Help solve for X. I will give brainliest to the best answer!!! PLEASEEEE

Answer:

a

Step-by-step explanation:

What is really saying is solve the quadratic equation

[tex]-16t^2+64t+80=0 \\ t^2-4t-5=0 \\ (t-5)(t+1)=0 \implies t_1=5,t_2=-1 [/tex]

Hope this helps.

Answer:

x  =  −26

Explanation:

Solve for  x  by cross multiplying.

k would be located at

Answer:

False

Step-by-step explanation:

The sum of angles of a parallelogram is equal to 180°. So,

8x+3y+2x+(7x+18)=180

or

17x+3y = 180-18

17x+3y = 162

Put x = 44 and y = 18 in the above expression.

So,

17(44)+3(18) = 748+54

= 802

≠ 162

Hence, the given statement is false.

Answer:

B

Step-by-step explanation:

On edge

The probabilities is the greatest for a standard normal distribution is

P(-0.5 ≤ z ≤ 0.5) = 0.382.

An example of a continuous probability distribution is the normal distribution, in which the majority of data points cluster in the middle of the range while the remaining ones taper off symmetrically towards either extreme. The distribution's mean is another name for the centre of the range.

From the diagram attached below, we can write

1. P( -1.55 ≤ z ≤ -0.5)

= 0.092 + 0.15

= 0.242

or, 9.2%+15%=24.2%.

2. P( -0.5 ≤ z ≤ 0.5)

= 0.191 + 0.191

= 0.382

3. P( 0.5 ≤ z ≤ 1.5)

= 0.15 + 0.092

= 0.242

4. P( 1.5 ≤ z ≤ 2.5)

= 0.044 + 0.017

= 0.061

So, the greatest value is P(-0.5 ≤ z ≤ 0.5) = 0.382

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Answer:

91 cm squared

Step-by-step explanation:

Find the area of the rectangle 7 x 10=70

Triangle are (6 x 7)/2=21

Add 21+70=91

Answer:

91

Step-by-step explanation:

Answer:

I believe it's true

Step-by-step explanation:

I hope this helps

11 I think

(someone correct if I am wrong plz)

Answer:

10.5

Step-by-step explanation:

7 =  x

8   12

8x = 84

8     8

x = 10.5

Answer:

11a+5

Step-by-step explanation:

-5a-6a-3+8

=11a+5

Answer:

The total surface area of the shape is 376 square inches.

Bonus: the volume is 240 cubic inches.

Step-by-step explanation:

I'm not going to draw this for you, but to get the area, you just need to add up the area of the 6 rectangles.

First though, you need to know what they are.  This is easier than it may seem though.  You just need to remember that this will be folded into a rectangular box.  You are given three side lengths, which is all that is needed for a box.

That is to say, you're given the width, height and length of this box.  It's 10x8x6 inches.

so if you take every possible pairing of those numbers:

10x8

10x6

8x6

you have the area of all of the shapes.  The only catch is that there are two of each size.  Front and back are the same size, left and right are, and so are top and bottom.

So the total area of the shape is:

(front and back) + (left and right) + (top and bottom)

= (2 × 10 × 8) + (2 × 10 × 6) + (2 × 8 × 6)

= 160 + 120 + 96

= 376

Or rather, 376 square inches.

Bonus: the volume is much easier, being just 10 × 8 × 6, or 240 cubic inches.

Answer: 3.1 or 3.10

Step-by-step explanation:

3 and 10 hundredths = 3 + 10/100 = 3 + 0.10

3.10 / 3.1

Answer:

In decimal 0.428571428

Step-by-step explanation:

The slope = (y2 - y1)/(x2 - x1) y2 = 16, y1 = 19x2=2 and x1=9

The slope = (16 - 19)/(2 -9)

The slope = (-3)/(-7)

The slope = 0.428571428

So in decimal form the coordinates are going to be written as 0.428571428

Slope is the steepness of a line, it is the difference between the y coordinates divided by the difference in x coordinates.

Answer:

135

Step-by-step explanation:

x×1=45×3

cross multiply

x=135

To divide 4 by 3.2, we can use long division.

Here's the step-by-step process:

        1.25

   ___________

3.2 | 4.00

      3.2     (subtract 3.2 from 4.00)

   _______

        8

        6.4   (bring down the 0)

   _______

        16

        16    (subtract 16 from 16, no remainder)

   _______

         0

Therefore, 4 divided by 3.2 is equal to 1.25.

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Answer:

area would be 98.35

Step-by-step explanation:

the area is 98.35 units squared

Answer: 1 hour 38 minutes

Step-by-step explanation:

From 11:51 AM to 12:00 PM (noon)

9 minutes

from 12:00 PM to 1:00 PM

1 hour

1:00 PM to 1:29 PM

29 minutes

______________________________

9 minutes + 1 hour + 29 minutes

1 hour 38 minutes

Answer:

a) The average weight is 199 pounds.

b) The probability that the maximum safe weight will be exceeded is 0.4840 = 48.40%.

c) The probability that the maximum safe weight will be exceeded is 0.3539 = 35.39%.

Step-by-step explanation:

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 zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

(a) If 56 people are on the elevator, and their total weight is 11,144 pounds, what is their average weight?

This is 11144 divided by 56, that is 11144/56 = 199 pounds.

Their average weight is 199 pounds.

(b) If a random sample of 56 adult men ride the elevator, what is the probability that the maximum safe weight will be exceeded?

The weights of adult U.S. men have mean 196 pounds and standard deviation 71 pounds, which means that [tex]\mu = 196, \sigma = 71[/tex]

11144 pounds is an average of 199 pounds, so this probability is 1 subtracted by the pvalue of Z when X = 199.

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

[tex]Z = \frac{199 - 196}{71}[/tex]

[tex]Z = 0.04[/tex]

[tex]Z = 0.04[/tex] has a pvalue of 0.5160

1 - 0.5160 = 0.4840

The probability that the maximum safe weight will be exceeded is 0.4840 = 48.40%.

(c) If a random sample of 56 adult women ride the elevator, what is the probability that the maximum safe weight will be exceeded?

The weights of adult U.S. women have mean 169 pounds and standard deviation 80 pounds, which means that [tex]\mu = 169, \sigma = 80[/tex]

11144 pounds is an average of 199 pounds, so this probability is 1 subtracted by the pvalue of Z when X = 199.

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

[tex]Z = \frac{199 - 169}{80}[/tex]

[tex]Z = 0.375[/tex]

[tex]Z = 0.375[/tex] has a pvalue of 0.6461

1 - 0.6461 = 0.3539

The probability that the maximum safe weight will be exceeded is 0.3539 = 35.39%.

Answer:

6x +12

Step-by-step explanation:

Answer:

There were 25 questions total on the test.

Step-by-step explanation:

Hope this helps!

Step-by-step explanation:

Product of 3 and 12 means 3 multiplied by 12

which is equal to 12*3

Hope it helps!

Answer:12+3 or 3 + 12

Step-by-step explanation:in math and means adition so

12 and 3 as an expression would be 12 +3

Answer:

Answer is 8 and 3/4

Answer:

the answer would be 8 3/4 in

Answer:

80%

Step-by-step explanation:

Answer:

Step-by-step explanation:

at the bottom it has a key and the key shows blue that had the urea supplement and green with out.  the graph has a higher amount of growth for the plants with the urea supplement and green with about half the growth.

so you could say something like this: over the course of three months the plants with the urea supplement had almost double the amount of growth the plants without the urea supplement did, over all the the urea increased the amount of growth the plants had over the 3 month time span. :)

The conclusion from the farmer's data can be made is the fertilizer with urea supplement  is more effective than the fertilizer without it.

A histogram is the way of representation of data which is used to show the frequency distribution using the rectangle similar to bar graph.

Farmers' group conducted an experiment to determine which fertilizer is better for plant growth. One fertilizer contains a urea supplement, while the other does not contain the urea supplement.

For the experiment, they randomly selected 20 plants of the same species growing in their area. The farmers tested the urea-enhanced fertilizer on 10 plants and the non-urea fertilizer on the other 10 plants.

After three months, they reported their findings as shown.​ Let's understand what happen in each month,

Thus, the conclusion from the farmer's data can be made is the fertilizer with urea supplement  is more effective than the fertilizer without it.

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