{0.065}{\sqrt{44}}[/tex]

What is the probability of x >= 0.337 if the windows meet the standards?

This is 1 subtracted by the p-value of Z when X = 0.337. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{0.337 - 0.325}{\frac{0.065}{\sqrt{44}}}[/tex]

[tex]Z = 1.225[/tex]

[tex]Z = 1.225[/tex] has a p-value of 0.8898

1 - 0.8898 = 0.1102

0.1102 = 11.02% probability of x >= 0.337 if the windows meet the standards.

Demand per hour for gasoline at a local station is normally distributed with a mean of 1510 gallons and std deviation of 57 gallons. What is the probability that demand for a particular hour is greater than 1600 gallons? Enter your answer as a decimal, rounded to 4 decimal places

Answers

Answer:

0.057168

Step-by-step explanation:

Given :

Mean = 1510

Standard deviation = 57

P(X > 1600)

To obtain the Zscore we use

(x - mean) / σ

P(Z > 1600) = P(Z > (x - mean) / σ)

P(Z > (x - mean) / σ) = P(Z > (1600 - 1510) / 57)

P(Z > 1.579) = 0.057168 (Z probability calculator)

Solve for x. 4(x - 1) + 3x = 31*

Answers

Answer:

x=5

Step-by-step explanation:

4(−1)+3=31

4−4+3=31

To which graph does the point (−1, 3) belong?

y ≥ 2x + 6
y ≥ 3x − 1
y ≥ −x + 4
y ≥ −2x + 5

Answers

Answer:

second option "y ≥ 3x − 1."

Step-by-step explanation:

Just solved it

What is the volume of a sphere with a surface area of 25pi / (d ^ 2)

Answers

Answer:

B. [tex] \frac{125}{6}* \pi [/tex] yd³

Step-by-step explanation:

Given:

Surface area of a sphere = 25π yd²

Required:

Volume

Solution:

Let's find the radius (r) first.

S.A of sphere = 4πr²

Substitute

25π = 4πr²

Divide both sides by 4π

25π/4π = r²

25/4 = r²

Take the square root of both sides

√25/√4 = r

5/2 = r

r = 5/2 yd

Find the Volume of the sphere

V = ⁴/3*πr³

V = ⁴/3*π*(⁵/2)³

V = ⁴/3*π*125/8

V = ⅓*π*125/2

V = [tex] \frac{1*125}{3*2}* \pi [/tex]

V = [tex] \frac{125}{6}* \pi [/tex] yd³

Combine any like terms in the expression. If there are no like terms, rewrite the expression.
3v+2v–2v

Answers

Sorry if I’m wrong but I think it’s 3v

A line segment's measurement(s) include which of the following?
Check all that apply.
A. None of these
B. Width
C. Height
D. Length

Answers

Answer:

D. Length

Step-by-step explanation:

We measure the length of a line segment, and thus, the correct answer is given by option D.

The length of a line segment is the distance between it's endpoints, using the formula for the distance between two points given below.

Distance between two points:

Suppose that we have two points, [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]. The distance between them is given by:

[tex]D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

Find the value of x.
71
O
(16x-2)
x=

Answers

Answer:

x = 9

Step-by-step explanation:

m<K = 71°

arc JL = 16x - 2

m<k = ½(arc JL) => inscribed angles theorem

Substitute

71 = ½(16x - 2)

Multiply both sides by 2

71*2 = 16x - 2

142 = 16x - 2

Add 2 to both sides

142 + 2 = 16x - 2 + 2

144 = 16x

Divide both sides by 16

144/16 = 16x/16

9 = x

x = 9

Please help me
Due today.

Answers

Answer:

C.

Step-by-step explanation:

D or C

Hope this helps!

if the simple interest on $1000 for 10 years is $400, then what is the interest rate?

Answers

The interest rate on this problem would be 4 percent

Mary needs to reflect point B, which is located at (4, 9), over the y-axis. Write the coordinate that is a reflection of point B over the y-axis?
Include ( ) around your coordinate.

Answers

Answer:

(-4,9)

Step-by-step explanation:

When you reflect over the y axis, The X coordinate changes to opposite, the Y doesn't change

HELP PLS IM FAILING MATH AND NO ONE IS HELPING ILL MARK U BRAINLIEST

Answers

Answer:

X = 30

Step-by-step explanation:

You can find the answer by solving for line RS through the corresponding ratio and adding it to the known value of ST.

Match each to the best answer.

Answers

The matches are
1c
2a
3d
4b

Would anyone help me with this,please ?

Answers

Answer:

angle 2 and 4....1and 3

Step-by-step explanation:

the lines bisects each other forming two equal but adjacent angles which are vertically opposite

Please help me!
Will give brainlst :)

Answers

Answer:

Step-by-step explanation:

Answer:

this is a line with a slope of 1 and a y-intercept of 3

A tray contains 16 cocholate chip cookies and 12 oat meal raisin cookies. HOw many ways cna a child select 3 cookies that include at least 1 chocolate chip cookie

Answers

Answer:

there are three ways

Step-by-step explanation:

three choclate chip

two choclate chip one oatmeal rasin

1 choclate chip 2 oatmeal rasin

Help me plsssssssss :(

Answers

Answer:

I would love to help you but what am I helping with there is no question there other that "Help me plssssss"

Step-by-step explanation:

Find the measure of z.

regular pentagon


120°


144°


108°


135°

Answers

The measure of m∠z is 135°.

What is Octagon?

A closed two-dimensional figure having eight sides, eight vertices, and eight interior angles is known as an octagon. An octagon is referred to as a regular octagon if all of its sides and internal angles are of equal length; otherwise, it is referred to as an irregular octagon.

As, Each inner angle is the same measure because it is a regular octagon.

To calculate the interior angle sum of a polygon, we have a formula.

The total internal angle of a polygon

= (n -2)180°, where "n" is the number of sides.

Here, n = 8

Then, sum of the interior angles.

= (8 -2)180

= 6 x 180

= 1080°

Thus, the measure of m∠z = 1080/ 8  = 135°

Learn more about Octagon here:

https://brainly.com/question/11658698

#SPJ7

Which value of x makes the equation 2+4(6-2x)= 8 true?​

Answers

Answer:

Step-by-step explanation:

2+4(6-2x)=8

2+24-8x=8

26-8x=8

26-8=8x

18/8=x

2.25=x

substitute the value of x

2+4(6-2x)

2+4(6-2*2.25)

2+6

8

therefore 8=8 so it is true

Answer:

Did this about a year ago but you should try math-way it gives the correct answers, and if you by any chance are doing ap ex go to those online tutors. You decide if it's camera on or off. Sorry I couldn't help more, it's been a while.

Name 5 possible values for x from the inequality 2x ≤ 28

Answers

Answer:

1, 2, 3, 4, 5

If you substitute these values, it will be below 28

Alternative method:

x <= 28/2

x <= 14

Hence, all values 14 and below can be used

Feel free to mark it as brainliest :D

HELP PLEASE If 2x−y = 0 and x−2y=3, then 6x−6y =
(A) 6
(B) 12
(C) 18
(D) 21
(E) 24

Answers

Answer:

A) 6

Step-by-step explanation:

Write the Equation of a line given slope and y-intercept or points
1) b = 17/5 and m=3

Answers

Answer:

I'm sorry hindi ko po alam

CAN SOMEONE PLSSS HELP ME! IT’S DUE TODAY. I NEED THE SURFACE AREA AND VOLUME...

Answers

Answer:

one of the triangles is 7.5, if you need both areas then it is 15cm2

Step-by-step explanation:

multiple 3x5=15, this will make it for a square. To create the triangle, you just divide it by two, because two triangel make a square.

root beer is priced at $2.88 for 6 cans

what is the cost of one can?

Answers

Answer:

0.48

hope this helps

have a good day :)

Step-by-step explanation:

need it asap please!!!!

Answers

the answer is 0 & 0 is a rational number. so the answer is rational.

Answer:

they are rational numbers

multiply 9 with 3.4? what will be the answer
PLEASE HELP ME FAST

Answers

[tex]\boxed{30.6}[/tex] ✅

[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}[/tex]

[tex]9 \times 3.4 \\ = 30.6[/tex]

[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.}}}}}[/tex]

a number less than 20 amounts to three times the number

Answers

Answer:

20 - x = 3x

Step-by-step explanation:

A number less than 20 amounts to three times the number

20 - x = 3x

Plz help PppppLz plz someone worth 21 pt and brainlest

Answers

Answer:

This is a case of direct variation. Hence,

210/1=x/2

x=420

since 2 pandas eat it each day hence

420/7

=60

60 pounds is the answer.(sure)

Step-by-step explanation:

Hope it helps you.

Answer: 60 pounds

Step-by-step explanation:

210 pounds a week

Divide by 7 days (a week)

Equals 30 pounds a day/ per panda

There is 2 pandas so 30 pounds times 2 equals 60 pounds

Evaluate the following
6!

Answers

Answer:

Mind showing a picture?

Thank you!

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