R
b) In the given figure, show that triangle PQR is a right angled triangle. ​

Answer:

[tex]P(-2<Z<2)=95\%[/tex]

Step-by-step explanation:

From question we are told that

Sample mean [tex]\=x= 47[/tex]

Standard deviation [tex]\sigma =7[/tex]

Generally the  X -Normal is given as

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

      [tex]Z=\frac{x-47}{9}[/tex]

Analyzing the range

    [tex]P(47<x<65) = P(0< z<2.00)[/tex]

    [tex]P(47<x<65) = 95/2[/tex]

   [tex]P(47<x<65) = 47.5\%[/tex]

Mathematically

[tex]Z_1 =\frac{47-47}{9} =0[/tex]

[tex]Z_2 =\frac{65-47}{9} =2[/tex]

Empirical rule shows that

[tex]P(-2<Z<2)=95\%[/tex]

Answer:

-8

Step-by-step explanation:

i feel its correct

Answer:

60

Step-by-step explanation:

2.094= hummingbird

176= elephant

176-2.094= 173.906

approximately it will be 60

60 is closer to 173.906 than 600.

Answer:

11

Step-by-step explanation:

42 + 39= 81 and you need to get to 180 so the 3rd angle would be 99 so 99 dived by 9 is 11 so x=11

Answer:

(p+,7)2 the number 2 is to be above 7 hope this helps

The solution to the equation is x = 21/4

What is Linear Equation in 1 variable?

The linear equations in one variable is an equation which is expressed in the form of ax + b = 0, where a and b are two integers, and x is a variable and has only one solution

Given data ,

The equation is x + 7/2 = 5x/3

Subtracting 7/2 on both sides , we get

x = 5x/3 - 7/2

x = ( 10x - 21 ) / 6

Multiplying 6 on both sides , we get

6x = 10x - 21

Adding 21 on both sides , we get

6x + 21 = 10x

Subtracting 6x on both sides , we get

4x = 21

Divide by 4 on both sides , we get

x = 21/4

Hence , the solution for  x + 7/2 = 5x/3 is x = 21/4

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Answer:

On a coordinate plane, a point is 3 units to the left and 5 units up. Another point is 4units to the right and 3 units down

Step-by-step explanation:

The coordinate plane is a plane formed from the intersection of the x axis (horizontal line) and y axis (vertical line). The point of intersection of these axis is known as the origin. A point can be represented on the coordinate plane using the x and y coordinates.

The x axis is to the left and right of the origin, negative points are to the left of the origin while positive points are to the right of the origin. The y axis is to the up and down of the origin, negative points are to the down of the origin while positive points are to the up of the origin.

A point in the coordinate plane is represented as (x, y).

The location of point (-3,5) is 3 units to the left and 5 units up while point (4, -3) is 4units to the right and 3 units down

Answer:

24

Step-by-step explanation:

Given that:

Baseball album holds 3 baseball cards per page

Number of pages in album = 8

3 baseball cards per page

Number of baseball cards album can hold

(Number of baseball cards per page * number of pages in album)

(3 * 8) = 24

Answer:

x = 18

Step-by-step explanation:

Given that m is parallel to m, therefore:

(7x - 7)° = (6x + 11)° (alternate exterior angles are congruent)

Solve for x

7x - 7 = 6x + 11

7x - 6x = 7 + 11

x = 18

Answer:  She has 90% of her brooches at the end

Step-by-step explanation:

If she lost 10% of her brooches then 90% will be left, and another 10% will make it 80% left bus since she managed to find 10% then 10% plus 80% will be 90%.

Answer:

each friend will receive 2 oatmeal bars and their will be 2 leftover.

Step-by-step explanation:

Answer: False.

Step-by-step explanation: Rational and irrational numbers are the opposites of each other. If a number is rational, it cannot possibly be irrational.

Think about it this way, can a negative number be both negative and positive? No, of course not. This is the exact same concept, albeit using rational and irrational instead of positive and negative. Still, a number can only be one or the other, never both.

Tell msrkmark me brainlist please.

The answer is yes 4th one 8s your answer.

Step-by-step explanation:

because I like to make sure that people pass

Answer:

$80 billion

Step-by-step explanation:

From the graph, we have the following:

[tex]United\ States = -110[/tex]

[tex]Denmark = -30[/tex]

[tex]China = 120[/tex]

[tex]Germany = 40[/tex]

[tex]Spain = 30[/tex]

Required

Determine the difference in US and Denmark exports

The difference is calculated as thus:

[tex]Difference = Denmark - United\ States[/tex]

This gives:

[tex]Difference = -30 - (-110)[/tex]

[tex]Difference = -30 +110[/tex]

[tex]Difference = 80[/tex]

Hence, the difference is $80 billion

Answer:

If your question looked like this: China's net exports are represented by a positive integer. Explain what this tells you about imports and exports of China.

A. China's exports exceed imports by 120 billion dollars.

C.

China's total exports are 120 billion dollars.

B.  China's total imports are 120 billion dollars.

D.  China's imports exceed exports by 120 billion dollars.

Step-by-step explanation:

Then your answer is

A. China's exports exceed imports by 120 billion dollars

Answer:

25, 25, 22.5, 22

Step-by-step explanation:

It gives you a hint; K = y/x. They give you what x and y are so use that to solve for the last row.

We are given all of these values:

x -> 2, 3, 4, 5

y -> 50, 75, 90, 110

Use the formula given and solve for K.

50/2 = 25

75/3 = 25

90/4 = 22.5

110/5 = 22

Best of Luck!

Answer:

4.5587

Step-by-step explanation:

this is because standard form of numbers are supposed to be 1 and 9

Answer:

4 .5587 * [tex]10^{7}[/tex]

Answer:

In the explanation

Step-by-step explanation:

x = 0, y = -2*0+11=11

x = 1, y = -2*1+11=9

x = 4, y = -2*4+11=3

Hope this helps!

Answer:

[tex]122 = x - 58 \\ x = 122 + 58 \\ x = 180 \\ error = 0.5 \times {10}^{ - 3} \\ = 0.0005[/tex]

Answer:

Step-by-step explanation:

Grace should have added 58 to both sides of the equation instead of subtracting.

Answer:

Product for A = 046

Product for B = 0230

Sum for C = 0.0276

Step-by-step explanation:

We need to multiply the terms and find the answers

First we multiply 2 with 0.23, then we multiply 1 with 0.23

   0.23

x    0.12

-------------

     046

   0230

--------------

    .0276

Since there are 2 numbers after decimal in 0.23 and same for 0.12, so we place the decimal so that there are 4 decimal places.

Counting of decimal will start from the units place.

So, Product for A = 046

Product for B = 0230

Sum for C = 0.0276

Answer:

It's wrong.  The correct answer is -3 1/8x + 6 3/10

Step-by-step explanation:

You don't need to do the first two numbers of each equation but you want to consider the last part of the equation since each of them is different.  Convert 2 1/5 to 2 2/10 to make it easier.  Because you are subtracting two negative numbers, they will actually add so 2 2/10 + 4 1/10 equals 6 3/10 which makes the second option applicable.

Answer: A, B, and C

Step-by-step explanation:

Area = Length x Width

A. With these dimensions, the area would be 18 sq units

1 * 18 = 18

B. With these dimensions, the area would be 18 sq units

3 * 6 = 18

C. With these dimensions, the area would be 18 sq units

6 * 3 = 18

D. With these dimensions, the area would be 80 sq units

8 * 10 = 80

9514 1404 393

Answer:

  20%

Step-by-step explanation:

The percentage change in a value is calculated from ...

  percent change = ((new value) -(old value))/(old value) × 100%

For your given numbers, this is ...

  percent change = (12 -10)/10 × 100% = (2/10)×100% = 20%

Craig's record collection increased by 20%.

Answer:

2-7X=4+8X

Step-by-step explanation:

Answer:

7.6

Step-by-step explanation:

19/5 = 3.8

So,

3.8 x the amount of gallons = the amount of litres

If we have 2 gallons, then,

3.8 x 2 = 7.6

Answer:

7.6

Step-by-step explanation:

Add it

Answer:

A

Step-by-step explanation:

The velocity of a moving body is given by the equation:

[tex]v=t^2-5t+4 ,\, t\geq0[/tex]

Is the velocity is positive (v>0), then our object will be moving forwards.

And if the velocity is negative (v<0), then our object will be moving backwards.

We want to find between which interval(s) is the object moving backwards. Hence, the second condition. Therefore:

[tex]v<0[/tex]

By substitution:

[tex]t^2-5t+4<0[/tex]

Solve. To do so, we can first solve for t and then test values. By factoring:

[tex](t-4)(t-1)=0[/tex]

Zero Product Property:

[tex]t=1, \text{ and } t=4[/tex]

Now, by testing values for t<1, 1<t<4, and t>4, we see that:

[tex]v(0)=4>0,\, v(2)=-2<0,\,\text{ and } v(5)=4>0[/tex]

So, the (only) interval for which v is <0 is the second interval: 1<t<4.

Hence, our answer is A.

please friend complete your answer

Answer:

the value of f(5) is 26.672

Option (E) 26.672 is the correct answer

Step-by-step explanation:

Given that;

f(1) = 2 and f(x) = √( x³ + 6 )

f(5) = ?

f(5) = f(1) + ₁∫⁵ f'(x) dx

we substitute

f(5) = 2 + ₁∫⁵ √( x³ + 6 ) dx

f(5) = 2 + ₁∫⁵ √( x³ + 6 ) dx

f(5) = 2 + 24.6719

f(5) = 26.672

Therefore the value of f(5) is 26.672

Option (E) 26.672 is the correct answer

The value of f(5) is 26.672

Given the following parameters

f(1) = 2

f(x) = √( x³ + 6 )

We need to calculate the value of f(5) as shown below

f(5) = f(1) + ₁∫⁵ f'(x) dx

Substitute the given parameters

f(5) = 2 + ₁∫⁵ √( x³ + 6 ) dx

f(5) = 2 + ₁∫⁵ √( x³ + 6 ) dx

f(5) = 2 + 24.6719

f(5) = 26.672

Hence the value of f(5) from the solution is 26.672

Learn more on continuous function here: https://brainly.com/question/18102431

Answer:

Step-by-step explanation:

The point means that 15 pounds of beans cost 12 dollars.

Answer:

89% of pebbles weigh more than 2.1 grams.

Step-by-step explanation:

Given that

Mean = 2.6

SD = 0.4

As we have to find the percentage of pebbles weighing more than 2.1, we have to find the z-score for 2.1 first

[tex]z = \frac{x-mean}{SD}\\z = \frac{2.1-2.6}{0.4}\\z = -1.25[/tex]

Now we have to use the z-score table to find the percentage of pebbles weighing less than 2.1

So,

[tex]P(x<-1.25) = 0.10565[/tex]

This gives us the probability of P(z<-1.25) or P(x<2.1)

To find the probability of pebbles weighing more than 2.1

[tex]P(x>2.1) = 1 - P(x<2.1) = 1 - 0.10565 = 0.89435[/tex]

Converting into percentage

[tex]0.89435*100 = 89.435\%[/tex]

Rounding off to nearest percent

89%

Hence,

89% of pebbles weigh more than 2.1 grams.

Answer:

89%

Step-by-step explanation: