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2 years ago

Help i dont understand this ;/ and ty

Mathematics

2 answers:

cestrela7 [59]2 years ago

8 0

The vertex is the center point of the line or the axis of symmetry
So your answer should be (-2, -5)

blagie [28]2 years ago

3 0

Answer:

answers is A

its the center or the first point of the vertex.

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If f(x) = -4x2 - 6x-1 and g(x) = – x2 - 5x + 3, find (f+ g)(x).

ziro4ka [17]

Answer:

- 5x² - 11x + 2

Step-by-step explanation:

(f + g)(x) = f(x) + g(x)

f(x) + g(x)

= - 4x² - 6x - 1 + (- x² - 5x + 3)

= - 4x² - 6x - 1 - x² - 5x + 3 ← collect like terms

= - 5x² - 11x + 2

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2 years ago

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The time (t days) required to build a house is inversely proportion to the numbers of builders,All looking is same rate.If there

TiliK225 [7]

Answer:

Step-by-step explanation:

16 days is 16/80 = 1/5 the time for 6 builders, so the number of builders required is 1/(1/5) = 5 times that:

5 × 6 builders = 30 builders

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2 years ago

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Guthrie made the input-output table shown below.

Inga [223]

9514 1404 393

Answer:

C 3x +1 = y

Step-by-step explanation:

x-values increase by 1 from row to row.

y-values increase by 3 from row to row.

The slope of the linear function is the ratio of the y-increase to the x-increase:

m = ∆y/∆x = 3/1 = 3

The only offered choice with an x-coefficient of 3 is ...

C 3x +1 = y

If you check this against the table entries, you find it fits.

3(1) +1 = 4

3(2) +1 = 7

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2 years ago

Two students were asked to find the value of a $1000 item after 3 years. The item was depreciating (losing value) at a rate of 4

Yuki888 [10]

Answer:

<em>Student 2 is incorrect because he didn't use the formula properly</em>

Step-by-step explanation:

The exponential function is often used to model natural growing or decaying processes, where the change is proportional to the actual quantity.

An exponential decaying function is expressed as:

$C(t)=C_o\cdot(1-r)^t$

Where:

C(t) is the actual value of the function at time t

Co is the initial value of C at t=0

r is the decaying rate, expressed in decimal

The initial value of the item is Co=$1000, the rate of decay is r=40%=0.4, and the time is t=3 years.

Substituting into the formula:

$C(3)=\$1000\cdot(1-0.4)^3$

$C(3)=\$1000\cdot0.6^3$

C(3)=$216

Student 2 is incorrect because he didn't use the formula properly

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2 years ago

Suppose you toss a 6-sided die 40 times, with 14 tosses landing on the five. What percentage of the tosses would be fives?

Alex777 [14]

$\dfrac{14}{40}\cdot100\%=35\%$

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