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andrey2020 [161]
3 years ago
15

If Rebecca reads 2pages per minute, how many pages could she read in 2 1/2 hours?

Mathematics
1 answer:
Mamont248 [21]3 years ago
3 0

Answer:

300

Step-by-step explanation:

2*60 for 1 hr

120*2 to find two hrs

2*30 for 1/2 hr

add

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Type the correct answer in the box use/ for the fraction bar
Zarrin [17]

Answer:

see explanation

Step-by-step explanation:

given the 2 equations

y = x² - 2x - 19 → (1)

y + 4x = 5 → (2)

substitute y = x² - 2x - 19 into (2)

x² - 2x - 19 + 4x = 5 ( subtract 5 from both sides )

x² + 2x - 24 = 0 ← in standard form

(x + 6)(x - 4) = 0 ← in factored form

equate each factor to zero and solve for x

x + 6 = 0 ⇒ x = - 6

x - 4 = 0 ⇒ x = 4

substitute each value of x into (1) for corresponding y- coordinate

x = - 6 : y = (- 6)² - 2(- 6) - 19 = 36 + 12 - 19 = 29 ⇒ (- 6, 29)

x = 4 : y = 4² - 2(4) - 19 = 16 - 8 - 19 = - 11 ⇒ (4, - 11)

the solutions are (- 6, 29), (4, - 11)


6 0
3 years ago
Determine the range of the following graph
Ierofanga [76]

Given:

The graph of a function is given.

To find:

The range of the graph.

Solution:

We know that, the domain is the set of input values and range is the set of output values.

In a graph, domain is represented by the x-axis and range is represented by the y-axis.

From the given graph it is clear that there is an open circle at (-8,-8) and a closed circle at (3,4). It means the function is not defined at (-8,-8) but defined for (3,4).

The graph of the function is defined over the interval -8. So, the domain is (-8,3].

The values of the function lie in the interval -8. So, the range is (-8,4].

Therefore, the range of the function are all real values over the interval (-8,4].

7 0
3 years ago
What is the surface area of this triangular pyramid?
solniwko [45]

Answer:

Step-by-step explanation:

Hence, the surface area of a triangular pyramid is 140 square units.

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3 years ago
Brainliest if correct. YOUR ASSIGNMENT: Valuable Coins
STALIN [3.7K]

Answer: Coin B And Coin C

Step-by-step explanation:

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3 years ago
The perimeter of a rectangle is 136 ft. The ratio of its length to its width is 9:8. What are the dimensions of the rectangle?
KATRIN_1 [288]
2100000000000000000000000000000000000000000000000000000000000000000




4 0
3 years ago
Read 2 more answers
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