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motikmotik
2 years ago
6

If f(x) = 3x² tlo, what is f(-7)?

Mathematics
1 answer:
tia_tia [17]2 years ago
4 0

Answer:

Step-by-step explanation:

Be careful how you handle this.

f(-7) = 3(-7)^2

f(-7) = 3* 49     Notice the minus sign disappears. That's because there are 2 of them.

f(-7) = 147

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The length of BC would be 6ft
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Which values are solutions of the inequality 5 &lt; y -8<br><br>8 , 9. , 13. , 15. , 20
Sladkaya [172]

Answer:

5 is greater than y-8 since 5 is positive it + in the begging +5 while - 8 is less than 0 because it has - in the begging

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2 years ago
Una pelota sale disparada desde el nivel del suelo, con una velocidad de 40 m/s y un ángulo de elevación de 50°. a) Calcule la a
DedPeter [7]

Respuesta:

Los 47.85m

Explicación paso a paso:

Altura máxima = u²sin²Ф / 2g

Dado

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g = 9,81 m / s²

Sustituir'

H = 40²sin²50 / 2 (9,81)

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6 0
3 years ago
Derek estimated the cost of his grocery bill to be $75, but it actually cost $110. Find the percent error rounded to the nearest
zhannawk [14.2K]

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5 0
3 years ago
✎Question:Amirah is 4 years elder than Priya and Shirley is 2 years younger than Priya. If the sum of their ages is 47, find the
Gnom [1K]

Answer:

Priya's age = 15

Amirah's age = 19

Shirley's age = 13

Step-by-step explanation:

Let x be the age of Priya.

According to the question,

Amirah's age = x + 4

Shirley's age = x - 2

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So,

x + 4 + x + x - 2 = 47

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x = 45/3

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So,

Priya's age = 15

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Shirley's age = 15 - 2 = 13

7 0
3 years ago
Read 2 more answers
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