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elixir [45]
4 years ago
9

Find the value of the expression. a + b − 3 for a = 10 and b = 7

Mathematics
1 answer:
jekas [21]4 years ago
6 0

The value of the expression is 14.

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Convert from vertex to standard form<br>y = 6(×-4)^2-1
Alex73 [517]
Y= 6(x - 4)(x - 4) - 1
y= 6x^2 - 48x + 95
you just have to foil it.
hope i help
3 0
4 years ago
Last week, Donnell practiced the piano 3 hours longer than Marcus. Together, Marcus and Donnell practiced the piano for 11 hours
solong [7]

Answer:

4 hours and 7 hours

Step-by-step explanation:

Marcus = x hours

Donnell = x + 3 hours

Total = 11 hours

  • x + x + 3 = 11
  • 2x + 3 = 11
  • 2x = 8
  • x = 4

So Marcus practiced 4 hours and Donnell practiced  7 hours

3 0
4 years ago
Read 2 more answers
PLZ HELP 50 PTS 1. The county fair charges $2.50 per ticket for the rides. Henry bought 15 tickets for the rides and spent a tot
iris [78.8K]
HEY THERE!!

Ride ticket cost for per ticket is $2.5
and henry bought 15 tickets so in riding he spent $2.5×15 - $ 37.50= $18



(a) And as according to question he spent a total of $55.50 at the fair. Henry spent his money only on ride tickets and fair admission.

So for fair admission he spent
$55.50 -$37.50


HOPE. IT HELPS YOU.
8 0
3 years ago
Read 2 more answers
2x +8=2(x + 4) what is the answer?​
alexdok [17]

2x +8=2(x + 4)

mutiply the bracket by 2

(2)(x)= 2x

(2)(4)= 8

2x+8= 2x+8

move 2x to the left side

sign changes from +2x to -2x

2x-2x+8= 2x-2x+8

0+8= 0+8

8= 8

Answer:

All real numbers

4 0
3 years ago
Read 2 more answers
How do the areas of triangle ABC and DEF compare?
guapka [62]

Answer:

C: The area of ABC is 1 square unit greater than the

area of ADEF

Step-by-step explanation:

Due to the area of triangle ABC and triangle DEF, the ABC triangle has dimensions that are 1 square unit greater that the area of ADEF. This is because the lines have different lengths. Good Luck on the Rest of Your Questions!!

6 0
4 years ago
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