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IrinaK [193]
3 years ago
8

What is the value of f(x) = –x2 – 2 when x = –1?

Mathematics
1 answer:
djyliett [7]3 years ago
8 0
0 because the -x cancels out the ones negative and 1 x 2 is 2. And 2-2 is 0
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Solve negative 5 over 2, the whole multiplied by x minus 5 equals negative 55.
astraxan [27]

Answer:

-24

Step-by-step explanation:

-  \frac{5}{2} x \:  - 5 = 55

Multiply through by the denominator (that is, 2)

= 2 \times ( -  \frac{5}{2} x) \:  - 5(2) = 55(2)

=  - 5x - 10 = 110

Collect like terms

- 5x \:  = 110 +10

- 5x = 120

Divide through by - 5x

\frac{ - 5x}{ - 5}  =  \frac{120}{ - 5}

x =  - 24

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A line segment is partitioned with a ratio 2:5, how many total parts has the segment been split into
schepotkina [342]

Answer:

7 parts

Step-by-step explanation:

To get the answer to this, we only simply to know the number of times in which the division was made.

This means that the total ratio of the lines is 2 +5 = 7. Meaning we have 7 different divisions.

The first division carries 2/7 while the second division carrues 5/7

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3 years ago
Graph the quadratic variation if g(x) varies directly with x^2, and g(x) = 75 when x = 5.
Darina [25.2K]

Answer:

Third graph from the top

Step-by-step explanation:

Formula for g(x) is  g(x) = 3 · x∧2

When we replace x=5 in the formula we get:

g(5) = 3 · 5∧2 = 3 · 25 = 75

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Write the set of in roster form if M is the set of integers that are greater that -1 and less than 4?
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