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3 years ago

All of these statements are true EXCEPT which one? A.

Mathematics

2 answers:

stiv31 [10]3 years ago

8 0

Answer:

where's the choices

Step-by-step explanation:

complete your question

Zolol [24]3 years ago

6 0

Answer:

Optio a is rhe right one

i m not sure

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Neil is a drummer who purchases his drumsticks online. When practicing with the newest pair, he notices they feel heavier than u

Fynjy0 [20]

Answer:

The probability of the stick's weight being 2.33 oz or greater is 0.0041 or 0.41%.

Step-by-step explanation:

Given:

Weight of a given sample (x) = 2.33 oz

Mean weight (μ) = 1.75 oz

Standard deviation (σ) = 0.22 oz

The distribution is normal distribution.

So, first, we will find the z-score of the distribution using the formula:

$z=\frac{x-\mu}{\sigma}$

Plug in the values and solve for 'z'. This gives,

$z=\frac{2.33-1.75}{0.22}=2.64$

So, the z-score of the distribution is 2.64.

Now, we need the probability $P(x\geq 2.33 )=P(z\geq 2.64)$ .

From the normal distribution table for z-score equal to 2.64, the value of the probability is 0.9959. This is the area to the left of the curve or less than z-score value.

But, we need area more than the z-score value. So, the area is:

$P(z\geq 2.64)=1-0.9959=0.0041=0.41\%$

Therefore, the probability of the stick's weight being 2.33 oz or greater is 0.0041 or 0.41%.

5 0

3 years ago

The area of a rectangle is 45 cm2. Two squares are constructed such that two adjacent sides of the rectangle are each also the s

lorasvet [3.4K]

Answer:

The length of sides of one square is 5cm and length of sides of another square is 9cm

Step-by-step explanation:

Let the length of rectangle be x and width of rectangle be y.

We have given,

Area of rectangle = 45 cm²

i.e. Area of rectangle = x·y = 45 or xy = 45 ---------(1)

Next, two squares are constructed from two adjacent sides of rectangle.

i.e Side length of one square will be x and side length of another square will be y.

Area of one square = x²

And area of another square = y²

According to problem,

Sum of area of two squares is 106 cm²

∴ x²+y² = 106 ---------------(2)

From equation (1) and (2) , we can find x and y.

xy = 45 or x = $\frac{45}{y}$ , Plug this in equation (2).

We get,

x² + y² = 106

or $(\frac{45}{y} )^{2} + y^{2} =106$

or $\frac{45^{2} +y^{4} }{y^{2} } =106$

or $45^{2} + y^{4} = 106y^{2}$

On solving this equation we get ,

y²=81 or 25

or y = 9 or 5

for y =9 , x= $\frac{45}{9} =5$

or for y = 5 , x = $\frac{45}{5} =9$

Hence the length of sides of one square is 5cm and length of sides of another square is 9cm

4 0

3 years ago

Read 2 more answers

246 divided by 3 using rectangular model

Alex_Xolod [135]

Answer:

82 is the answer

Step-by-step explanation:

hope it help you

4 0

3 years ago

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HEELPPP how do I solve this equation please do it step by step

docker41 [41]

Answer:

x = -24/7 or x = -3 3/7

Step-by-step explanation:

In this equation, the first thing we will do is to get rid of the denominators -- they complicate everything. So, we can multiply the entire equation by 10, since 10 is the lowest common multiple of 5 and 2, which are the denominators.

Then, the equation will look like this:

2(4x-2) + 5(1) = 5(3x+7) - 10(1)

Notice that the denominators will no longer exist.

Now, distribute on both sides of the equation.

The equation will look like this now:

8x - 4 + 5 = 15x + 35 - 10

Then, we must combine like terms. We want to isolate the variable x on one side of the equation. Let's isolate it on the right side. So, subtract 8x from both sides. The equation will look like this now: - 4 + 5 = 7x + 35 - 10

Now that x is on one side, let's move all the other terms to the left side. Subtract 25 from both sides (35 - 10 = 25 on the right side, get rid of it by subtracting 25). The equation now looks like this: - 4 + 5 - 25 = 7x

Finally, combine all on the left side.

Final equation: -24 = 7x

Now, we know 7x = -24. We want to solve for the value of x. So, divide both sides by 7.

x = -24/7 or x = -3 3/7

7 0

4 years ago

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The set of ordered pairs represented by the graph below can be described as which of the following?

notka56 [123]

A relation only
Because it is not a parabola

5 0

4 years ago

All of these statements are true EXCEPT which one? A.​

All of these statements are true EXCEPT which one? A.