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Gennadij [26K]
3 years ago
12

Which expression is equivalent to 5(9 + 7). I will mark brainliest if you answer. DatGuy323 I like You! Answer please

Mathematics
1 answer:
Virty [35]3 years ago
4 0

Answer: 80

Step-by-step explanation:

5(9+7)\\\\Parenthesis\\\\5(16)\\\\Multiply\\\\80

Hope it helps <3

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Solve the quadratic equation.
kondaur [170]
The answer is C. Use the quadratic formula to solve it and you should be just fine!
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3 years ago
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F(x) = 49 − x2 from x = 1 to x = 7; 4 subintervals
Setler [38]

Answe

Given,

f(x) = 49 − x² from x = 1 to x = 7

n = 4

\Delta x = \dfrac{7-1}{4}= 1.5

For x= 1

f(x₀) = 49 - 1^2 = 48

x = 2.5

f(x₁) = 42.75

x = 4

f(x₂) = 49 - 4^2 = 33

x = 5.5

f(x₃) = 49 - 5.5^2 = 18.75

x = 7

f(x₄) = 49 - 7^2 = 0

We have to evaluate the function on therigh hand point

A = \Delta x [f(x_1)+f(x_2)+f(x_3)+f(x_4)]

A = 1.5 [42.75+33+18.75+0]

A = 141.75

For Area for left hand sum

A = \Delta x [f(x_0)+f(x_1)+f(x_2)+f(x_3)]

A = 1.5 [48+42.75+33+18.75]

A =213.75

3 0
3 years ago
A piece of paper has a
Allisa [31]

Answer:

The volume of the resulting cylinder is 385 cm³

Step-by-step explanation:

The formula of the rule of a cylinder is V = π r² h, where

  • r is the radius of its base
  • h is the height of it

<em>When a rectangular paper folded to form a cylinder, then one of its dimension will be the circumference of the base and the other dimension will be the height of the resulted cylinder</em>

∵ ABCD is a rectangle

∵ It is folded where AB coincides with DC

∴ AB is the height of the resulted cylinder

∴ BC is the circumference of the base of the resulted cylinder

∵ AB = 10 cm

∴ h = 10 cm

∵ BC = 22 cm

∴ The circumfrence  of the base = 22 cm

∵ The circumference of a circle = 2 π r

→ Equate the rule by 22 to find r

∴ 2 π r = 22

∵ π = \frac{22}{7}

∴ 2 × \frac{22}{7} × r = 22

∴ \frac{44}{7} r = 22

→ Divide both sides by \frac{44}{7}

∴ r = 3.5 cm

→ Use the formula of the volume above to find the volume of the cylinder

∵ V = \frac{22}{7} × (3.5)² × (10)

∴ V = 385 cm³

∴ The volume of the resulted cylinder is 385 cm³

3 0
3 years ago
paula and ricardo are serving cupcakes at a school party. if they arrange the cupcakes in groups of 2,3,4,5 or 6, they always ha
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Find the smallest number that is divisible by 2, 3, 4, 5, 6 and add 1.
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2 = 2
3 = 3
4 = 2^2
5 = 5
6 = 2 * 3

LCM = product of common and not common prime factors with larger exponent.

LCM = 2^2 * 3 * 5 = 4 * 3 * 5 = 60

To always have a remainder of 1, you need of add 1 to 60.

The number is 61.

Check:
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61/3 = 20 remainder 1
61/4 = 15 remainder 1
61/5 = 12 remainder 1
61/6 = 10 remainder 1
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3 years ago
A rug has sides that are each 15 feet long. How much floor will the rug cover?
Kaylis [27]
60?

if i rug has 4 sides that are each 15 feet long,

so what i did was 15*4
3 0
3 years ago
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