What is the value of r? What is the length of segment EF? units

Answer:

The mean length of the 13 people's big finger is 15.45 cm

Step-by-step explanation:

Given;

mean length of 4 childrens' big finger, x' = 14cm

mean length of 9 adults' big finger is 16.1cm, x'' = 16.1cm

Let the total length of the 4 childrens' big finger = t

[tex]x' = \frac{t}{n} \\\\x' = \frac{t}{4}\\\\t = 4x'\\\\t = 4 *14\\\\t = 56 \ cm[/tex]

Let the total length of the 9 adults' big finger = T

[tex]x'' = \frac{T}{N} \\\\x'' = \frac{T}{9}\\\\T = 9x''\\\\T = 9*16.1\\\\T = 144.9 \ cm[/tex]

The total length of the 13 people's big finger = t + T

                                                                           = 56 + 144.9

                                                                            =200.9 cm

The mean length of these 13 people's big finger;

x''' = (200.9) / 13

x''' = 15.4539 cm

x''' = 15.45 cm (2 DP)

Therefore, the mean length of the 13 people's big finger is 15.45 cm

Answer:

1 goes into not pro

2 goes to not pro

3 goes into pro

and 4 goes into not pro

Step-by-step explanation:

proportional is a straight line

non proportional is not a line

Answer:

the answer shoudl be OB 4

Answer:

2x5²

Step-by-step explanation:

[tex]25 = 2 \times 5 \times 5 = 2 \times {5}^{2} \\ [/tex]

Answer:

2x5²

Step-by-step explanation:

Answer:

Perfect squares

Step-by-step explanation:

Here, we have a list of some numbers and we want to know the name given to these numbers.

Mathematically, these numbers are referred to as perfect squares.

Although all numbers have square roots, not all numbers have integer square root values.

Numbers having integer square root values otherwise known as whole number square root values are referred to as perfect squares.

Answer: 1,2,3,4

Step-by-step explanation:

The domain consists of every x value

Answer:

choice c

Step-by-step explanation:

y axis shows value of computer

v-intercept; x axis = 0

show initial value of the computer

Answer:

(a) Shown below.

(b) Shown below.

(c) The probability that a person does not learn Spanish is 0.18.

(d) The probability that method B was used given that a student learned the Spanish successfully is 0.83.

Step-by-step explanation:

(a)

Consider the provided data.

[tex]P(A)=0.20\\P(B)=0.80\\P(L|A)=0.70\\P(L|B)=0.85[/tex]

Then the probability of not learning Spanish using the respective methods are:

[tex]P(L'|A)=1-P(L|A)=1-0.70=0.30\\\\P(L'|B)=1-P(L|B)=1-0.70=0.15[/tex]

(b)

The Probability Tree representing each of the probabilities mentioned above is attached below.

(c)

Compute the probability that a person does not learn Spanish as follows:

[tex]P(L')=P(L'|A)P(A)+P(L'|B)P(B)[/tex]

         [tex]=(0.30\times 0.20)+(0.15\times 0.80)\\\\=0.06+0.12\\\\=0.18[/tex]

Thus, the probability that a person does not learn Spanish is 0.18.

(d)

Compute the probability that method B was used given that a student learned the Spanish successfully as follows:

[tex]P(B|L)=\frac{P(L|B)P(B)}{P(L|A)P(A)+P(L|B)P(B)}[/tex]

            [tex]=\frac{(0.85\times 0.80)}{(0.70\times 0.20)+(0.85\times 0.80)}\\\\=\frac{0.68}{0.14+0.68}\\\\=0.82927\\\\\approx 0.83[/tex]

Thus, the probability that method B was used given that a student learned the Spanish successfully is 0.83.

Answer:

I hope it will help you.......

Answer:

a. 7cm

b. 30m

Step-by-step explanation:

b. Formula of perimeter is 2(l + b)

= 2(10 + 5) = 2(15) = 30 m

a. Capacity of the cylinder is 1078 cm^3 but we have equal radius and height

Let’s call the height h which of course is the depth.

The radius is also h too

Using the formula for the volume of a cylinder;

Mathematically we have;

V = pi * r^2 * h

but in this case;

V = pi * h^2 * h

V = pi * h^3

1078 = 22/7 * h^3

h^3 = (1078 * 7)/22

h^3 = 343

h = cube root of 343

h = 7cm

So the depth of the cylindrical tank when full is 7cm

Answer:

72x^8

Step-by-step explanation:

Product of ;

3 √(16x^7) * 3 √(12x^9)

Let’s factor out all perfect squares in the roots

3 √(16 * x^4 * x^3) * 3 √(4 * 3 * x^8 * x)

Taking out the perfect squares, we have;

3 * 4 * x^2 * √(x^3) * 3 * 2 * √3 * x^4 * √(x)

72 * x^(2 + 4) * √(x^3 * x)

72 * x^6 * √(x^4)

72 * x^6 * x^2

72 * x^8

Answer:

Down

Stretched by a factor of 2

Step-by-step explanation:

The transformed function is translated to the right along the x-axis and stretched by a scale factor of 2.

A transformation is a general term for four specific ways to manipulate the shape and/or position of a point, a line, or geometric figure.

Given is a function, y = [tex]\sqrt[3]{x}[/tex] being transformed into y = [tex]\sqrt[3]{8x} -3[/tex]

We see, that, in the function, 3 is being subtracted from x, we mean the translation is right along the x-axis

And, ∛x is converted into 2∛x, that shows a stretched in the graph,

Hence, The transformed function is translated to the right along the x-axis and stretched by a scale factor of 2.

For more references on transformation, click;

https://brainly.com/question/11709244

#SPJ2

Answer:

5/6

Step-by-step explanation:

hello

in total there are 12 numbers

C has two items

so C' has 10 items

so the probability that this number is in set C' is 10/12=5/6

hope this helps

Answer:

[tex]\boxed{\sf \ \ x = 1 \ \ }[/tex]

Step-by-step explanation:

Hello,

First of all we need to take x different from 3 as dividing by 0 is not allowed

then for x real different from 3

[tex]f(x)=0\\\\<=> \dfrac{x-1}{x-3}=0\\\\<=> x-1 = 0\\\\<=> x = 1[/tex]

hope this helps

Answer:

72

Step-by-step explanation:

We are assuming that all girls in the group bought the same number of items.

Therefore, we need to find the highest common factor of 72, 144 and 216.

HCF

72 = 2 * 2 * 2 * 3 * 3

144 = 2 * 2 * 2 * 2 * 3 * 3

216 = 2 * 2 * 2 * 3 * 3 * 3

The product of the emboldened numbers is the highest common factor.

That is:

2 * 2 * 2 * 3 * 3 = 72

Therefore, the largest possible number of girls in the group is 72.

Answer: $35

Step-by-step explanation:

From the question, we are informed that the current bill of the person is $140.00 per month and that the person wants to decrease the bill by 25%.

To know the amount that the person needs to deduct, we have to calculate 25% of $140.00. This will be:

= 25% of $140

= 25/100 × $140

= 1/4 × $140

= 0.25 × $140

= $35

The person will need to remove $35. The person will now pay ($140 - $35) = $105 monthly.

The amount that could be removed to achieve the specified reduction is $35.00

From the question,

We are to determine what should be removed from the current bill to decrease it by 25%

From the given information,

The current bill = $140.00 per month

Now, we will determine 25% of $140.00

That is,

[tex]\frac{25}{100}\times \$140.00[/tex]

= 25 × $1.40

= $35.00

Hence, the amount that could be removed to achieve the specified reduction is $35.00

Learn more here: https://brainly.com/question/10610667

Answer:

Option D is the correct answer.

Step-by-step explanation:

A-p-e-x :)

Hey there! :)

Answer:

B. The volume of Cylinder B is larger.

Step-by-step explanation:

Find the volumes of each cylinder using the formula V = πr²h:

Cylinder A:

V = π3² · 5

V = 9π · 5

V = 45π units³

Cylinder B:

V = π5²· 3

V = 25π · 3

V = 75π units³

75π u³ > 45π u³, so the volume of Cylinder B is larger.

Answer:

The answer is option A.

Hope this helps you

Answer:

1/2 or 0.5

Step-by-step explanation:

Saying that there is a 50-50 chance of an event happening is equivalent to saying there is a 1 in 2 chance. Therefore, expressing that degree of likelihood as a value between 0 and 1:

[tex]\frac{1}{2}=0.50[/tex]

There is a 1/2 or 0.5 chance that a randomly selected adult has pierced ears.

Answer:

1/2 or 0.5

Step-by-step explanation:

50-50 chance between 0-1 means half of 0-1 which is 1/2 or 0.5

1/2 or 0.5!

Answer:

992

Step-by-step explanation:

You must convert the meter the kilometer by miltiplying by 1000

and when you do it you must multiply 0.992 by 1000 since it is a fraction .

or you can work it this way :

Answer:

A, B, and E are all less than 1/8

Answer:

The history instructor has made a computational error.

Step-by-step explanation:

We have that the data represents the linear correlation coefficient and notes it is 1.15

The linear correlation coefficient value which is 1.15 does tell the instructor that the history instructor has made a computational error due to the linear correlation coefficient value falls in the range -1 to +1.

Therefore, the history instructor has made a computational error.

Step-by-step explanation:

A chord is a segment with endpoints on the circle.

A tangent line is a line that touches a circle at only one point.

A diameter is a chord that passes through the center of the circle.

A secant line is a line that touches a circle at two points.

Therefore, AB is a secant line.

The statement related to the diagram is true is that AB is the secant line.

A chord should be treated as the segment that contains the endpoints on the circle. A tangent line refers to the line that touches a circle at only one point. A diameter refer to a chord that passes via the center of the circle. A secant line should be a line that touches a circle at two points.

Hence, The statement related to the diagram is true is that AB is the secant line.

learn more about the line here: https://brainly.com/question/12489193

Answer:

166.6666 metres/second

Step-by-step explanation:

1 km/hr = 5m/18s

600*5/18

Answer:

6.43

pls follow me and mark brainliest ...thank u

Step-by-step explanation:

length of side x will be

Tan tita = opp/adjacent

tan65 = x/3

tan 65 is 2.14

so...you are left with 2.14=x/3

by cross multiplying

x= 2.14 × 3

= 6.43

Answer:

2

Step-by-step explanation:

-(1-√2) -(2-√3) + 1/√3 + 2+1/2+√5-(√5-√6)-(√6-√7)+ 1/√7+2√2+1/2√2+3

-1+√2-√2+√3-(√3-2)-(2-√5)-√5+√6-√6+√7-(√7-2√2)-(2√2-3)

-1+√2-√2+√3-√3+2-2+√5-√5+√6-√6+√7-√7+2√2-2√2+3

2

Answer:

D: 922.3682

Step-by-step explanation:

First you take 1000 and subtract 20 from it.( 2% of 1000 = 1000x0.02x2=20).

You could do this on a calculator by entering 1000 and then subtracting 2% by clicking minus then, 2 then percent, then equals. you get 980. do the same to 980. (click minus, then 2, then percent, then equals). you get 960.4. do the same to 960.4. you get 941.192. do the same one more time since it says t=4  and you get 922.36816 which rounded to the nearest ten-thousandths is 922.3682.

hope this helped!

Answer:

Step-by-step explanation:

hello,

for [tex]ax^2+bx+c=0[/tex]

[tex]\Delta = b^2-4ac[/tex]

so here

[tex]\Delta = b^2-4*(-4)*(-11)=b^2-176[/tex]

to have two complex solutions we need [tex]\Delta < 0\\[/tex]

so [tex]b^2<176[/tex]

[tex]<=> b < \sqrt{176}=13.266...[/tex]

for instance we can take b = 0

hope this helps

Answer:

The correct answer is 12.

Step-by-step explanation:

i got it correct on my test, thanks to comment on the question above.