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3 years ago

Find f(5) for f(x)= 1/9(3)^x A. 27 B. 3 C. 9 D. 81

Mathematics

1 answer:

zhuklara [117]3 years ago

7 0

Answer:

A 27

Step-by-step explanation:

f(5) means x = 5, so substitute 5 into 1/9(3)^x

f(5) = 1/9(3^5) = 1/9(243) = 27

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Khalid carried water bottles to the field to share with his team at halftime. The water bottles weighed

jeka57 [31]

Answer:

Answer: D

${50x}^{2} + 30x + 10$

• first factorise out 10:

$= 10(5 {x}^{2} + 3x + 1)$

• then find factors of the quadratic equation in the bracket:

4 0

3 years ago

1/5x-2/3y=30 when y=15

dolphi86 [110]

Answer:

Step-by-step explanation:

Step 1: Set y to 15 and solve

$\frac{1}{5}x - \frac{2}{3}*15=30$

$\frac{1}{5}x-10=30$

Add 10 to both sides

$\frac{1}{5}x-10+10=30+10$

$\frac{1}{5}x=40$

Multiply both sides by 5

$\frac{1}{5}x*\frac{5}{1}=40*\frac{5}{1}$

$x=200$

Answer: $x=200$

5 0

3 years ago

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azamat

2. (D)
3. (B) Hope it helps

3 0

3 years ago

Read 2 more answers

Simon drove through some roadworks where the speed limit was 50 mph. Two cameras recorded the time taken to travel 1200 m throug

Tom [10]

Answer:

$Speed = 21.43m/s$

Step-by-step explanation:

Given

$Distance = 1200m$ -- of the roadworks

$Time\ Recorded = 56s$

Required

Determine the speed

In this case:

$Speed = \frac{Distance\ of\ Roadword}{Time\ Captured}$

$Speed = \frac{1200m}{56s}$

$Speed = 21.43m/s$ --- approximated

3 0

3 years ago

K^2+5k-6=0 quadratic formula

s2008m [1.1K]

I hope this helps you

1.k^2+5k-6=0

a=1

b=5

c= -6

disctirminant =b^2-4ac

disctirminant =5^2-4.1. (-6)

disctirminant =49

x1= -(5)+ square root of 49/2.1

x1=-5+7/2

x1=1

x2= -5- square root of 49/2.1

x2= -5-7/2

x2= -6

7 0

3 years ago