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
svet-max [94.6K]
3 years ago
6

Help for brainliest plz

Mathematics
2 answers:
wlad13 [49]3 years ago
8 0
What the guy said above is right he is smart
liberstina [14]3 years ago
5 0

Answer:

1. 523 cm^3

2. 1.6 ft

Step-by-step explanation:

1. Formula for volume of a sphere is (4/3)(pi)(r^3)

r = 5

(4/3)(3.14)(5^3) ≈ 523

2. Formula for volume of a cone is (1/3)(pi)(r^2)(h)

(1/3)(3.14)(1^2)(2) ≈ 2.0933

Plug this into the formula for volume of a sphere and find r.

2.093 = (4/3)(3.14)(r^3)

r ≈ 0.7937

Multiply by 2 to get the diameter, which is the height of the spherical barrier.

r * 2 ≈ 1.6

You might be interested in
Give the proportion a/b = c/d<br> Solve for c
dybincka [34]

Answer:

the answer is c = (ad)/b

Step-by-step explanation:

See the picture

5 0
3 years ago
Calculate the area of a circle whose diameter is 7cm.​
Tema [17]

Answer:

49π (or ~154) cm²

Step-by-step explanation:

A = area

A = πr²

r = radius

r = 7

A = π(7)²

= 49π

= 153.938040026 → 154 cm²

4 0
2 years ago
Alyssa took a math test for 20 questions and she answered 16 questions correctly in order to get an a she needs to answer at lea
Elenna [48]

Answer:

She did not qualify the exam.

Step-by-step explanation:

Given data

Total no of question in a test = 20

No. of question answered correctly = 16

Percentage of question answered correctly

(\frac{16}{20}) 100 = 80

But in order to get in the exam the student must have to score at least 90 %. But she got only 80 % so she did not qualify the exam.

6 0
3 years ago
The vertices of triangle rst are r(–1,–2), s(2,–1), and t(4,2). If δjkl ∼ δrst and the length of kl is units , what is the lengt
NemiM [27]

Answer:

3.16 units

Step-by-step explanation:

It has been given that the triangles JKL and the triangle RST are congruent.

That implies that, the length of the side JK, KL, and JL is equivalent to the length of the sides RS, ST, and RT respectively.

Now, to find the length of JK we need to find the length of the side RS. The coordinates of the points R and S are (-1,-2) and (2,-1).

The length of the side RS is equal to the distance between point R and S.

RS =\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

= \sqrt{(2-(-1))^2+(-1-(-(-2))^2}

=\sqrt{3^2+(-1+2)^2}

=\sqrt{9+1}=\sqrt{10}=3.16

Now that we have the length of the side RS, and the triangles JKL and RST are congruent therefore, the length of the side JK is 3.16 units.

7 0
3 years ago
Read 2 more answers
What is the sum of £4(0.5) "1?<br> n=1<br> O S=1.5<br> OS = 2<br> O S = 4.5<br> O S= 8
Lelu [443]
B. 2 …………………………,.,,,,,.,.,.,.,.,,,.,
3 0
3 years ago
Other questions:
  • How are different ideas about geometry connected?
    7·1 answer
  • Jeremy walked 6/8 of the way to school and ran the rest of the way. What fraction in simplest form shows the part of the way tha
    9·2 answers
  • Suppose 1 Bamboo Skewer Is About 30 Cm Long. How Many Skewers Would It Take To Make A Line 1 Million Centimeters Long?
    14·2 answers
  • Could anybody give me some help? I'm a little confused .-. &lt;3
    11·1 answer
  • Plz help ill give u brainlist
    15·1 answer
  • F(x)=2x^2-x+1 find the vertex
    13·1 answer
  • ILL MARK U BRAINLIEST
    10·2 answers
  • Using the pencil, plot the point (-1,-5).
    7·1 answer
  • How do you know if a function is quadratic??
    15·2 answers
  • To solve this system of equations using substitution, what could be substituted in place of y in the first equation? 4x = 5 − 2y
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!