1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
frozen [14]
3 years ago
9

85) A6-foot man casts an 8-foot shadow. How tall is a tree that casts a 20-foot shadow?

Mathematics
1 answer:
vichka [17]3 years ago
5 0

Answer:

15 foot

Step-by-step explanation:

6 foot = 8 foot shadow

3 foot= 4 foot shadow

15 foot=20 foot shadow

please give me brainliest!!!

You might be interested in
Three times one number added to five times another number is 54. The second number is two less than the first. Use a system of e
worty [1.4K]

Answer:

8 and 6

Step-by-step explanation:

If you use x for the first number, and y for the second, you get equations of 3x+5y=54 and x-2=y.

You can substitute the second equation into the first one to solve it. This gives 3x+5(x-2)=54.

The brackets can be expanded to 3x+5x-10=54. Collecting like terms makes it 8x-10=54.

Next, we add 10 to both sides. This gives 8x=64.

From there, we isolate the x by dividing both sides by 8, giving x=8.

To work out the second number, we can sub 8 for x in either equation (I'm using the second one as it's simpler).

This comes to y=8-2, therefore y=6.

**This content is simultaneous equations, which you may wish to revise. I'm always happy to help!

3 0
3 years ago
Find -3a2 - b3 + 3c2 - 2b3 if a = 2, b = -1, and c = 3
Studentka2010 [4]
If you would like to solve - 3 * a^2 - b^3 + 3 * c^2 - 2 * b^3, if a = 2, b = -1, c = 3, you can calculate this using the following steps:

a = 2, b = -1, c = 3
- 3 * a^2 - b^3 + 3 * c^2 - 2 * b^3 = - 3 * 2^2 - (-1)^3 + 3 * 3^2 - 2 * (-1)^3 = - 3 * 4 - (-1) + 3 * 9 - 2 * (-1) = - 12 + 1 + 27 + 2 = 18

The correct result would be 18.

6 0
3 years ago
Read 2 more answers
What is (6 + 3e)4 - 5e and 3(x - 5) + 7(x + 2) ?
Dafna11 [192]

idk lol use photomath

6 0
2 years ago
Weatherwise magazine is published in association with the American Meteorological Society. Volume 46, Number 6 has a rating syst
lisabon 2012 [21]

Answer:

a)  c) μ = 16.4.

b)  d) μ > 16.4.

c) a) μ < 16.4.

d) c) μ ≠ 16.4.

e)  d) right; left; both.

Step-by-step explanation:

Question a:

Test if it is getting worse, so at the alternative hypothesis we test if the mean is of greater than 16.4 inches, but at the null hypothesis we test if it is still of 16.4 options, so option C.

Question b:

At the alternative hypothesis we test if the mean is of greater than 16.4 inches, as said above, so the answer is given by option d.

Question c:

Dying down, so if the mean is lower than 16.4 inches, so option a.

Question d:

Don't know, so just test if it is different, which includes both lower or greater, so the correct answer is given by option c.

Question e:

Test if more -> right, so on question b) is a right tailed test.

Test if less -> left, so on question c) is a left tailed test.

Different -> both sides, so on question d) it is a two-tailed test.

Thus the correct answer is given by option d.

3 0
3 years ago
BRAINLIEST PLS HELP <br><br> Solve for x:<br><br><br><br> x = 10<br> x = 30<br> x = 0<br> x = 1
Vedmedyk [2.9K]

Answer:

x=0

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • A fruit company delivers its fruit in two types of boxes: large and small. A delivery of 2 large boxes and 5 small boxes has a t
    10·1 answer
  • Julia pays $4.56 to ship a package that weighs 9.5 ounces. What is the cost to ship 1 once?
    6·1 answer
  • 1. Flor does nails on the side. She plans to charge $ 20 a session. If each week 25 people are scheduled to get their
    8·1 answer
  • <img src="https://tex.z-dn.net/?f=If%20w%3D2x%2C%20then%20%5Cint%5Climits%5E2_0%20%7Bf%282x%29%7D%20%5C%2C%20dx%20%3D" id="TexFo
    6·1 answer
  • The sum of two mumbers is 66 and the difference is 10. What are the numbers?
    7·1 answer
  • Solve for x if a≠0, a≠3:<br> 3-a/x-a=1/a<br> (a picture will be provided as well)
    13·1 answer
  • Find the value of x.<br> A 2<br> B 4.8<br> C 6<br> D 6.4
    8·2 answers
  • 12v-38=⅛*(4v-3) I need this answered plz
    12·2 answers
  • The points (2, 8) and (1, 2) fall on a particular line. What is its equation in slope-intercept form?
    10·1 answer
  • Factorise 2xy-6td-4(xy-9td) please explain ​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!