1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lions [1.4K]
3 years ago
12

Find the value of the expression 4a^4 − 2b^2 + 40 when a = 2 and b = 7

Mathematics
2 answers:
Effectus [21]3 years ago
7 0

Answer:6

Step-by-step explanation:

4(2)^4 − 2(7)^2 + 40

4(16)-2(7)^2+40

64-2(49)+40

64-98+40

-34+40

6

Flura [38]3 years ago
4 0

Answer:

6

Step-by-step explanation:

4a^4 - 2b^2 + 40

Put a = 2 and b = 7

4(2)^4 - 2(7)^2 + 40

Solve the powers first.

4(16) - 2(49) + 40

Multiply.

64 - 98 + 40

Add and subtract.

= 6

You might be interested in
The function H =f(t) gives the temperature, HF, of an object t minutes after it is taken out of the refrigerator and left to sit
kirill [66]
Spread day leave man come on
3 0
3 years ago
What is the area of the largest rectangle with lower base on the x-axis and upper vertices on the curve y = 12 - x2? (4 points)
wolverine [178]

Answer: 16 square units

Step-by-step explanation:

let the vertex in quadrant I be (x,y)  

then the vertex in quadratnt II is (-x,y)  

base of the rectangle = 2x  

height of the rectangle = y  

Area = xy  

= x(12 - x²)  

= -x³ + 12x  

d(area)/dx = 3x² - 12 = 0 for a maximum of area  

3x² = 12  

x² = 4  

x = ±2  

y = 12-4 = 8

So, the largest area = 2 x 8 = 16 square units

7 0
3 years ago
Help please , true or false question
wlad13 [49]

Answer:

true

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
URGENT!!
slava [35]

Answer:

a. 3/5 liters per hour

b .06 hours

Step-by-step explanation:

Change 40 minutes to a fraction of an hour

40 minutes/ 60 minutes = 2/3 hour

It takes 1 2/3 hours to fill the container

Changing to an improper fraction

(3*1+2)/3 = 5/3 hours

We want liters per hour

1 liter per 5/3 hours

1 ÷ 5/3

Copy dot flip

1 * 3/5 = 3/5 liters per hour

Change 100 ml to liters

We know 1000 ml  = 1 lt

100 ml * 1 lt/1000 ml = .1 lt

So 100 ml = .1 lts

.1 lt * 3/5 lt per hour

Changing the fraction to a decimal

.1 lt * .6 lt per hour

.06 hours

4 0
3 years ago
Olivia bought some granola bars and spent at least $6.24. Write and solve an equality to find the number of granola bars she bou
marishachu [46]

Answer:

n ≥ 6.24/x

Step-by-step explanation:

Given that :

Amount spent is atleast $6.24

Let price spent = p

p ≥ $6.24

If cost of granola bar = x

The number of granola bars, n purchased will be :

n ≥ 6.24/x

Since cost of granola bar isn't given, we represent it as x.

6 0
3 years ago
Other questions:
  • Identify the correct way to the nearest 1/8 pound​
    5·1 answer
  • 6 divided by 7.6 times 44
    15·1 answer
  • Factor<br> 8m³-18m<br> im so confused
    8·1 answer
  • Use the counting principle to determine the number of elements in the sample space. Two digits are selected without replacement
    10·1 answer
  • Which statement correctly describes the number 62/495 and its equivalent decimal notation?
    5·1 answer
  • Someone please help me with this one question
    5·1 answer
  • The table shows ordered pairs of the function y=8-2x. What is the value of y when x = 8?
    7·1 answer
  • Plz help me out ...And pls don’t use my points and don’t say idk sry in the answer’s
    5·2 answers
  • Simplify the expression:<br><br> 2(3 + g) =
    11·1 answer
  • Somebody help me ASAP now
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!