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Tresset [83]
3 years ago
12

PLEASEE HELP ME!!!!!!!!!!!

Mathematics
1 answer:
zavuch27 [327]3 years ago
4 0

Answer:

26%

Step-by-step explanation:

13/50=0.26

0.26x100=26%

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I'll mark the best or the first as brainliest.
FinnZ [79.3K]

Answer:

<em><u>Here</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>error</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em>

<em><u>\pi {r}^{2}</u></em>

<em><u>It</u></em><em><u> </u></em><em><u>should</u></em><em><u> </u></em><em><u>have</u></em><em><u> </u></em><em><u>been</u></em><em><u> </u></em><em><u>,</u></em>

<em><u>2\pi {r}^{2}</u></em>

Step-by-step explanation:

<em><u>Corrected</u></em><em><u> </u></em><em><u>formula</u></em><em><u>:</u></em>

<em><u>2\pi  {r}^{2}  + 2\pi rh</u></em>

<em><u>= 2\pi ({5}^{2})  + 2\pi(5)(10.6)</u></em>

<em><u>= 50\pi + 106\pi</u></em>

<em><u>= 156\pi</u></em>

<em><u>= 489.84 {yd}^{2}</u></em>

<em><u>approx . \: 489.8 {yd}^{2} (ans)</u></em>

6 0
2 years ago
Smedley has two rolls of crepe paper, one with 30 yards and one with 40 yards. If he cuts both rolls into 5-yard streamers, how
Nastasia [14]

Answer:

He will have 14 streamers

6 0
2 years ago
Read 2 more answers
A block of ice has a square top and bottom and rectangular sides. At a certain point in
Lilit [14]

Answer:

\frac{dV}{dt} = 360 \ cm^3/h

General Formulas and Concepts:

<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

Equality Properties

<u>Geometry</u>

  • Volume of a Rectangular Prism: V = lwh

<u>Calculus</u>

Derivatives

Derivative Notation

Differentiating with respect to time

Basic Power Rule:

  • f(x) = cxⁿ
  • f’(x) = c·nxⁿ⁻¹

Step-by-step explanation:

<u>Step 1: Define</u>

<u />l = 30 \ cm\\w = l\\\frac{dl}{dt} = 2 \ cm/h\\h = 20 \ cm\\\frac{dh}{dt} = 3 \ cm/h<u />

<u />

<u>Step 2: Differentiate</u>

  1. Rewrite [VRP]:                                                                                                 V = l^2h
  2. Differentiate [Basic Power Rule]:                                                                         \frac{dV}{dt} = 2l\frac{dl}{dt} \frac{dh}{dt}

<u>Step 3: Solve for Rate</u>

  1. Substitute:                                                                                                           \frac{dV}{dt} = 2(30 \ cm)(2 \ cm/h)(3 \ cm/h)
  2. Multiply:                                                                                                               \frac{dV}{dt} = 360 \ cm^3/h

Here this tells us that our volume is decreasing (ice melting) at a rate of 360 cm³ per hour.

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3 years ago
My little brother asked for help and I don't even understand it. Can someone explain this for us?
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1. NIL
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Hope this helps!
6 0
2 years ago
Read 2 more answers
Q- y = 7 is a line which is-(A) Parallel to y-axis (B) Parallel to x-axis (C) Passing through (7, 7) (D) Passing through origin​
siniylev [52]

Answer:

(B) Parallel to x-axis

Step-by-step explanation:

y = 7

This is a constant line, in which the value of y is always of 7, no matter the value of x.

In a line in which the value of y is constant, this line is parallel to the x-axis, so the correct answer to this question is given by option b.

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2 years ago
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