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galben [10]
3 years ago
8

Without the use of a calculator, calculate 77^2−23^2.

Mathematics
2 answers:
umka2103 [35]3 years ago
7 0

Answer:

5400

Step-by-step explanation:

77x77=5929

23x23=529

5929-529

5400

stepan [7]3 years ago
4 0

Answer:

5400

Step-by-step explanation:

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Match the equations of the lines with their graphs.
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2. y= 2x + 3

3. y = -2x + 3

4. y = -2x - 3

Step-by-step explanation:

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2 years ago
Stephen lives in Texas and makes $48,000 a year. If the median annual income in Texas is $51,205 and the median annual income in
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3 years ago
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let x represent one number and let y represent the other number. use the given conditions to write a system of equations. solve
kiruha [24]

9514 1404 393

Answer:

  (x, y) = (8, 2)

Step-by-step explanation:

The relevant equations are ...

  3x -y = 22

  x +2y = 12

__

We can eliminate y by adding twice the first equation to the second.

  2(3x -y) +(x +2y) = 2(22) +(12)

  7x = 56

  x = 8

Substituting into the first equation gives ...

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The first number is 8; the second number is 2.

7 0
3 years ago
The school cafeteria serves tacos every 60 and cheeseburgers every eighth day.If tacos and cheeseburgers are both on today's men
Ad libitum [116K]

Answer:

120 days

Step-by-step explanation:

Tacos are served every 60 days.

Cheeseburgers are served every 8 days.

Since, both Cheeseburgers and Tacos are served today, the next day on which both will be served is gotten by finding the Lowest Common Multiple of 60 and 8.

To find the LCM,

First, we express the numbers as a product of their prime factors.

60= 2X2X3X5=2²X3X5

8=2X2X2=2³

Next, we take each of the term with the highest power and multiply.

L.C.M = 2³X3X5=120

After 120 days, Cheeseburgers and Tacos will be served on the same day.

5 0
3 years ago
1092 is what percent of 1140
REY [17]
95.97

Answe
Is
95.97
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Bla 20 20
7 0
2 years ago
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