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2 years ago

Find the value of:3x^2+2x-4When x=4

Mathematics

2 answers:

Marina CMI [18]2 years ago

6 0

3x² + 2x - 4

=》x = 4

Substitute the value of 'x' in the expression.

3x² + 2x - 4

= 3(4)² + 2(4) - 4

= 3(16) + 8 - 4

= 48 + 8 - 4

= 56 - 4

= 52

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Hope it helps ⚜

a_sh-v [17]2 years ago

3 0

Refer to the attachment!

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lutik1710 [3]

Answer:

562 child tickets were sold

217 adult tickets were sold

Step-by-step explanation:

A festival charges $3 for children admission and $5 for adult admission

At the end of the festival they have sold a total number of 779 tickets for $2771

Let x represent the child ticket

Let y represent the adult ticket

x + y= 779..............equation 1

3x + 5y= 2771..........equation 2

From equation 1

x + y = 779

x= 779 -y

Substitute 779-y for x in equation 2

3x + 5y= 2771

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2y= 2771 -2337

2y = 434

y = 434/2

y = 217

Substitute 217 for y in equation 1

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x + 217= 779

x = 779-217

x= 562

Hence 562 child tickets were sold and 217 adult tickets were sold

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3 years ago

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<span>For degrees, multiply the number of revolutions by 360

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Step-by-step explanation:

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