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andrezito [222]
2 years ago
9

A sheet of glass has a density of

Mathematics
1 answer:
Alexxandr [17]2 years ago
7 0

Answer:

2500 kg/m³

Step-by-step explanation:

Density of a material is the ratio of mass and volume of that material.

The S.I unit for density is grams per centimeters cubed (g/cm³) or kilograms per meter cubed (kg/m³)

Given density as 2.5 g/cm³ , convert to kg/m³

Formula is;

1g/cm³ = 1000 kg/m³

2.5 g/cm³=? cross-multiply

=2.5×1000 = 2500 kg/m³

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Someone please help me I’m really struggling <br> I will give brainliest
viktelen [127]

Answer:

SA ≈ 1134 cm²

General Formulas and Concepts:

<u>Math</u>

  • Pi π = 3.14...

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Geometry</u>

  • Radius: r = d/2
  • Surface Area of a Sphere: SA = 4πr²

Step-by-step explanation:

<u>Step 1: Define</u>

d = 19 cm

<u>Step 2: Find </u><em><u>SA</u></em>

  1. Substitute [R]:                    r = 19 cm/2
  2. Divide:                                r = 9.5 cm
  3. Substitute [SAS]:               SA = 4π(9.5 cm)²
  4. Exponents:                        SA = 4π(90.25 cm²)
  5. Multiply:                             SA = 361π cm²
  6. Multiply:                             SA = 1134.11 cm²
  7. Round:                               SA ≈ 1134 cm²
8 0
3 years ago
If x^2 = 16(5), then x =
Bogdan [553]

Answer:

4\sqrt{5} or 8.944

Step-by-step explanation:

x^{2} = 16(5)

Simplify

x^{2} =80

Square root both sides to get x by itself

\sqrt{x^{2} } =\sqrt{80}

4\sqrt{5} or 8.944

6 0
3 years ago
The set of numbers in the form startfraction a over b endfraction a b​, where a and b are integers and bnot equals≠​0, is called
krek1111 [17]
Rational Number are set of numbers that can be written as a/b where a and b are integers, but b is not equal to 0; an integer or a fraction; for example: 6 can be expressed as 6/1 and 0.5 can be expressed as 1/2.
7 0
3 years ago
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Alejandro rounded the number 76.518 to 76.5. Jiro rounded the same number to 76.52. Who is correct? Explain your reasoning
sergeinik [125]
Alejandro is correct because you do not need to add another number to 76.518, as Jiro did, but you need to round it to the nearest tenth.

Glad I could help, and good luck!

4 0
3 years ago
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There are eight planets in our solar system. Mars is the fourth planet from the sun. What percentage of the planets in our solar
larisa [96]

Answer:

C 37.5%

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3/8 = .375

Changing to a percent

37.5% are closer to the sun than mars

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