All categories

3 years ago

Evaluate 3a2 + 4b2 for a = 2 and b = 3

1 answer:

8 0

The correct expression is
3a^2 + 4b^2
for a = 2 and b = 3
 3*(2)^2 + 4*(3)^2=48
The answer in this case is 48

You might be interested in

Jenny works in a picture framing shop. She has a function f(x) equals X +2 that find the size of a square frame, given a picture

Iteru [2.4K]

Given:

The function for size of a square frame is

$f(x)=x+2$

where, x is the side length of the picture.

The function for the price in dollars for the frame is

$p(x)=3x$

To find:

The single function for the price of a picture with an edge length of x.

Solution:

We know that, for a picture with an edge length of x.

Size of a square frame = f(x)

Price in dollars for the frame = p(x)

Single function for the price of a picture with an edge length of x is

$(p\circ f)(x)=p(f(x))$

$(p\circ f)(x)=p(x+2)$ $[\because f(x)=x+2]$

$(p\circ f)(x)=3(x+2)$ $[\because p(x)=3x]$

Let the name of this function is c(x). So,

$c(x)=3(x+2)$

Therefore, the required function is $c(x)=3(x+2)$ .

8 0

2 years ago

What number must you add to complete the square x2 + 12x = -3

Serga [27]

What number must you add to complete the square x^2 + 12x = -3?

Make sure to always check your answers, by the way!

The answer is: (x + 6)² - 33

Hope I helped!

Let me know if you need anything else!

~ Zoe

6 0

2 years ago

Read 2 more answers

Regroup hundreds as Tens: 8 hundreds 9 tens =

Lilit [14]

89 tens because 8 x10 is 80 add the 9
89

7 0

3 years ago

Help me with this please I will give you Brainliest

oksian1 [2.3K]

Answer

h = 8.12 cm

Explanation

Area of a parallelogram = b • h

We know the area is 20.3 cm^2 and that the base is 2.5cm.

Therefore 20.3 cm^2 = 2.5h

20.3/2.5 = 8.12 cm

h = 8.12 cm

3 0

2 years ago

1 On a trip, a family drove 270 kilometers in 3 hours. a Find how many kilometers were traveled in one hour. Express this as a r

wolverine [178]

90 kilometers per hour
270/3=90

7 0

1 year ago

Read 2 more answers