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Kisachek [45]
3 years ago
13

If x = 6, what is the value of 4x2 - 7? O A. 151 B. 137 C. 571 D. 172

Mathematics
2 answers:
Elan Coil [88]3 years ago
6 0

Answer:

B. 137

Step-by-step explanation:

Assuming by 4x2 you meant 4x^{2}, you plug in the 6 into x.

After, you would square 6, giving you 36.

Then you multiply 36 by 4, getting 144

All that's left to do is subtract 7 from 144 and ending with 137.

aalyn [17]3 years ago
5 0

Answer: B

Step-by-step explanation: 6^2 = 36

36*4= 144

144-7= 137

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A box contains two purple marbles nine orange marbles and seven yellow marbles if you pick two without looking what is the proba
maw [93]

Answer:

1/4

Step-by-step explanation:

First, add up the marbles:

2 + 9 + 7  = 18

Multiply by 2 because you pick two:

18 × 2 = 36

Simplify:

9/36 = 3/12 = 1/4

Hope this helped.

8 0
3 years ago
Your hotel has 200 rooms in Dallas. There is a sport event coming up, and fans either book a rooms months before or wait for the
dedylja [7]

Answer:

89 rooms should be set for early book customer

Step-by-step explanation:

According to the given data we have the following:

OVERAGE(CO) = 200

SHORTAGE(CS) = 500

In order to calculate how many rooms should be set for early book customer we would have to use the following formula:

OPTIMAL BOOKING = MEAN + (Z * STDEV)

MEAN = 75

STDEV = 25

SERVICE LEVEL= CS / (CS + CO) = 500 / (500 + 200) = 0.7143

Z VALUE FOR 0.7143 = 0.57

OPTIMAL BOOKING =  75 + (0.57 * 25) = 89

89 rooms should be set for early book customer

3 0
3 years ago
Write a compound inequality for the graph shown below.<br> Use x for your variable.
Effectus [21]

Step-by-step explanation:

what i understand is x is a axis

8 0
3 years ago
FOR BRAINLIEST ANSWER ONLY:<br><br> 2.<br><br> 3.<br><br> 4.<br><br> 6.
nasty-shy [4]

Answer:

2. x = 2 & y = 4

3. x = 4 & y = 2

Step-by-step explanation:

2. x + y = 6

  2x + y = 8  (multiply the first equation by -1,  so you can eliminate the ys)

- x - y = -6

2x + y = 8  (now add the variables together)

x = 2 (plug in x in one of the equations to find out y)

x + y = 6

(2) + y = 6

-2           -2

y = 4

3. 3x + y = 14

          x = 2y (plug in x into the first equation and solve it for y)

3(2y) + y = 14

6y + y = 14

7y = 14

y =  2  (plug in y in one of the equations to find out x)

x = 2y

x = 2(2)

x = 4

4.  One number (x) is 2 more (+2) than twice (times 2) as large as another. their sum is 17. Find the numbers.

2x + 2 = 17 (solve for x)

     -2     -2

2x = 15

x = 7.5

6. 7 (4x + 1) - (x + 6) (start by distributing 7 into the first parenthesis)

  (28x + 7) - (x + 6) (do the same to the other parenthesis by distributing -1)

  (28x + 7)  (-x - 6) (and now just combine like terms)

   28x + 7 - x - 6

   28x - x + 7 - 6

   27x + 1

i hope this helped! if you have any question, pls let me know!

6 0
3 years ago
1. Jamie received $25 from her favorite aunt for her birthday. She wants to save her money to
dusya [7]

Answer:

y=5x+25

if that's what u need

7 0
3 years ago
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