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
Oxana [17]
3 years ago
9

Evaluate 2b² - 3b + 4a² for a= -6 and b=8

Mathematics
1 answer:
eduard3 years ago
7 0

Answer:

Step-by-step explanation:

2b^2 - 3b + 4a^2........a =-6 and b = 8

now we sub

2(8^2) - 3(8) + 4(-6^2)

2(64) - 24 + 4(36)

128 - 24 + 144

272 - 24

248 <==

You might be interested in
If d(x) = x2 - 7x - 7, find d(x - 1).​
satela [25.4K]

Answer: x^2-9x+1

Step-by-step explanation:

x^2-7x-7 d(x-1)

(you would just replace x to (x-1)

(x-1)^2-7(x-1)-7

(solve by square rooting (x-1)(x-1) then foil)

x^2-9x+1

7 0
3 years ago
If f(x) = |x| + 9 and g(x) = –6, which describes the value of (f + g)(x)?
bazaltina [42]

(f+g)(x) = f(x) + g(x) = (|x| + 9 ) + (-6) =

|x| + 9 - 6 = |x| + 3

Answer is |x| + 3

7 0
3 years ago
Problema de capacidades Una empresa aceitera ha envasado 3000 litros de aceite en 1200 botellas de dos y de cinco litros. ¿Cuánt
mariarad [96]

Answer:

Hay 200 botellas de 5 litros y 1000 botellas de 2 litros.

Step-by-step explanation:

Un sistema de ecuaciones lineales es un conjunto de dos o más ecuaciones de primer grado, en el cual se relacionan dos o más incógnitas.

Resolver un sistema de ecuaciones consiste en encontrar el valor de cada incógnita para que se cumplan todas las ecuaciones del sistema.

En este caso, las variables a calcular son:

  • x= cantidad de botellas de 2 litros.
  • y= cantidad de botellas de 5 litros.

Una empresa aceitera ha envasado 3000 litros de aceite en 1200 botellas de dos y de cinco litros. Entonces es posible plantear el siguiente sistema de ecuaciones:

\left \{ {{2*x+5*y=3000} \atop {x+y=1200}} \right.

Existen varios métodos para resolver un sistema de ecuaciones. Resolviendo por el método de sustitución, que consiste en despejar o aislar una de las incógnitas y sustituir su expresión en la otra ecuación, despejas x de la segunda ecuación:

x= 1200 - y

Sustituyendo la expresión en la primer ecuación:

2*(1200 - y) + 5*y=3000

Resolviendo se obtiene:

2*1200 - 2*y + 5*y= 3000

2400 +3*y= 3000

3*y= 3000 - 2400

3*y= 600

y= 600÷3

y= 200

Reemplazando en la expresión x= 1200 - y:

x= 1200 - y

x=1200 -200

x= 1000

<u><em>Hay 200 botellas de 5 litros y 1000 botellas de 2 litros.</em></u>

7 0
2 years ago
70.2 x 10<br> 6.702 x 10?<br> 7.02 x 100<br> 7.02 x 10?
Orlov [11]

Answer:

70.2 x 10=702.

6.702 x 10=67.02

7.02 x 100=70.2

7.02 x 10=70.2

Step-by-step explanation:

I hope this help! :)

3 0
3 years ago
Read 2 more answers
Find the product of 3 and the linear equation, and solve for both equations for y.
krok68 [10]

Answer:

Part 1) The product of 3 and 2y-4x=8 is 6y-12x=24

Part 2) The original equation in slope intercept form is y=2x+4

Part 3) The new equation in slope intercept form is y=2x+4

Step-by-step explanation:

we have

2y-4x=8

step 1

Find out the product of 3 and 2y-4x=8

Multiply both sides by 3

3(2y-4x)=3(8)

Apply distributive property both sides

6y-12x=24

step 2

Find out the original equation in slope intercept form

The equation of the line in slope intercept form is

y=mx+b

we have

2y-4x=8

Solve for y

That means ----> Isolate the variable y

Adds 4x both sides

2y=4x+8

Divide by 2 both sides

y=(4x+8)/2

Simplify

y=2x+4

step 3

Find out the new equation in slope intercept form

The equation of the line in slope intercept form is

y=mx+b

we have

6y-12x=24

Solve for y

That means ----> Isolate the variable y

Adds 12x both sides

6y=12x+24

Divide by 6 both sides

y=(12x+24)/6

Simplify

y=2x+4

8 0
3 years ago
Other questions:
  • Question 1 (short fill-in)
    7·2 answers
  • Find the solution to the equation:
    13·1 answer
  • I need help please quick. Is 69 is answer?
    7·2 answers
  • Can someone help write a rule for 3+4?
    10·1 answer
  • Solve 3x + 2 &lt; -4 solve inequalities
    8·1 answer
  • Compare the table and equation. x y 1 3 2 6 3 9 Equation: y = 4x Which representation has the greatest slope?
    10·1 answer
  • I forgot about everything last year
    15·1 answer
  • 27 divided by N has a remainder of 3.<br> How many different positive integers could n be?
    15·2 answers
  • One reading at an Arctic research station showed that the temperature was -35 ^C. What is this temperature in degrees Fahrenheit
    5·1 answer
  • X – 3 = 7 so X = thank
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!