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3 years ago

Expand and simplify: (x+2)(x+2)

1 answer:

7 0

Use foil which is a lazy way to remember theh distributive property
goes like this
multiply
First terms
Outer terms
Inner terms
Last terms
and add them all toegethe

so
(x+2)(x+2)
First: x times x or x²
Outer: x times 2 or 2x
Inner: 2 times x or 2x
Last: 2 times 2 or 4

add them toegether
x²+2x+2x+4=
x²+4x+4

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James estimated the total cost of groceries to be $50. The actual cost of the groceries is $65. What is the percent error? Round

Yuki888 [10]

The percentage error is 23%

Explanation:

The estimated total cost of the groceries = $50

The actual cost of the groceries = $65

To find the error value, we need to subtract the value of actual cost and total cost of the groceries.

Thus,

error value = actual cost - total cost

error value $= 65-50=15$

Hence, error value = $15

The formula to determine the percent error is given by

$Percent error $=\left(\frac{\text { error value}}{\text {actual value}}\right) \times 100$$

Substituting the values in the formula, we get,

$\begin{aligned} \text { Percent error } &=\left(\frac{15}{65}\right) \times 100 \\ &=0.231 \times 100 \\ &=23.1 \end{aligned}$

Rounding off the value, we have, 23%

Thus, the percentage error is 23%

6 0

3 years ago

Mr. Lau drove for 4 hours at a constant speed of r miles per hour.

Ivanshal [37]

Answer:

54 m/h

Step-by-step explanation:

216 ÷ 4

it is simple maths my dude

6 0

3 years ago

The slope of the graph is equal to

igomit [66]

There is no graph please provide a graph or equation

7 0

3 years ago

U will be made brainiest if this answer is right

Daniel [21]

Answer:

x= -7

Step by Step Explanation:

We can write them both like functions like this

A= 5x- 4

B= 3x+ 8

The output of A will be three times the output of B

A=3b

We replace with the functions

5x-4= 3

We solve for x

5x= -4= 9x + 24

5x- 9x= 24 + 4

-4x= 28

x= 28 - 4

x= -7

The output that makes the out put of A 3 times the output of B is -7

Hope it helped

4 0

3 years ago

The three factors that must exist for a person to commit fraud include

Nimfa-mama [501]

Answer:

(1) Opportunity, (2) Pressure, and (3) Rationalization must exist for a person to commit fraud.

Important to Note:

Pressure is sometimes referred to as motivation or incentive.

Rationalization is sometimes called justification or attitude.

7 0

2 years ago