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Mnenie [13.5K]
3 years ago
12

2a + 2b=7 4a +3b = 12

Mathematics
2 answers:
salantis [7]3 years ago
8 0

Answer:

a = 3/2, b = 2.

Step-by-step explanation:

2a + 2b = 7

4a + 3b = 12

If we multiply the first equation by 2 we get

4a + 4b = 14

Subtracting this from second equation:

-b = -2

b = 2.

Substitute b = 2  in the first equation

2a + 2(2) = 7

2a = 3

a = 3/2.

Bad White [126]3 years ago
3 0

Answer:      1. a = 7 /2 − b                         2.a = 3 − 3 b 4

Step-by-step explanation:

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AABC is a right triangle. If AC = 15 and BC = 17, find AB.
Schach [20]

Answer:

AC=15

BC=17

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According to Pythagore's Theorem: AB² + AC² = BC².

AB² = BC² - AC²

= (17)² - (15)²

= 289 - 225

AB² = 64

AB = √(64)

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So AB = 8.

4 0
4 years ago
What is the lateral area of a right cylinder if the radius of the base is 12 mm and the altitude of the cylinder is 5 times the
lakkis [162]
The lateral area of a cylinder is given by:
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5 0
4 years ago
How do I make 3 - 10= 7 into an integer
Delicious77 [7]
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8 0
3 years ago
2) Puppy B weighs 8 pounds, which is about 75% of its adult weight. What will be the
masha68 [24]

Answer:

Puppy A weighs 8 pounds, which is about 25% of its adult weight. What will be the adult weight of Puppy A? Puppy B weighs 8 pounds, which is about 75% of its adult weight. What will be the adult weight of Puppy B?

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Explain how solving 4x < -16 is different from solving -4x< 16.
nalin [4]

Answer:

Dividing by 4 and -4

Step-by-step explanation:

Solving 4x < -16 is different from solving -4x< 16, because for 4x < -16, you are dividing by a positive 4 on both sides, but for -4x< 16, you are dividing by -4 on both sides.

3 0
2 years ago
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