Can someone help me please for brainliest?

Answer:

Since the sample size is increased, the variability will decrease.

Step-by-step explanation:

took the quiz

Answer:

The given equation has TWO positive integer valued solutions, {6, 7}

Step-by-step explanation:

Here we are given two trinomial factors, each of which needs to be set equal to zero and in each case the resulting quadratic equation solved.

(x^2 - 7x + 11) has the coefficients {1, -7, 11}, and so the discriminant of this quadratic is b^2 - 4(a)(c), or 49 - 4(11), or 5.

Because this discriminant is positive, we know immediately that this quadratic has two real, unequal roots involving √5 (NO integer roots).

Next we focus on (x^2 - 13x + 42).  The discriminant is b^2 - 4(a)(c), or

169 - 168, or 1.  Again we see that there are two real, unequal roots:

      +13 ± √1                  +13 ± 1

x = ---------------  or  x = -------------

             2                            2

OR x = 14/2 = 7 (integer) or x = 12/2 = 6 (integer).

The given equation has TWO positive integer valued solutions, {6, 7}

I think the answer is C :)

Answer:

A 61

Step-by-step explanation:

Cos A = 0.4848

A = cos ^-1(0.4848)

A = 61

Answer:

????????????......???????.

Answer:

area = 828.27 cm²

Step-by-step explanation:

add a line from X, perpendicular to WY, call this point A.

angle Y = 180 - 33 - 121 = 26 degrees

sin 26 = XA/49

0.4384 = XA/49

XA = 21.48 which is the height of the triangle

cos 26 = YA/49

0.8988 = YA/49

YA =  44.04

tan 33 = 21.48/WA

0.6494 = 21.48/WA

WA = 33.08

YW = 77.12

(YW)(XA)(0.5) = area

(77.12)(21.48)(0.5) = area = 828.27 cm²

Answer:

1. draw a circle inside the triangle

2. draw a circle through those dots

3. draw a circle outside the triangle but through the dots

4. create a triangle with the same angle and length and draw a circle inside that triangle

5. Draw a right triangle (with 90 degrees; could be 45-90-45 or 30-60-90)

a. hypotenuse is the diameter of the circle

b. hard to explain but it should look like this: (link)

Answer:

if what you're asking if 0 belongs to anyone of the sets then zero belongs to whole numbers.

whole numbers is 0,1,2,3,4 etc

Natural numbers are 1,2,3,4 etc

integers are -3,-2,-1,0,1,2,3 etc

rational numbers are like fractions etc

irrational numbers are when you don't necessarily get a exact or whole numbers for example like π/pie

Answer:

do you mean seconds in an hour?

Step-by-step explanation:

Answer:

-5 x -12

Step-by-step explanation:

the distance between Dan and jeff is 26 feet

Answer:

your answer is option B

Step-by-step explanation:

hope it helps!!

have a nice day ^_^

Answer:

2 cents/inch

Step-by-step explanation:

12 inches in a foot, 4 feet: 12*4 = 48 inches

.96/48 = .02

Answer:

10.5

Step-by-step explanation:

225÷21.50

=10.46511

=10.5(3sf)

Given:

The three equations for the three numbers are

[tex]a=x^2-y^2[/tex]

[tex]b=2xy[/tex]

[tex]c=x^2+y^2[/tex]

To find:

The Pythagorean triple generated by using 4 for x and 1 for y.

Solution:

Substituting x=4 and and y=1 in the given equations, we get

[tex]a=4^2-1^2[/tex]

[tex]a=16-1[/tex]

[tex]a=15[/tex]

In the same way find b and c.

[tex]b=2(4)(1)[/tex]

[tex]b=8[/tex]

The third number is

[tex]c=4^2+1^2[/tex]

[tex]c=16+1[/tex]

[tex]c=17[/tex]

The required Pythagorean triple is 8, 15, and 17.

Therefore, the correct option is C.

Answer:

(12, -3)

Step-by-step explanation:

Add 4 to x value because it is a horizontal translation right 4.

Answer:

X = 12

Step-by-step explanation:

the total degree of any triangle is 180.

therefore I took (7x + 4) + (5x + 3) + ( 2x + 5) = 180

I replace the Xs with 12 and then the answer is 180

(7(12) + 4) + (5(12) + 3) + ( 2(12) + 5) = 180

Answer:

Step-by-step explanation:

Example 1:

Evaluate the following expression:

4 + (3x +y)

When x = 2 and y = 9

3 x 2 is 6 after that you just add 6+9+4 which is 19

Example 2:

Evaluate the expression when x=8 and y=9

x(y - 9)^3 + 2

=8(9-9)^3+2

=8(0)^3+2

=8(0)+2

=0+2

=0

I hope this helps :)

Step-by-step explanation:

no picture just uploade again

Answer:

Step-by-step explanation:

a). Volume of a rectangular prism = Length × width × height

                                                        = 13 × 8 × 12

                                                        = 1248 cubic ft

     Surface area of a rectangular prism = (lb + bh + hl)

     Here, l = length, b = width and h = height of the rectangular prism

     Surface area of the given prism = (13×8 + 8×12 + 12×13)

                                                           = 356 square ft

b). If the shed is made of metal,

    Metal needed to make the shed = Volume

c). The shed is used for the storage.

    Measure would be used → Surface area

Answer:

can i see the rest of it

Step-by-step explanation:

Answer:

Medium

Step-by-step explanation:

The computation is shown below:

The cost for the small and medium bag is shown below:

As we know that

1kg = 1000g

So 3kg = 3000g

Now for small bags

= 0.95 ÷ 250 × 3000

= £11.40

For medium bags

= £1.80 ÷ 500 × 3000

= £10.80

So here the medium bag would represent the better value

Answer:

5/8 or 0.625 for wins

3/8 for lost

Answer:

A has the larger area.

Step-by-step explanation:

You can find a rectangle's are by multiplying its width by its height.

For triangle A the width is 5, and the height is 3.  5 × 3 = 15

For triangle B the width is 6 and the height is 2.  6 × 2 = 12

15 is greater than 12, so rectangle A has a larger area than rectangle B.

The area of rectangle [1] is greater than rectangle [2].

A rectangle is a plane figure with four straight sides and four right angles, especially one with unequal adjacent sides, in contrast to a square.

Given are two rectangles.

Assume that the side of the square block is 1 unit.

Now, for rectangle [1], we can write -

A [1] = L x B = 5 x 3 = 15 units square

For rectangle [2], we can write -

A [2] = L x B = 6 x 2 = 12 units square

Now, A[1] > A[2]

Therefore, the area of rectangle [1] is greater than rectangle [2].

To solve more questions on 2 - D figures, visit the link below-

brainly.com/question/16739227

#SPJ2

Answer:

y + 3= -7(x + 2)

Step-by-step explanation:

...........

Answer:

Angle A is 52 degrees           Angle B is 78 degrees

Step-by-step explanation:

The angles all have to add up to 180.

2x + 3x + 50 = 180

5x + 50 = 180

Subtract 50 from both sides

5x = 130

Divide each side by 5

x = 26

Solve

A) 2 * 26 = 52

B) 3 * 26 = 78

--------Check--------

52 + 78 +50 = 180

180 = 180

Answer:

53.846153846154%

Step-by-step explanation:

Answer:

35/65 x 100 = about 53.85