Please answer CORRECTLY !!!!!!!!!! Will mark BRIANLIEST !!!!!!!!!!

Answer:

(a) 0.4 or 40%

(b) 0.1 or 10%

Step-by-step explanation:

(a) If you get 4 "ones" after 10 rolls of the die, the proportion of the rolls that resulted in "ones" is:

[tex]p=\frac{4}{10}\\ p=0.4[/tex]

(b) If you get 2 "ones" after 20 rolls of the die, the proportion of the rolls that resulted in "ones" is:

[tex]p=\frac{2}{20}\\ p=0.1[/tex]

Answer:

6 hours

Step-by-step explanation:

What we must do is calculate the speed of each one,

Melissa in one hour plants 10 trees, that is 10/1 is her speed.

Jane in two hours plants 17 trees, that is 17/2 is her speed.

Now, we want to know the time it takes to plant 11 trees, so the sum of the previous speeds is equal to 111 / x

10/1 + 17/2 = 111 / x

18.5 = 111 / x

x = 111 / 18.5

x = 6

Which means that in 6 hours between the two they can plant 111 trees

Answer:

The present age of Joyal is 14 years.

The present age of Joyal's mother is 42 years

Step-by-step explanation:

Let J denotes the age of Joyal

Let M denotes the age of Joyal's mother

The present age of Joyal’s mother is three times the present age of joyal.

Mathematically,

M = 3J

After 5 years their ages will add up to 66

Mathematically,

(M + 5) + (3J + 5) = 66

M + J + 10 = 66

M + J = 66 - 10

M + J = 56

But we know that M = 3J

3J + J = 56

4J = 56

J = 56/4

J = 14 years

So the present age of Joyal is 14 years.

M = 3J

M = 3(14)

M = 42 years

So the present age of Joyal's mother is 42 years.

Answer:

r = -20

Step-by-step explanation:

–7r= –8r−20

Add 8r to both sides

r = -20

Answer:

[tex] \boxed{r = -20} [/tex]

Step-by-step explanation:

[tex] = > - 7r = - 8r - 20 \\ \\ = > - 7r + 8r = - 20 \\ \\ = > 8r - 7r = - 20 \\ \\ = > r = - 20[/tex]

Answer:

C) a quadrilateral, because angle C and angle X are acute

Step-by-step explanation:

It is a quadrilateral because angle C and angle X are acute angles and not right angles option third is correct.

It is defined as the four-sided polygon in geometry having four edges and four corners. It has two pairs of congruent sides and one pair of opposite congruent angles.

From the Pythagoras theorem:

[tex]14^2=12^2+8^2[/tex]

196  ≠ 208

The angles C and X are not right angles since angles C and X are congruent and acute angles.

Thus, it is a quadrilateral because angle C and angle X are acute angles and not right angles option third is correct.

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Answer:

Slope: 1/2

Y-Intercept: 0

Step-by-step explanation:

Use the slope formula and the slope-intercept form to find the slope  (m)  and y-intercept  (b ).

Answer:

Stan needs about 50 of the 39 cm x 39 cm tiles

or about 155 of the 18 cm x 27 cm tiles

Step-by-step explanation:

Since we are asked to consider only matters of area, we need to calculate first, the area of the patio:

Patio area = 3 m x 2.5 m = 7.5 m^2

Now we consider what surface (in square meters - m^2) each type of tiles cover:

a) for the 39 cm x 39 cm tiles: 0.39 m x 0.39 m = 0.1521 m^2

b) for the 18 cm x 27 cm tiles: 0.18 m x 0.27 m = 0.0486 m^2

Therefore, to cover the area of the patio, the number of tiles type "a" needed is given by the quotient:

7.5 m^2 / 0.1521 m^2 = 49.3096  (about 50 tiles)

while for type "b" tiles the quotient gives:

7.5 m^2 / 0.0486 m^2 = 154.32  (about 155 tiles)

Answer:

2698 yd^2

Step-by-step explanation:

2·(22x25 + 22x17 + 25x17) = 2698 yd^2

SA = 2(LW) + 2(LH) + 2(HW)

Let L = Length

Let W = Width

Let H= Height

Answer:

16

Step-by-step explanation:

Answer:

3/11 for two red balls

2/11 for two green balls

Step-by-step explanation:

6 red and 5 green balls

Answer:

3/11

2/11

Step-by-step explanation:

Answer:

B

Step-by-step explanation: If you look at the graph, the only graph with (0,0) is B

Answer:

B

Step-by-step explanation:

Answer:

No. The den will have 8 times the volume of the bedroom.

Step-by-step explanation:

The architect wants the bedroom to have the dimensions of 8 ft by 4 ft by 7 ft. Let's find the volume of the bedroom:

8 * 4 * 7 = 224 cubic feet

The architect doubles all three dimensions to create the den. This means that the den has dimensions as 16 ft by 8 ft by 14 ft.

The volume of the den is:

16 * 8 * 14 = 1792 cubic feet

Double of 224 cubic feet is 448 cubic feet.

Hence, the den will not have double the volume of the bedroom instead it will have a volume 8 times the that of the bedroom.

Doubling the initial dimensions of 8 ft. by 4 ft. by 7 ft. means that the

volume will 8 times the initial volume or 1,792 ft.

The dimensions of the room = 8 ft. by 4 ft. by 7 ft.

The amount by which the architect increases the dimension = Double the dimensions

Solution;

The volume of the room, V = 8 ft. × 4 ft. × 7 ft. = 224 ft.³

When the dimensions are doubled, we have;

Length = 2 × 8 ft. = 16 ft.

Width = 2 × 4 ft. = 8 ft.

Height = 2 × 7 ft. = 14 ft.

The new volume of the bedroom = 16 ft. × 8 ft. × 14 ft. = 1792 ft.³

Therefore;

Scale factor of volume = (Scale factor of length)³

Therefore;

Doubling the dimensions means that the volume of he room will be

multiplied by 2³ = 8 rather doubling the initial volume.

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Answer:

the answer is B

Step-by-step explanation:

based on coordinate (3,2) :

y ≥ 4/3(3) - 2

2 ≥ 2

based on coordinate (-3,-6)

y ≥ 4/3(-3) -2

-6 ≥ -6

* the symbol is ≥ because the shaded region is above the line

Answer:

There are 12 choices for the blue ribbon, 11 choices for the red and 10 choices for yellow so the answer is 12 * 11 * 10 = 1320.

Answer:

Angle y is also 40 degrees. Angle x and y are vertical angles, thus they have the same angle measure.

Answer:

50

Step-by-step explanation:

its simple just the degrees is equal orr close to that

Answer:

4m−3(2m + 1)

= 4m - 3*2m - 3*1

= 4m - 6m - 3

= -2m - 3

Hope this helps!

:)

Answer:

-2m - 3

Step-by-step explanation:

Remember to follow PEMDAS. First, distribute -3 to all terms within the parenthesis:

-3(2m + 1) = (-3 * 2m) + (-3 * 1) = -6m + (-3)

4m - 6m - 3

Simplify. Combine like terms:

(4m - 6m) - 3

(-2m) - 3

-2m - 3 is your answer.

~

Answer:

Choice C

Step-by-step explanation:

Using the Pythagorean theorem, you can find that the length of the hypotenuse is:

[tex]\sqrt{3^2+5^2}=\\\\\sqrt{9+25}=\\\\\boxed{\sqrt{34}}[/tex]

Hope this helps!

Answer:

[tex]c=\sqrt{34}[/tex]

Step-by-step explanation:

Using the Pythagorean theorem (a^2 + b^2 = c^2), you can find the hypotenuse

Begin by plugging in 3 into a and 5 into b.

3^2 + 5^2 = c^2

9 + 25 = c^2

34 = c^2

Then, take the square root of both sides.

[tex]\sqrt{34} =\sqrt{c^{2} }[/tex]

[tex]c=\sqrt{34}[/tex]

The expression that is equivalent to √-12 is √12i

In mathematics, a complex number is an element of a number system that extends the real numbers with a specific element denoted i, called the imaginary unit and satisfying the equation[tex]i^{2}=-1}[/tex] every complex number can be expressed in the forma + bi, where a and b are real numbers.

Given here,  √-12= √12×√-1

                            = √12i

Hence, The expression that is equivalent to √-12 is √12i

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Answer:

free points

Step-by-step explanation:

first, third, and fourth options

Answer:

1,3,4

Step-by-step explanation:

e2020

Answer:

It was a 18.5% Tip

If bill for a meal was $33.75. The customer left $40.00. then 15.625 % is the percentage of the bill was the tip

percentage, a relative value indicating hundredth parts of any quantity.

Given,

The bill for a meal was $33.75.

The customer left $40.00.

We need to find the percentage of tip left on the bill.

40-33.75

6.25

Now we need to find 6.25 is what percentage of 40

40x=6.25

x=6.25/40

x=0.15625

Now multiply with 100

0.156×100=15.625

Hence, 15.625 is the percentage of the bill was the tip.

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Answer:

B(3,3)

Step-by-step explanation:

Midpoint = (2,5)

A = (x₁,y₁) = (1,7)

M(x,y) = [tex](\frac{x1+x2}{2} , \frac{y1+y2}{2})[/tex]

M(2,5) = [tex](\frac{1+x2}{2} , \frac{7+y2}{2} )[/tex]

Writing the equations separately for convenience

1) [tex]\frac{1+x2}{2} = 2[/tex]  

=> 1+x2 = 4

=> x₂ = 3

2) [tex]\frac{7+y2}{2} =5[/tex]

=> 7+y2 = 10

=> y₂ = 3

So, the coordinate is,

B = (x₂,y₂) = (3,3)

Answer:

(3,3)

please see the attached picture for full solution

hope it helps..

Good luck on your assignment

the correct answer is yes. 3/8 is the irrational.

step by step explaination: Assuming you meant, then it's irrational. The square root of any Natural Number which is not a perfect square is irrational. 8 is not a perfect square so is irrational.

I am glad to help you!!!!!!!!!!!!

Answer: $10988.25

Step-by-step explanation:

From the question, we are told that for the Black Panther trip 420 students were scheduled to go and 15% more students were selected. This means that the total number of students that are going will be:

= 420 + (15% × 420)

= 420 + (0.15 × 420)

= 420 + 63

= 483 students

Since each administration ticket cost 22.75 dollars. The total amount paid for all tickets purchased will be:

= 483 × $22.75

= $10988.25

Answer:

Brett can afford 5 books.

Step-by-step explanation:

each book is $4 and an additional charge of $2 for shipping.

4 + 2 = 6

6 x 5 = 30

brett will spend exactly $30

Answer:

Step-by-step explanation:

The shape described in question is a square overlaid with two quarter circles(a semi circle)

Area of the figure = Area of the square + area of the semi circle

Area of the figure = [tex]L^{2}+\frac{\pi r^{2} }{2}[/tex]

L = length of a side of the square = 12in

r is the radius of the semi circle = 6in

Area of the figure = [tex]12^{2} + \frac{36\pi }{2} }\\[/tex]

Area of the figure = [tex]144+18\pi[/tex] = 200.55in²

Since the shaded portion is a square;

percent of the total area is shaded = area of the square/total area * 100%

percent of the total area is shaded = 144/200.55* 100

percent of the total area is shaded= 71.8%

Answer:

Step-by-step explanation:

If 2 angles are complementary, that means that they add up to 90 degrees.

The angle complementary to a 30-degree angle has to measure 60 degrees. D is your choice.

Answer:

(C)Converting to a common denominator

Step-by-step explanation:

Given some of the steps in the derivation of the quadratic formula below:

[tex]\text{Step 3:} -c + \dfrac{b^2}{4a}=a(x^2+ \dfrac{b}{a}x+ \dfrac{b^2}{4a^2})\\\\\text{Step 4a:} -c + \dfrac{b^2}{4a}=a(x+\dfrac{b}{2a})^2\\\\\text{Step 4b:} \dfrac{-4ac}{4a}+ \dfrac{b^2}{4a}=a(x+\dfrac{b}{2a})^2[/tex]

Step 4b is derived from Step 4a by converting the left-hand side to a common denominator 4a.

Therefore, that which best explains or justifies Step 4b is:

(C)Converting to a common denominator

Answer:

C

Step-by-step explanation:

lol

Answer:

No, the triangles are not congruent.

Step-by-step explanation:

Triangle HOT has AAS, whilst triangle CLD has ASA. Therefore, the triangles are not congruent. There is also no way to prove that HOT and CLD are isoscles triangles, which means we cannot use ASA or AAS.

Answer:

As y = mx + c (standard form)

Thus relating the equation , we get

m = 1

c = -6

Answer:

m = 1

c = -6

Step-by-step explanation:

m is the gradient of the line.

c is the intercept of the line.

The formula for it is : y = mx+c

so m = 1

c = -6

Hope this helps

Answer:

3 minutes

Step-by-step explanation:

We can use ratios to solve

3 blocks           1 block

----------------- = --------------

9 minutes         x minutes

Using cross products

3 * x = 9*1

3x = 9

Divide each side by 3

3x/3 = 9/3

x = 3

So the right answer is 3.

please see the attached picture for full solution

Hope it helps

Good luck on your assignment