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allsm [11]
3 years ago
11

Pls help!! I need the answer immediately

Mathematics
1 answer:
Strike441 [17]3 years ago
4 0

Answer:

i). x³ + 9x² + yz - 15

ii). -21m³np - 8p⁵q + mnp + 4mn + 100

Step-by-step explanation:

Question (38)

i). Two expressions are -5x² - 4yz + 15 and x³+ 4x²- 3yz

  By subtracting expression (1) from expression (2) we can the expression by addition which we can get expression (1).

 (x³+ 4x²- 3yz) - (-5x² - 4yz + 15) = x³ + 4x² - 3yz + 5x² + 4yz - 15

                                                    = x³ + 9x² + yz - 15

ii). -15m³np + 2p⁵q - 6m³pn + mnp + 4mn - 10qp⁵+ 100

  = (-15m³np - 6m³np) + (2p⁵q - 10qp⁵) + mnp + 4mn + 100

  = -21m³np - 8p⁵q + mnp + 4mn + 100

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The amount of​ carbon-14 present in a paint after t years is given by y equals y Subscript o Baseline e Superscript negative 0.0
Anni [7]

Answer:

16,383.33 years ( approx )

Step-by-step explanation:

Given equation that shows the amount of carbon-14 after t years,

y = y_0 e^{-0.00012t}

Where,

y_0 = initial amount,

∵ 14% of y_0 = \frac{14}{100}y_0 = \frac{7}{50}y_0

\frac{7}{50}y_0= y_0 e^{-0.00012t}

\frac{7}{50}=e^{-0.00012t}

Taking ln both sides,

\ln(\frac{7}{50})=-0.00012t

-1.966=-0.00012t

\implies t =\frac{-1.966}{-0.00012}=16383.33

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5 0
3 years ago
What is the volume of the pyramid shown?
Vilka [71]

Answer:

The answer to your question is 440 in³, this is my result I can not see the height in the picture I think the number is 40 in

Step-by-step explanation:

Data

length of a side = 6 in

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Volume of a square pyramid = ?

Process

1.- Calculate the area of the base

Ab = 6 x 6

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2.- Calculate the volume of the Pyramid

Volume of a square pyramid = 1/3 (36 x 40)

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                                                = 480 in³

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3 years ago
C 2/n=21<br> What is answer for it?
nekit [7.7K]

Answer:

Step-by-step explanation:

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1. The rapper charges a fee of $200 per party and $5 per song. Write an equation that
suter [353]

Answer:

$235

Step-by-step explanation:

X= per party A= per song

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ikadub [295]

Answer:

The expression Barak could use to find the amount he will spend to feed his pet lizards for one day = Number of pets × number of crickets per pet × cost of each crickets

Step-by-step explanation:

Pet lizards = 4

Each lizard eats 5 crickets

4 pet lizards will eat = 4 × 5 crickets

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A cricket = 12 cents

That is, $0.12

Cost of 20 crickets = 20 × $0.12

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The expression Barak could use to find the amount he will spend to feed his pet lizards for one day

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3 years ago
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