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pshichka [43]
2 years ago
11

.In which step below does a mistake first appear in

Mathematics
1 answer:
Dmitry [639]2 years ago
5 0

Answer:

step 2

Step-by-step explanation:

from -8(a+6) to -80 - 48 is incorrect

when you multiply -8 x a it's -8a not -80

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Use Substitution to solve the system of equations. c+b=12 2b-3c=1 1/2
mixas84 [53]
4b - 6c = 11
c + b = 12
4c + 4b = 48
10c = 39
c = 3.9
b = 12 - 3.9
b = 8.1

6 0
3 years ago
What do I do I don’t know the answer
tatuchka [14]

Answer:

B) 114.511m^3

Step-by-step explanation:

Formula of a cylinder is πr^2 x h

r = radius (half of diameter)

h = height

Since it is 3/4 full you only do 3/4 of the height so- 0.75 x 9.60 which equals <em>7.2</em>

Half of the diameter is 2.25. 2.25^2 =<em> 5.0625.</em>

The volume of the cylinder = <em>5.0625π x 7.2</em>

By solving this, you will get approximately <em>114.511 m^3</em> as your answer.

4 0
2 years ago
Whats the LCM of 40 and 5
Simora [160]

Answer:

The LCM of 40 and 5 is simply 40.

Step-by-step explanation:

To find the lowest common multiple of any 2 numbers, we will first list the prime factors of each number.

40: 2 × 2 × 2 × 5

5: 5

Then we need to multiply each factor the most amount of times it appears in either number.

2: 3 times in the first number

5: 1 time in either number

Now we multiply these.

2 × 2 × 2 × 5 = 40

The LCM of 40 and 5 is simply 40.

3 0
3 years ago
Helpppp!!! Plzzzzzzzz
mario62 [17]

Answer:

32.25

Step-by-step explanation:

You take 5, and multiply times 13. this gets you 65. Divide by two. 32.25. boom

8 0
3 years ago
Read 2 more answers
Find the length of the hypotenuse. Round your answer to the nearest hundredth. *
Rom4ik [11]

Answer:

c = 8.06

Step-by-step explanation:

Use the Pythagorean theorem.

a^2 + b^2 = c^2

c^2 = a^2 + b^2

c^2 = 4^2 + 7^2

c^2 = 16 + 49

c^2 = 65

c = sqrt(65)

c = 8.06

3 0
3 years ago
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