All categories

3 years ago

F(x)=2x^2+3 when x=3

Mathematics

1 answer:

Rudik [331]3 years ago

5 0

2x^2+3
x=3
2(3)^2+3
2(9)+3
18+3
21 is the answer.

You might be interested in

To cut a lawn, Allan charges a fee of $15 for his equipment and $8.50 per hour spent cutting a lawn. Taylor charges a fee of $12

777dan777 [17]

Answer:

Step-by-step explanation:

Let y be the total charge and x no of hours spent for cutting the lawn,

Then for Allan we have the equation as

y = 8.50x+15

SInce 15 is the fixed charge and 8.50 is charged per hour we get the above equation for Allan.

Next similarly for Taylor, we have fixed charges 12 and variale 9.25

y =9.25x+12

When Taylor total charges is greater than Allan's total charge

we have 9.25x+12>8.5x+15

Simplify to get

0.75x>3

Or x>4

Whenever x i.e. no of hours exceed 4, Taylor charges will be greater than that of Allan

5 0

3 years ago

The shower block on the campsite has an area of 144 m2 The length of the shower block is 24 m.What is the width?

g100num [7]

Since the shower block is in the form of a rectangle. The shower block has an area of 144 $m^{2}$ . It has a length of 24m. We need to calculate the width of the shower block.

Area of rectangular shower block = length $\times$ width

144 $m^{2}$ = 24 m $\times$ width

width = $= \frac{144m^{2}}{24m}$

width = 6m

So, the width of the shower block is 6 meters.

8 0

4 years ago

Use a half-angle identity to find the exact value of sinPi/8

stellarik [79]

Answer:

sin(π/8) = (1/2)√(2-√2)

Step-by-step explanation:

Using the half-angle formula ...

$\sin{\dfrac{\theta}{2}}=\sqrt{\dfrac{1-\cos{\theta}}{2}}$

We can let θ = π/4 and simplify the result as follows:

$\sin{\dfrac{\pi}{8}}=\sqrt{\dfrac{1-\cos{(\pi/4)}}{2}}=\sqrt{\dfrac{1-\dfrac{\sqrt{2}}{2}}{2}}=\sqrt{\dfrac{2-\sqrt{2}}{4}}\\\\=\boxed{\dfrac{1}{2}\sqrt{2-\sqrt{2}}}}$

5 0

3 years ago

Read 2 more answers

PLS ANSWER FAST I NEED IT ASAP find the coordinates of p so that p partitions segment ab in the part to whole ratio of 1 to 3 wi

Amanda [17]

Answer:

P(7, -7)

Step-by-step explanation:

Xp = 6+ ⅓(9-6)= 6+ ⅓(3)=6+1 =7

Yp = -10 + ⅓(-1+10)= -10+⅓(9)= -10+3=-7

=> P (7, -7)

5 0

3 years ago

The life span of a certain bacteria is 22 hours, with a standard deviation of 1.5 hours. In a random sampling of 5,000 bacteria,

kupik [55]

Answer:

hi!!!!!!!!!!

Step-by-step explanation:

hi!!!!!!!!!

4 0

4 years ago