2 years ago

Jessica biked for 130 minutes. Ella biked for 170 minutes.

Mathematics

2 answers:

Masja [62]2 years ago

5 0

The answer is C. 130+40

tatyana61 [14]2 years ago

4 0

The answer is c. 130+40 Chloe is correct.

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What is f(x) = 7x2 + 42x written in vertex form?

amid [387]

Answer:

$\boxed{\boxed{y = 7(x+3)^2-63}}$

Step-by-step explanation:

The general vertex form of parabola is,

$y=a(x-h)+k$

where,

(h, k) is the vertex of the parabola.

The given function is,

$\Rightarrow f(x) = 7x^2 + 42x$

$\Rightarrow y = 7x^2 + 42x$

$\Rightarrow y = 7(x^2 + 6x)$

$\Rightarrow y = 7(x^2 + 2\cdot x\cdot 3)$

$\Rightarrow y = 7(x^2 + 2\cdot x\cdot 3+3^3-3^2)$

$\Rightarrow y = 7(x^2 + 2\cdot x\cdot 3+3^3)-7\cdot 3^2$

$\Rightarrow y = 7(x+3)^2-7\cdot 9$

$\Rightarrow y = 7(x+3)^2-63$

This is vertex form the given function.

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3 years ago

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PolarNik [594]

Answer:

50 miles per hour

Step-by-step explanation:

500 miles in 10 hours

= 500/10

= 50 miles per hour

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2 years ago

I need help please i am giving 100 points and brainliest

liubo4ka [24]

Answer:

-3

Step-by-step explanation:

-7x + 4x = 9

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In a zoo there are 21 Lions.<br> 1/3<br> of them are male. How many females are in the zoo?

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Answer: 14 female
Explanation:
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That would be 0.75:) hope this helps!

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