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Goryan [66]
3 years ago
11

The function f(x) = 3.r4 + kx3 + x – 2 has an x-intercept at x = -2.

Mathematics
2 answers:
raketka [301]3 years ago
7 0
See the picture below

Veronika [31]3 years ago
7 0

Answer:

Choose (A)

Step-by-step explanation:

f(x)=3x⁴+kx³+x-2

f(x)=3(-2)⁴+k(-2)³+(-2)-2

=-8k+44

-8k=-44

k=44/8

k=11/2

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Which is the most economic way to lessen electric consumption?
AysviL [449]

Answer:

1) c. Use only appliances to do the most important task in the house.

2) b. 112kwh

3) b. 111kwh

Step-by-step explanation:

Energy can be defined as the ability (capacity) to do work and it's measured in Joules. The various forms of energy are solar energy, chemical energy, thermal energy, wind energy, nuclear energy, electrical energy, etc.

Power can be defined as the energy required to do work per unit time.

Mathematically, it is given by the formula;

Power = \frac {Energy}{time}

Energy consumption is the total amount of power used by an electronic device per unit time and it's measured in Watt-hour or Kilowatt-hour.

Mathematically, it is given by the formula;

Energy = power * time

Generally, the most economic way to lessen electric consumption is by ensuring only the important electrical appliances are used at all times.

2. Given the following data;

Previous reading = 2156 KWh

Present reading = 2268 KWh

To find how many kilowatt-hour was consumed;

Energy consumption = present reading - previous reading

Energy consumption = 2268 - 2156

<em>Energy consumption = 112 KWh</em>

3. Given the following data;

Previous reading = 5512 KWh

Present reading = 5623 KWh

To find the electrical consumption of Falogme Family;

Electrical consumption = present reading - previous reading

Electrical consumption = 5623 - 5512

<em>Electrical consumption = 111 KWh</em>

6 0
3 years ago
Write a rule to describe the transformation. A. Rotation 90º clockwise about the origin B. Rotation 180º about the origin C. Rot
Alex_Xolod [135]

Answer:

A. Rotation 90º clockwise about the origin B. Rotation 180º about the origin C. Rotation 90º counterclockwise about the origin D. Reflection across y=x

Step-by-step explanation:

because

4 0
4 years ago
Read 2 more answers
The butter distributor charges $4.50 per pound, but there is a handling fee of $8.50 per order. Free shipping for orders between
kykrilka [37]

Answer:

14.00

Step-by-step explanation:

add

subtract

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multiple

4 0
3 years ago
What is the fully factored form of the expression 45x²y2 + 18x3
musickatia [10]
Assuming you meant 45x^2y^2+18*3 , it should be 9(5x^2y^2+6)
6 0
2 years ago
Three times as many children as adults attended a concert on Saturday. An adult ticket cost $7 and a child’s ticket cost $3. The
Ierofanga [76]

For this case we propose a system of equations:

x: Let the variable representing the number of children in the concert

y: Let the variable representing the number of adults at the concert

According to the assistance we have:

x = 3y

According to the cost we have:

3x + 7y = 6000

Substituting the first in the second equation we have:

3 (3y) + 7y = 6000\\9y + 7y = 6000\\16y = 6000\\y = \frac {6000} {16}\\y = 375

Thus, the concert was 375 adults.

On the other hand we have:

x = 3 (375) = 1125

Thus, the concert was 1125 children.

In total they were:

375 + 1125 = 1500 people

ANswer:

The concert was 1500 people

3 0
3 years ago
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