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3 years ago

Pls answer this is a khan academy question

Mathematics

1 answer:

inysia [295]3 years ago

7 0

Answer:

Oak tree - linear
Birch tree - exponential

Step-by-step explanation:

The first table represents a linear function

For each 3 years, the rise of branches is ~12

The second table represents an exponential function

For each years time, the branches increase ~4 times

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Fine the area if the figure.(Sides meet at the right angles)

Liula [17]

Answer:

45 cm²

Step-by-step explanation:

6 0

2 years ago

Help! Thank you so much!!

AveGali [126]

Your final answer is -8

5 0

3 years ago

A student has $1 bills and $5 bills in his wallet. He had a total of 15 bills that are worth $47. How many of each type does he

Mrrafil [7]

Total number of $1 bills=7

Total number of $5 bills=8

Further explanation:

Given

Let x be the number of $1 bills

and

y be the number of $5 bills

Then according to the given statements

x+y=15

x+5y=47

From first equation:

$x+y=15\\x=15-y$

Putting x=15-y in second equation

$x+5y=47\\15-y+5y=47\\4y=47-15\\4y=32\\\frac{4y}{4}=\frac{32}{4}\\y=8$

Putting y=8 in first equation

$x+8=15\\x=15-8\\x=7$

Hence,

Total number of $1 bills=7

Total number of $5 bills=8

Keywords: Linear equations, Substitution method

Learn more about linear equations at:

brainly.com/question/2367554

brainly.com/question/2977815

#LearnwithBrainly

4 0

3 years ago

What is the result when 16x + 9 is subtracted from 4x + 6

romanna [79]

Answer:

(4x+9)-(16x+9) = 4x+9-16x-9

= -12x

6 0

2 years ago

2^n-5×5^n-4=5

Papessa [141]

$\huge{\fbox{\sf{n=5 }}}$

Step 1:

$⇒ {2}^{n - 5} \times {5}^{n - 4} = 5$

Step 2:

$⇒{2}^{n - 5} \times {5}^{n - 4} = {5}^{1} \times {2}^{0}$

On comparing values we get:

Taking:

${2}^{n - 5} = {2}^{0}$

n-5=0

n=5✓

Taking:

${5}^{n - 4} = {5}^{1}$

n-4=1

n=5✓

3 0

3 years ago