HELP HAVING BAD DAY
Walking at a speed of 3 mph, Jack gets to school in 10 minutes and arrives to school right before the class starts. Today Jack needs to be at school 4 minutes earlier. How fast does Jack need to run this morning?

Answer:

56.52mm²

Step-by-step explanation:

Based on observation, sum of diameters of small circles = diameter of the big circle.

In question, diameter of big circle = 12 mm.

And radius of big circle = 12mm/2 = 6mm

Let the diameter of each small circle be '2a'. So, radius of each small = 2a/2 = a.

=> 2a + 2a = 12mm

=> 4a = 12mm

=> a = 3mm

=> radius of each small circle = 3mm

Area of big circle = πr²

= (3.14)(6mm)²

= 113.04 mm²

Area covered by 2 small circles is: 2 * area of 1 one circle.

=> 2 * π(3mm)² = 18π mm²

=> 56.52 mm²

Shaded area = total area - area of 2 circles = 113.04 - 56.52 mm² = 56.52 mm²

Answer:

B. Submarine travelled 50 ft.

A. Submarine is descending (toward bottom)

Answer:

-9

Step-by-step explanation:

Answer:

5/4

Step-by-step explanation

You first find the multiples of 15 and 12 and then see if they a common multiple. After finding the common multiple,3, divide 15 by 3 and do the same for 12, then you would have the answer which would be 5/4.

Answer:

3 miles per hour

Hi friend! Hope you find this response helpful! :)

0.66666667

Answer:

-10

Step-by-step explanation:

I hope this helps!

Answer:

-10

Step-by-step explanation:

To find the answer to -2 - 8, we have to remember that when you subtract numbers, they go towards the negatives. So, since it is -2 - 8, you basically just add together the numbers but keep the negative sign, so the answer would be:

-2 - 8 = -10

Hope this helps :)

Answer:

-25

Any number times a negative number is like subtracting that number multiple times, similar to division.

↓ Here is the equation but factored ↓

[tex]5(x)\\5(-5)\\5 x -5\\-25xy[/tex]

xy is simply the term used in factoring when a number is combined with its factor in algebra to recreate the value of the starting equation.

Answer:

Step-by-step explanation:

1) Three points are not in the same plane if and only if exactly one line passes through them.

It is biconditional and false because more than one plane can pass through three points

2)Exactly one line passes through three points if the points are in an infinite number of planes.

It is biconditional and true because three points on same line will be in more than one plane and if they are not in the same plane then connect them and it will form a triangle which is in only one plane

3). an infinite number of planes pass through the same three points if and only if the points are not on the same line.

It is biconditional and false because more than one plane passes through them So, infinite no. of planes passes through them

4). three points on the same line if and only if exactly one plane passes through them. ​

It is biconditional and false because more than one plane passes through them So, infinite no. of planes passes through them

Answer:

x2+y2-x

Step-by-step explanation:

subtract like terms.

The required equivalent expression is [tex]x^2+y^2-x[/tex].

Important information:

The given expression can be written as:

[tex]3x^2+2y^2-3x-2x^2-y^2+2x[/tex]

Combining like terms, we get

[tex](3x^2-2x^2)+(2y^2-y^2)+(-3x+2x)[/tex]

On simplification, we get

[tex]x^2+y^2-x[/tex]

Therefore, the required equivalent expression is [tex]x^2+y^2-x[/tex].

Find out more about 'Equivalent expression' here:

https://brainly.com/question/12405477

Answer:

Tanong mo kay mama mo

Step-by-step explanation:

Kase mag aral ka ng mabuti wag puro brainly

Check the picture below.

Answer:

Anna  9 and Betty 15

Step-by-step explanation:

sum the parts of the ratio , 3 + 5 = 8 parts

divide number of sweets by 8 to find value of one part of the ratio

24 ÷ 8 = 3 ← value of 1 part of the ratio , then

3 parts = 3 × 3 = 9

5 parts = 5 × 3 = 15

Anna gets 9 sweets and Betty gets 15

Solution:

We know that:

Given:

Substitute the values into the expression to find the perimeter.

Answer: 28cm

Step-by-step explanation:

The perimeter formula for a rectangle = 2(l + w); where:

length = 9cm

width = 5cm

P = 2(l + w)

= 2(9 + 5)

= 18 + 10

= 28cm

Therefore, the perimeter of the cheese is 28cm

Answer:

slope is 3/2

Step-by-step explanation:

point A (20,10),  point B (40,40)

slope= [tex]\frac{(y2-y1)}{(x2-x1)}=\frac{40-10}{40-20}=\frac{30}{20} =\frac{3}{2}[/tex]

Answer:

22 83/100

Step-by-step explanation:

22 is a whole number, while .8333 is continues you have to round it to .83. .83 is in the hundredths place so it would be 83/110. So in the end you'll have 22 83/100

Answer: I’m assuming this is supposed to repeat because that’s ridiculous if it isn’t. The answer is 22 5/6

Answer:

a

Step-by-step explanation:

Answer:

[tex]m = \frac{-1}{6}[/tex]

Step-by-step explanation:

You are solving for the slope (m). Use the following equation:

slope (m) = [tex]\frac{y_2 - y_1}{x_2 - x_1}[/tex]

Let:

[tex](x_1 , y_1) =(-2 , 1)\\(x_2 , y_2) = (4 , 0)[/tex]

Plug in the corresponding numbers to the corresponding terms:

m = [tex]\frac{0 - 1}{4 - (-2)}[/tex]

[tex]m = \frac{-1}{4 + 2} \\m = \frac{-1}{6}[/tex]

[tex]m = \frac{-1}{6}[/tex] is your answer.

~

Answer:

Simplifying

Y = 2x + -1

Reorder the terms:

Y = -1 + 2x

Solving

Y = -1 + 2x

Solving for variable 'Y'.

Move all terms containing Y to the left, all other terms to the right.

Step-by-step explanation:

Answer:

r = 0.84

Step-by-step explanation:

The mean reading time obtained with the stopwatch measurements was 4.34 ± 0.57 seconds (196.21 ± 21.79 wpm), versus 4.44 ± 0.59 seconds (192.24 ± 22.20 wpm) by computer measurement (r = 0.84).

Answer:

I think the answer is -0.05

Step-by-step explanation:

Answer:

I solved it and my answer is number 1

Answer:

9

Step-by-step explanation:

81= 1,3,9,27,81

72= 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36,72

9 is the most common so GCF will be 9.

Answer:

See below.

Step-by-step explanation:

81 - 1,3,9,27,81

72 - 1,2,3,4,6,8,9,12,18,24,36,72

The GCF is 9.

-hope it helps

Answer:

$1.80

Step-by-step explanation:

9x0.2=1.80

He should leave 1.80 as a tip.

Answer: 4

Step-by-step explanation:

Follow the PEMDAS so the first thing you do is 14:7 which is 2. then you do the division and multiplication so the 44:11 is 4, 5*2 is 10, and 2*2 is 4. The next thing you do is addition and subtraction. 26-4-4-10-4 is 4. So, the answer is 4.

Answer:

ask your teacher for help , maybe youll find the answer quickly

Step-by-step explanation:

For the given similar polygons, the value of x equal to 30.

Two polygons are classified as similar when their angles are congruent and their sides are proportional.

If the polygons of this exercise are similar. You can write:

                                   [tex]\frac{LK}{QR}=\frac{JK}{PR}=\frac{JL}{PQ}[/tex]

Then,

                                    [tex]\frac{LK}{QR}=\frac{JK}{PR}=\frac{JL}{PQ}\\ \\ \frac{18}{12}=\frac{x}{20}=\frac{21}{14}[/tex]

It is possible to note that the scale factor is  [tex]\frac{3}{2}[/tex].  See it.

                                         [tex]\frac{18:6}{12:6}=\frac{3}{2} \\ \\ \frac{21:7}{14:7}=\frac{3}{2}[/tex]

Therefore, you can find x from:

                                      [tex]\frac{18}{12}=\frac{x}{20}\\ \\ 12x=18*20\\ \\ 12x=360\\ \\ x=\frac{360}{12} =30[/tex]

Read more about the similar polygons here:

https://brainly.com/question/1442292

Answer:

[tex]a. (4x + 2) + (-7x + 4) \\ c. -3(x - 2) \\ d. 1/2(-6x + 12) \\ \: are \: the \: once \: that \\ apply[/tex]

Answer:

[tex](0,3)[/tex]

Step-by-step explanation:

[tex]\begin{bmatrix}-\frac{1}{5}\left(15-5y\right)+y=3\end{bmatrix}[/tex]

[tex]\begin{bmatrix}-3+2y=3\end{bmatrix}[/tex]

[tex]+3[/tex]             [tex]+3[/tex]

[tex]2y\f=6[/tex]

÷[tex]2[/tex]     ÷[tex]2[/tex]

[tex]y=3[/tex]

[tex]\mathrm{for\:}x=15-5y[/tex]  [tex]\mathrm{substitute\:}y=3[/tex]

[tex]x=15-5\cdot \:3[/tex]

[tex]5*3=15[/tex]

[tex]15-15=0[/tex]

[tex](x,y)[/tex]

[tex](0,3)[/tex]

Answer:

- 15 and -10

Step-by-step explanation:

Answer:

the answers are b=-15

b=-10