A block of ice weighs 12 tonne.
The block is a cube with side length 81cm.
Find the density of the ice.
Give your answer in kilograms per cubic metre.

Answer:

[tex]\sqrt{109}[/tex]

Step-by-step explanation:

using pythagorean theorem

height:3

length=10

a^2+b^2=c^2

a=height=3

b=length=10

9+100=c^2

c=[tex]\sqrt{109}[/tex]

Answer:

w = 7 inches

Step-by-step explanation:

length = n

width = n/2

Perimeter = 2n + 2(n/2)

42 = 2n + n

42 = 3n

n = 14

width = 14/2 = 7

Answer:

B

Step-by-step explanation:

35% off of $8.00 is equal to $5.20

✧brainliest appreciated✧

Answer:

For instance, there's the basic formula that the area of a triangle is half the base times the height. This formula only works, of course, when you know what the height of the triangle is. ... That is to say, the area of a triangle is half the product of two sides times the sine of the included angle.

Step-by-step explanation:

Answer:

6 onuces per serving

Step-by-step explanation:

Answer:

I believe the answer is A and D.

8/5 = 1 3/5

(5 x 1 = 5 + 3 = 8, to get 8/5)

13/12 = 1 1/12 (12 x 1 = 12 + 1 = 13, to get 13/12)

Hope this helped! :D

Answer:

it would be only one solution

Step-by-step explanation:

WHAT IS THAT ? THX

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Answer: -5 and 5

Step-by-step explanation:

-5 plus 5 added has a sum of 0

Answer:

last option is the answer

Step-by-step explanation:

the answer cannot be the two middle options because you can see the y-intercept is 2 so the equation must end with that

now you have to determine if the slope of the line is -5 or -1

you can find the slope by selecting two points on the line; for example, (0,2) and (1,1) and using formula:  difference of y-values       2 - 1  

                                              difference of x-values        0 - 1

the slope is -1

Answer:

We have the function:

f(x) = x^3 - 2*x^2

To sketch this, we need to graph some points, and then just draw a line that passes through the points.

The graph of this equation is shown below.

Now we can complete the question.

If the graph is below the x-axis in some interval, the function is negative in that interval

If the graph is above the x-axis in some interval, the function is positive in that interval.

If the graph goes up in a interval, then the function is increasing in that interval

If the graph goes down on an interval, then the function is decreasing in that interval.

Then:

1) f is------ on the intervals (−∞, 0) and (0, 2).

Here we can see that the graph is below the x-axis in those intervals, then here we have:

f is negative on the intervals (−∞, 0) and (0, 2).

2) f is------ on the interval (2,∞)

Here the answer is positive:

f is positive on the interval  (2,∞)

3) fi is ------ on the interval (0, 4/3)

In the graph, you can see that the graph goes down in that interval, then the correct answer here is:

f is decreasing on the interval (0, 4/3)

4) f is------ on the intervals (−∞, 0) and (4/3, ∞).

In this case, we can see that the graph goes up in these intervals, then the correct answer here is:

f is increasing on the intervals (−∞, 0) and (4/3, ∞).

Answer:

-16m-6

Step-by-step explanation:

use distributive property, you get -16m-6

I hope this helped, and if my answer was right, please mark this as brainliest! Thank you!

Hey there!

Hey there!

–2(8m + 3)

Distribute

–2(8m) + –2(3)

–2(8m) = –16m

–2(3) = —6

Answer: –16m – 6 ☑️

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

Answer:

Assuming T = ton:

1440000 ounces

Step-by-step explanation:

1 ton = 2000 pounds

1 pound = 16 ounces.

So 45 tons = 2000 * 16 * 45 ounces.

Answer:

D

Step-by-step explanation:

(6, 24)  this ordered pair has an x-value of 6 and a y-value of 24

The only equation, if you substitute those values into it, which works is D.

24 = 4(6)

24 = 24

Answer:2 3/ 8

Step-by-step explanation: 5 1/8 - 2 3/4

                                            = 41/ 8  - 11/4

                                          = 41/8 - 22/8

                                           =19/8

                                        =2 3/ 8

Change to improper fraction .Then make the denominator the same ,make both denominator to 8 . Now you have 41/8 and 22/8 ,you can subtract it and it gives you 19/8.Lastly you make the improper fraction to mixed  numbers which is 2 3/ 8 .

Step-by-step explanation:

A= 4(pi)r^2

A=4(3.14159265359)13^2

A=2123.72

**I dont know if it's right or wrong.**

Answer:

4^9

262144

Step-by-step explanation:

Answer:

10th number in the sequence is 786432

n = 4

Step-by-step explanation:

Multiply the following number by 4 (starting at #4) until you reach the 10th number in the sequence

Answer:

$8.75

Step-by-step explanation:

Set up a proportion where x is the cost of a bottle with 250 vitamins:

[tex]\frac{150}{5.25}[/tex] = [tex]\frac{250}{x}[/tex]

Cross multiply and solve for x

150x = 1312.5

x = 8.75

So, it will cost $8.75 for a bottle with 250 vitamins

a) The two points that should be used to find the equation are given as follows: (6,9) and (10,13).

b) The slope of the linear model is of 1.

c) The point-slope form of the linear model is given as follows: y - 9 = (x - 6).

d) The slope-intercept form of the equation you wrote in part (c) is given as follows: y = x + 3.

e) The least squares regression line is given as follows: y = 1.028x + 2.271.

The slope-intercept definition of a linear function is given as follows:

y = mx + b.

In which:

Two points from the line are defined as follows:

(6,9) and (10,13).

These points were chosen as they have the least residual, that is, these points are the closest to the line of best fit.

Given two points, the slope is calculated as the change in y divided by the change in x, hence:

m = (13 - 9)/(10 - 6) = 1.

Considering point (6,9), the point-slope equation is given as follows:

y - 9 = (x - 6).

Hence the slope-intercept definition of the linear function is given as follows:

y - 9 = x - 6

y = x + 3.

The points from the scatter plot are given as follows:

(1,2), (2,6), (5,6), (6,9), (7,11), (9,10), (10,13).

Inserting these points into a linear regression calculator, the regression line is given as follows:

y = 1.028x + 2.271.

More can be learned about linear functions at https://brainly.com/question/24808124

#SPJ1

Answer:

Yes

Step-by-step explanation:

If you multiply the 3 into the equation it will give you 3x+3 3/2 -3 and if you simplify it the answer is 3x+4 1/2 -3=3x +1 1/2.

3x+1 1/2 = 3x + 1 1/2

Answer:

5 pounds of potatoes is $3.75 1 pound is .75 cents

Step-by-step explanation:

Answer:

A - 105

Step-by-step explanation:

since the two measurements are supplements, you do x+82+x+112=180. then you get x=-7. then you do 112-7=105

Answer:

105°

Step-by-step explanation:

A line equals 180, so take the two expressions and set them equal to 180:

x+82+x+112=180

simplify:

2x+194=180

2x=-14

x=-7

now plug the x value into the bolded expression

x+112

-7+112 = 105°

Answer:

The correct answer is,

[tex] \frac{7}{16} [/tex]

hope it helps.

have a great day.

Answer:

1 3/4 ÷ 4 = 7/16.

Step-by-step explanation:

Is your answer.

Answer:

3348 ft

Step-by-step explanation:

sin 21° = BC/AB = 1200/AB

AB = 1200 / sin 21° = 1200 / 0.358 =  3352 ≈ 3348

Question:

Alex skateboards at a constant speed from his house to school 3.8 miles away. It takes him 18 minutes.

a. What fraction represents his constant speed, c?

b. After school, Alex skateboards at the same constant speed to his friend’s house. It takes him 10 minutes.  Write the fraction that represents constant speed, c, if he travels a distance of y.

c. Write the fractions from parts(a) and (b) as a proportion, and solve to find out how many miles Alex’s  friend’s house is from school. Round your answer to the tenths place.

Answer:

(a) [tex]c = \frac{3.8}{18}[/tex]

(b) [tex]c = \frac{y}{10}[/tex]

(c) 2.1 miles

Step-by-step explanation:

Solving (a):

Given

[tex]Distance = 3.8\ miles[/tex]

[tex]Time = 18\ minutes[/tex]

Required

Determine the constant speed, c.

Speed is calculated as:

[tex]Speed = \frac{Distance}{Time}[/tex]

So, we have:

[tex]c = \frac{3.8}{18}[/tex]

Solving (b):

Given

[tex]Distance = y[/tex]

[tex]Time = 10\ minutes[/tex]

Required

Determine the constant speed, c.

Speed is calculated as:

[tex]Speed = \frac{Distance}{Time}[/tex]

So, we have:

[tex]c = \frac{y}{10}[/tex]

Solving (c): Write (a) and (b) as proportions and solve for y.

As a proportion, we have

[tex]\frac{y}{10} = \frac{3.8}{18}[/tex]

Multiply both sides by 10

[tex]10 * \frac{y}{10} = 10 * \frac{3.8}{18}[/tex]

[tex]y = 10 * \frac{3.8}{18}[/tex]

[tex]y = \frac{38}{18}[/tex]

[tex]y = 2.11111[/tex]

[tex]y = 2.1\ miles[/tex]  ---- approximated

Answer:

y=4/3x+7/3

Step-by-step explanation:

I don't know if this is right.

Answer:

TU = 8.4

Step-by-step explanation:

The geometric figure consists of the following segments;

1) 4 parallel lines, WS, YR, XQ, and, VP

2) Three transversals, VW, PS, and, TU

The given parameters are;

PQ = QR = RS

Therefore, given that the transversal, PS, makes equal intercept with the 4 given parallel lines, by equal intercept theorem, the transversal TU will make equal intercepts with the given parallel lines

Therefore;

TX = 2.8 = XZ = ZU

From which we have, by segment addition postulate;

TU = TX + XZ + ZU

∴ TU = 2.8 + 2.8 + 2.8 = 8.4

TU = 8.4.