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Alekssandra [29.7K]
3 years ago
9

While attempting to solve the equation , Hazel made an error. Her work is shown to the right. Explain the mistake, and provide t

he correct answer.

Mathematics
1 answer:
balu736 [363]3 years ago
3 0

Answer:

Step-by-step explanation:

X=-11 because,

Step 1: Simplify both sides of the equation.

x

2

+

4

x

=

77

Step 2: Subtract 77 from both sides.

x

2

+

4

x

−

77

=

77

−

77

x

2

+

4

x

−

77

=

0

Step 3: Factor left side of equation.

(

x

−

7

)

(

x

+

11

)

=

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Andrei [34K]

Hi

Answer:

Step-by-step explanation:

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How many terms are in the algebraic expression "962 +6"?
Mademuasel [1]

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8 0
3 years ago
Find the simple interest on Rs. 4500 for 6 months at
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2 years ago
3. The cost of the city permits needed to build this building is 150,000 no matter how many floors with
natima [27]

Answer:

P(x) = 150000

Slope = 0

Step-by-step explanation:

Given

Cost = 150000

Solving (a): The cost function:

From the given parameter, it shows that the number of floor has no effect on the floors.

So, represent the floors with x.

The cost function is:

P(x) = 150000

Solving (b): The slope and its interpretation

A function is represented as:

f(x) = b + mx

Where:

m=slope

By comparing: f(x) = b + mx to P(x) = 150000

m = 0

So:

Slope = 0

<em>What it means is that, no matter the number of floors, the cost remains unchanged.</em>

4 0
3 years ago
Please help I will give 10 pt
Mrac [35]

The expressions 100×10 and the more complicated

(100 - 4a)(10 + a)

are calculating annual (expected) revenue.  In 100×10 the 100 is the number of decks and the 10 is the price per deck.  In (100 - 4a)(10 + a) the 100-4a is the number of decks and the 10+a is the price per deck.  So a must be the amount the price increases.

Answer: amount of price increase, last choice

4 0
3 years ago
Read 2 more answers
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