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
Leya [2.2K]
3 years ago
5

Two solid spheres have surface areas of 1441 cm? and 2567 cm² respectively. They are melted and recast to form a larger sphere.

Find the surface area of the larger sphere in square centimetres.​
Mathematics
1 answer:
Tju [1.3M]3 years ago
7 0

Surface area of small sphere = 1441cm^2

Surface area of bigger sphere = 2567cm^2

Surface area of largest sphere = 1441 + 2567

= 4008cm²

Must click thanks and mark brainliest

You might be interested in
A batter strikes a baseball. the equation y = -0.005^2 +0.7x + 3.5 models its path, where x is the horizontal distance, in feet,
hram777 [196]

Answer:

(D)144.8 feet

Step-by-step explanation:

Given the equation which models the path of the baseball

y = -0.005x^2 +0.7x + 3.5

where x is the horizontal distance, in feet, the ball travels and y is the height, in feet, of the ball.

To determine how far from the batter the ball will land, we determine the distance x at which the height, y=0.

y = -0.005x^2 +0.7x + 3.5=0

-0.005x^2 +0.7x + 3.5=0

We use the quadratic formula to solve.

In the quadratic equation above, a=-0.005, b=0.7, c=3.5

x=\dfrac{-b\pm\sqrt{b^2-4ac} }{2a} \\=\dfrac{-0.7\pm\sqrt{0.7^2-4(-0.005*3.5)} }{2*-0.005} \\=\dfrac{-0.7\pm\sqrt{0.49+0.07} }{-0.01}\\=\dfrac{-0.7\pm\sqrt{0.56} }{-0.01}\\x=\dfrac{-0.7+\sqrt{0.56} }{-0.01} \: or\: x=\dfrac{-0.7-\sqrt{0.56} }{-0.01}\\x=-4.83 \: or\: x=144.83

Since x cannot be negative, x=144.8 feet to the nearest tenth of a foot.

<u>The correct option is D.</u>

6 0
3 years ago
8- 5 (a + b) + 3 (a - 2b)
Alexeev081 [22]

Answer: 8-2a-11b

.....

7 0
3 years ago
What is the perimeter of a semi-circle measuring 8cm
Margaret [11]
The perimeter of a circle is its total circumference, but in this case a semi-circle will measure half the circumference plus its diameter.
If the semicircle measures 8cm then the total circle is 16 cm, and we can calculate its diameter or radius from there. The perimeter is defined as:
p = pi*diameter = 16
diameter = 16/pi = 16/3.14
diameter = 5.1 cm
Therefore the semi-circle perimeter is:
perimeter = semi-circle + diameter = 8 + 5.1 = 13.1 cm
6 0
3 years ago
Can somebody help me please?
madreJ [45]
Factor
(x+7)(x-2)

Proof
7-2=5
7*-2=-14

Zeros
x+7=0
x=-7

x-2=0
x=2

Final answer: C

3 0
3 years ago
Read 2 more answers
Please help!!
DochEvi [55]

Answer:

grgrgrgrg

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • If ABCD is congruent to , pqrs, then &lt;C Is congruent to <br><br>A. P<br>B. Q<br>C. R<br>D. S
    15·2 answers
  • Write 5 1/6 in the form a/b, using integers to show rational numbers.
    6·1 answer
  • If y=7.5 when x=0.5, find y when x=-0.3
    9·1 answer
  • Does anyone know what's the answer for this question ???
    11·1 answer
  • A college has space for 580 students. The college estimates that 65% of the students who are admitted will attend the college. H
    10·1 answer
  • A total of 633 tickets were sold for the school play. They were either adult tickets or student tickets. There were 67 fewer stu
    7·1 answer
  • Please help asap! the 7th grade has 95 students... the rest is in the picture
    14·2 answers
  • A right triangle has an angle that measures 13.9 degrees. What is the missing angle measure?
    10·1 answer
  • How do you determine the function family from just a graph?
    5·2 answers
  • PLEASE HELP ME I GIVE BRAINLIEST
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!