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Viktor [21]
3 years ago
11

For the equation (2x - 2) (4x +4)

Mathematics
1 answer:
ss7ja [257]3 years ago
3 0

Answer:

(2x - 2) (4x +4)

= 2x*4x + 2x*4 - 2*4x - 2*4

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

= 8x^2 - 8

Your answer is correct. Great.

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Help me<br> On this pleaseee
Evgen [1.6K]
2 rectangle shaped
1) Length = 160 mi ; Width = 40 mi
2) Length = 440 mi - 160 mi ; Width = 240 mi - 70 mi

1 triangle shape
1) base = 70 mi ; height = 440 mi - 160 mi

Area Rectangle 1 = 160 mi * 40 mi = 6,400 mi²
Area Rectangle 2 = 280 mi * 170 mi = 47,600 mi²
Area Triangle 1 = ((440 mi - 160 mi) * 70mi)/2 = (280mi * 70mi)/2 = 9,800 mi²

Total Area = 6,400 mi² + 47,600 mi² + 9,800 mi² = <span>63,800 mi²</span>
4 0
3 years ago
Winnie wrote the following riddle.I am a number between 60 and 100.My ones digit is two less than my tens digit.I am a prime num
Kazeer [188]

Answer:

79

Step-by-step explanation:

60<xy<100

y -2 =x


if it is prime

y cannot be even

so y could be      1,3,5,7,9

x would then be 9,1,3,5,7

but to be between 60 and 100

x must be 7 or 9

so the number must be 79 or 57

57 is not prime so

the number is 79

5 0
3 years ago
Solve using substitution.<br> x - 7y = 13<br> x + 4y = 2
belka [17]

Answer:

second is 1.50 first is 11.15

Step-by-step explanation:

see if it works for you I changed my fractions into decimals

7 0
3 years ago
Help plsssss no links plss
Nataly [62]
Perimeter:62 area:84
3 0
2 years ago
Read 2 more answers
Construct quadrilateral wxyz with wx yz so that wx=f and yz=3f
Sedbober [7]
It should look like a trapezoid where the segment yz should be 3 times longer than segment wx
6 0
2 years ago
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