I need help in this question

Answer:

2×r=2r

2r×9=18r

Hope this helps:)

Answer:

9(2r)

Step-by-step explanation:

2×r =2r

9×2r can be written as 9(2r)

We could write this as 18r but it is best to leave it at 9(2r)

Answer:

   Angle at x is 75°

Step-by-step explanation:

Data :

  Angle at A = 65°

  Angle at B = 40°

According to  the porperty of triangle we know that total interior angle a triangle has is 180° irrespect of type or size

              A + B + C = 180

      65 + 40 + C = 180

        C = 180 - 65 - 40 = 75°

Mark brainliest if you understand

Answer:

1560

Step-by-step explanation:

25 x 8 x 10 - 22 x 5 x 4 = 2000 - 440 = 1560

Answer: Given what i know about probability, you can determine if smoking and lung cancer are related by testing a group of smokers and non smokers and finding out the percent of each that develope lung cancer and the percent that dont for both

Step-by-step explanation:

Answer:

5,184

Step-by-step explanation:

multiply each unit by 6 and then you end up with 12, 24, and 18. Then you multiply all these answer by each other and get 5,184.

Answer:

See below

Step-by-step explanation:

Problem 4

[tex]H_0:p=0.40\\H_a:p>0.40[/tex]

Problem 5

[tex]H_0:p=0.42\\H_a:p<0.42[/tex]

Make sure to read the problems and translate it into math

Answer:

Step-by-step explanation:

This is a basic right angle problem relating to Pythagoras theorem as one approach.

we know.

[tex]a^2+b^2=y^2[/tex]

(letting the hypotenuse of the left triangle as y)

then,

[tex]7^2+8^2=y^2\\y=\sqrt{113}[/tex](neglecting negative root)

now since you know the value of y use the same formula to find the value of x. Keep in mind the identification of opposite , adjacent and hypotenuse sides.

Answer:

AB = 7

Step-by-step explanation:

The y-coordinate of point A and B is the same.

Therefore, both points lie on the same horizontal line (y = 2).

So determine the distance between them, subtract the x-coordinate of B from the x-coordinate of A:

AB = 4 - -3 = 4 + 3 = 7

However, to calculate the distance between 2 points, regardless if the points are on a horizontal (or vertical) line, you can always use the distance between 2 points formula that is derived from Pythagoras' Theorem, as follows:

let [tex](x_1,y_1)[/tex] = point A (4, 2)

let [tex](x_2,y_2)[/tex] = point B (-3, 2)

using the distance between two points equation:

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

[tex]\implies AB=\sqrt{(-3-4)^2+(2-2)^2}[/tex]

[tex]\implies AB=\sqrt{(-7)^2+(0)^2}[/tex]

[tex]\implies AB=\sqrt{49}[/tex]

[tex]\implies AB=7[/tex]

*Edited to add a plot diagram*

Answer:

10 2/3 = 10.6667

27 1/2 = 27.5

Step-by-step explanation:

8 ÷ 3/4

Convert any mixed numbers to fractions.

Then your initial equation becomes:

[tex]\frac{8}{1}[/tex] ÷ [tex]\frac{3}{4}[/tex]

Applying the fractions formula for division,

[tex]=\frac{8*4}{1*3}[/tex]

=[tex]\frac{32}{3}[/tex]

Simplifying 32/3, the answer is

[tex]10 \frac{2}{3}[/tex]

Decimal Form = 10.6667

=================================================================

11 ÷ 2/5

Convert any mixed numbers to fractions.

Then your initial equation becomes:

[tex]\frac{11}{1}[/tex] ÷ [tex]\frac{2}{5}[/tex]

Applying the fractions formula for division,

[tex]=\frac{11*5}{1*2}[/tex]

=[tex]\frac{55}{2}[/tex]

Simplifying 55/2, the answer is

27 1/2

Decimal Form = 27.5

[RevyBreeze]

Answer:

The tamaraw or Mindoro dwarf buffalo (Bubalus mindorensis) is a small hoofed mammal belonging to the family Bovidae. It is endemic to the island of Mindoro in the Philippines, and is the only endemic Philippine bovine.

The worth of the bond is $307.50.

The worth of the bond is the sum of the bond when it was bought and the interest earned on the bond.

Worth of the bond = interest rate + value when the bond was bought

Interest = 105% x $150

1.05 x $150 = $157.70

Worth of the bond = $157.70 + $150 = $307.50

To learn more about interest, please check: https://brainly.com/question/26164549

Answer:

his present age is 6??

Step-by-step explanation:

correct me if im wrong^^

here I found it online

.......ya

hope this helpa

It's 360 feet (The person above)

Answer:

360 ft squared

Step-by-step explanation:

you have 3 (2 shapes but one is done twice)

2 rectangles and a larger rectangle

the 2 rectangles

3 is the width, and 15 is the length

15*3 = 45 * 2 (for the other one)

and you get 90ft squared

then you have the larger rectangle. it is 15 feet wide and 18 in length (15+3)

15*18 = 270

270 ft squared + 90 ft squared = 360 ft squared

Answer:

138 degrees

Step-by-step explanation:

its a cointerior angle so the angles add up to 180

so 180 - 42 = 138

Answer:

Step-by-step explanation:

If angle 4 has a measure of 42° in the given diagram, what is the measure of angle 6?

T is a flat angle (180°)

angle 4 = angle 8

angle 2 = angle 6

180 - 42 = 138°

Answer:

The dimensions of the park on the scale drawing are 12 inches by 20 inches

The actual dimensions are given as:

Park = 600 feet by 1000 feet

Swing set = 25 feet by 100 feet

The dimension of the swing set on the scale drawing is given as: 0.5 inch by 2 inches

The above means that, the scale factor (k) is:

--- i.e. divide the scale measurement by the actual measurement

Evaluate both equations

So, we have:

Multiply the scale factor by the dimensions of the park, to get the scale measurement

Hence, the dimensions of the park on the scale drawing are 12 inches by 20 inches

Read more about scale measurements at:

brainly.com/question/24579126

Step-by-step explanation:

Answer:

29 if I’m Wrong I’m sorry

Step-by-step explanation:

Answer:

Answer:

(3, 10)

Step-by-step explanation:

f(3) means substitute the value of x = 3 into f(x)

[tex]\implies f(3) = (3 \times 3) + 1 = 10[/tex]

Therefore, when x = 3, y = 10

So the ordered pair is (3, 10)

[tex]\\ \tt\longmapsto f(x)=3x+1[/tex]

[tex]\\ \tt\longmapsto f(3)=3(3)+1=9+1=10[/tex]

Pair is (3,10)

Product of two polynomials can be done by distribution of multiplication over addition. The product of  [tex]-2x(x^2 - 3)[/tex] is [tex]-2x^3 + 6x[/tex]

Suppose a, b and c are three numbers. Then we have:

[tex]a(b + c) = a\times b + a\times c[/tex]

(a(b+c) means a multiplied to (b+c). The sign of multiplication is usually hidden when using symbols and both quantities which are in multiplication are written together without space)

The product result of the given expression is

[tex]-2x(x^2 - 3) = -2x^{1 + 2} + 6x = -2x^3 + 6x[/tex]

It is because when bases are same and there is multiplication, then powers add up, so we have: [tex]a^b \times a^c = a^{b+c}[/tex]

Thus,

The product of  [tex]-2x(x^2 - 3)[/tex] is [tex]-2x^3 + 6x[/tex]

Learn more about product of polynomials here:

https://brainly.com/question/9106484

Answer:

waait Im ma wriiting

Step-by-step explanation:

hope it helps

Answer:

-3/4

Step-by-step explanation:

The slope of line passes through the points (-9,10) and (-13,13)​ is -3/4.

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the change in y coordinate with respect to the change in x coordinate as,

m = Δy/Δx

where, m is the slope

Given:

(-9,10) and (-13,13)​

So, slope= (13 - 10)/ ( -13 + 9)

slope= 3 / (-4)

slope= -3/4

Hence, the slope of line is -3/4.

Learn more about slope here:

https://brainly.com/question/3605446

#SPJ2

Answer:

22.5

Step-by-step explanation:

[tex]\frac{15}{6} = \frac{x}{9}[/tex]

cross multiply

15x = 6*9

15x = 54

devide 15 from both sides

x =  22.5

Answer:

30

Step-by-step explanation:

Since there are 900 today, and the variants square each day, we can take the square root of 900.

[tex]\sqrt{900} =30[/tex]

900 = q^2, so q = 30, so yesterday there were 30 variants

Step-by-step explanation:

the point-slope form in general is

y - y1 = m(x - x1)

where (x1, y1) are the coordinates of a point, and m is the slope.

so, we have

y - -1 = 4/3 × (x - 3)

or simplified

y + 1 = 4/3 × (x - 3)

Answer:

[tex]y + 1 =\frac{4}{3} (x-3)[/tex]

Step-by-step explanation:

We are given that a line contains the point (3, -1), and has a slope of [tex]\frac{4}{3}[/tex].

We want to write the equation of this line in point-slope form.

Point-slope form is given as [tex]y-y_1=m(x-x_1)[/tex], where m is the slope and [tex](x_1 ,y_1)[/tex] is a point.

Since we are already given the slope and the point of the line, we can plug these values into the formula to get the equation.

Let's start with the slope; replace m with [tex]\frac{4}{3}[/tex] in the formula.

[tex]y-y_1=\frac{4}{3}(x-x_1)[/tex]

Now, replace 3 as [tex]x_1[/tex] and -1 as [tex]y_1[/tex]. Remember that the formula has subtraction in it.

[tex]y--1=\frac{4}{3} (x-3)[/tex]

This can be simplified to become:

[tex]y + 1 =\frac{4}{3} (x-3)[/tex]

Topic: writing the equation of the line

See more: https://brainly.com/question/16888568

[tex]\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{60\% of 239.99}}{\left( \cfrac{60}{100} \right)239.99}\implies 143.994~\hfill \underset{\textit{sale price}}{\stackrel{239.99-143.994}{\approx 96}}[/tex]

Answer:

[tex]A=71\dfrac34 \ \ \textsf{ft}^2[/tex]

Step-by-step explanation:

Area = base x height

⇒ A = 10.25 x 7 = 71.75 = 71 3/4 ft²

Answer:

71 3/4 ft²

Step-by-step explanation:

the area is the product of the base (10 1/4) and height (7)

10.25 x 7 = 71 3/4 ft²