i don't really understand this problem​

Answer:

The probability that a randomly chosen widget weighs more then 19 grams is 0.468.

Step-by-step explanation:

X = Widget weights produced at Acme Widget Works

It is provided that X is normally distributed with mean 17.46 grams and variance 375.67 grams.

Compute the probability that a randomly chosen widget weighs more then 19 grams as follows:

[tex]P(X>19)=P(\frac{X-\mu}{\sqrt{\sigma^{2}}}>\frac{19-17.46}{\sqrt{375.67}})[/tex]

                  [tex]=P(Z>0.08)\\\\=1-P(Z<0.08)\\\\=1-0.53188\\\\=0.46812\\\\\approx 0.468[/tex]

Thus, the probability that a randomly chosen widget weighs more then 19 grams is 0.468.

Answer:

The length of segment QA when Q(-7,10) and A(3,4) is √136 or 11.66 units

Step-by-step explanation:

Given points are:

Q(-7,10) and A(3,4)

Here

[tex](x_1,y_1) = (-7,10)\\(x_2,y_2) =(3,4)[/tex]

The distance between two points is the length of the segment formed by those two points. The distance between 2 points is given by:

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

Putting the values

[tex]d = \sqrt{(3-(-7))^2+(4-10)^2}\\d = \sqrt{(3+7)^2+(-6)^2}\\d = \sqrt{(10)^2+(-6)^2}\\d = \sqrt{100+36}\\d = \sqrt{136}\\d= 11.66\ units[/tex]

Hence,

The length of segment QA when Q(-7,10) and A(3,4) is √136 or 11.66 units

Answer:

the answer is 35

Step-by-step explanation:

Answer:

35 people are wearing sunglasses.

5 sets of 7 people are wearing sunglasses.

Step-by-step explanation:

60 divided by 12

= 5

5 x 7

= 35

35 people

35 divided by 7

= 5 sets of 7 people

Answer:

Please check the explanation.

Step-by-step explanation:

Considering the expression

[tex]9i+2\left(7+3i\right)[/tex]

        [tex]a\left(b+c\right)=ab+ac[/tex]

so the expression becomes

[tex]=9i+2\cdot \:\:\:7+2\cdot \:\:\:3i[/tex]

Group like terms

[tex]=9i+14+6i[/tex]

Add similar elements: 9i+6i=15i

[tex]=15i+14[/tex]

Answer:

3/10 = x or 0.3 = x

Step-by-step explanation:

2.1 /  x + 1 4/5 = 3 / 10x

1. first cross multiply and solve it normally:

3 (x + 1 4/5) = (2.1) 10x

3x + 5 2/5 = 21x

-3x               -3x

5 2/5 = 18x

3/10 = x or 0.3 = x

these questions are kind annoying to solve because of the fractions, so if you can, use a calculator to solve them! its much easier!

hope this helps!

Answer:

x = 3/10 = 0.3

Step-by-step explanation:

{(2.1)/(x+1 4/5)} = 3/10x

x + 1 4/5 = x + 5/5 + 4/5 = x + 9/5

then:

(2.1)/(x+9/5) = 3/10x

10x*2.1 = 3(x+9/5)

21x = 3x+ 27/5

21x - 3x = 27/5

18x = 27/5

90x/5 = 27/5

90x = 27

x = 27/90

x = 3/10 = 0.3

C=C' - 81/2 In 9

hope it helps:))

Answer:

u ok? hang in there

Step-by-step explanation:

Its okay to feel sad, We all have those moments where we just want to find ourselves near the warm fireplace and find our peace and calming. Don't worry we are here for you!! ✨

Answer:

15 mins

Step-by-step explanation:

1. figure out how many minutes he rode his bike for (45x6=270)

2. subtract that from the total (360-270=90)

3. divide the total amount he jogged for by the days he jogged for (90/6 = 15)

4. the answer is Allen jogged 15 mins a day for 6 days

Pls Mark Brainliest

Answer:

[tex] x \ge -53 [/tex]

Step-by-step explanation:

A solid dot means [tex] \le [/tex] or [tex] \ge [/tex].

The solid dot is on -53.

The shading is to the right, so it is greater than or equal to.

Answer: [tex] x \ge -53 [/tex]

Answer:  the last one

Step-by-step explanation:  well it is clearly an grater than solusand and it is colored in not doted so its grater than or equal to

Answer:

£1,616.2

Step-by-step explanation:

1,496 - 149 = 1347

1347 + 269.20 = 1616.2

Answer: All I know is C is one of them. I’m trying lol

Step-by-step explanation:

Given :

The percent of concentration of a certain drug in the bloodstream x hours after the drug is administered is given by [tex]K(x) = \dfrac{5x}{x^2+9}[/tex].

To Find :

Find the time at which the concentration is a maximum. b. Find the maximum concentration.

Solution :

For maximum value of x, K'(x) = 0.

[tex]K'(x) = \dfrac{5(x^2+9)- 5x(2x)}{(x^2+9)^2}=0\\\\5x^2+45-10x^2=0\\\\5x^2 = 45\\\\x = \pm 3[/tex]

Since, time cannot be negative, so ignoring x = -3 .

Putting value of x = 3, we get, K(3) = 15/( 9 + 9) = 5/6

Therefore, maximum value drug in bloodstream is 5/6 at time x = 3 units.

Hence, this is the required solution.

Answer:

q= 158

Step-by-step explanation:

Answer:

$4.8 for sugar and $25 for butter.

Step-by-step explanation:

Answer:

Right

Step-by-step explanation:

20 boxes minus 9 boxes

Answer:

(-5,5)

Step-by-step explanation:

Answer:

the line perpendicular: x=-3

Step-by-step explanation:

Answer:

The x-intercept is (-6, 0) and the y-intercept is (0, 2)

Step-by-step explanation:

We are already given points where x = 0 and y = 0

The x-intercept is when y = 0

The y-intercept is when x = 0

So the x-intercept is (-6, 0)

and the y-intercept is (0, 2)

Answer:

24.4

Step-by-step explanation:

15.86 /0.65 = 24.4

Answer:

Personally, I think 1/9 lb.

<Plis choose me as brainliest!>

Answer:

B

Step-by-step explanation:

I did the test (; on egunity

It is accurate to say that there are 2:1 daisies to rose plants. Because the Daisy plant and the Rose have the numbers 2 and 4, respectively

It is described as the comparison of two quantities to determine how many times one obtains the other. The proportion can be expressed as a fraction or as a sign: between two integers.

It is given that, A community garden contains five types of plants. Two types are flowers: roses and daisies. The other three types are vegetable plants: cucumbers, bell peppers, and green beans.

Since the number of the Daisly plant and the rose is 2 and 4 respectively, its ratio is,

=Daisy plant: rose

=2:4

=1:2

Thus, it is accurate to say that there are 2:1 daisies to rose plants. Because the Daisy plant and the Rose have the numbers 2 and 4, respectively

Learn more about the ratio here:

brainly.com/question/13419413

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Answer:

4.2

Step-by-step explanation:

10.5/2.5= 4.2

Move the decimal in 10.5 over one to the right to get 105.0

Answer:

Divide how you normally would, without the decimals, then put the decimal back in its orginal position; this would result in 4.2.

Step-by-step explanation:

Answer:

D i think

Step-by-step explanation:

Answer:

A is the answer

Step-by-step explanation:

Anytime a number is being divided by 10 it moves to the left creating a decimal.Example : 5÷10 = 0.5 , 500÷10 = 50

Anytime a number is being multiplied by 10 the number increases with a 0. Example : 5 × 10 =50

I hope this helped

Answer:

A

Step-by-step explanation:

When it comes to division, we usually move to the left, but multiplication is to the right. Then it is division by 10, which has only one zero, so we move once to the left.

Answer:

82/15 but you can also write it as 5 7/15

Step-by-step explanation:

1 4/5= 27/15 3 2/3=55/15

27/15+55/15= 82/15

82/15 = 5 7/15

Answer:

5.48 inches

Step-by-step explanation:

Given that the poster is in the shape of a square.

Area of the square poster = 30 [tex]in^2[/tex]

To find:

The length of side of the poster = ?

Solution:

First of all, let us have a look at the formula for area of a square.

Let the side of square = [tex]x[/tex] inches

Formula:

[tex]Area =Side \times Side[/tex]

Putting the value of the side:

[tex]Area = x\times x\\[/tex]

Putting the value of Area as given in the question statement:

[tex]30 = x^2\\\Rightarrow x =\sqrt{30}\\\Rightarrow \bold{x \approx 5.48\ inches}[/tex]

Answer:

$9.14

Step-by-step explanation:

$15.50 + $13.45 + $16.75 = $45.70

   x              20%

45.70           100%      Cross multiply

45.70  x 20 = 914

914 divided by 100 = 9.14

Answer:

answer 28ab³ I think maybe

The area of the right-angled triangle is represented as the monomial [tex]12a^3b^4[/tex].

Here,

The formula to calculate the area of a right-angled triangle is:

Area = (1/2) * base * height

In this case, the right-angled triangle has a height of [tex]6ab^3[/tex] and a base of [tex]4a^2b[/tex].

Now, let's substitute these values into the formula:

Area = [tex](1/2) * 4a^2b * 6ab^3[/tex]

Now, simplify the expression:

Area = [tex]2 * a^2b * 6ab^3[/tex]

To find the monomial representation, multiply the coefficients and add the exponents of like terms:

Area = [tex]12a^{(2+1)}b^{(1+3)[/tex]

Finally, simplify the exponents:

Area = [tex]12a^3b^4[/tex]

So, the area of the right-angled triangle is represented as the monomial [tex]12a^3b^4[/tex].

To learn more on triangle area click:

brainly.com/question/19305981

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Answer:

the months would be the x axis and the numbers would be the y axis and the increments could start at 45k and have to go up to 800k don't forget the years with the months