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Anon25 [30]
3 years ago
6

Which of the following is equivalent to

Mathematics
1 answer:
KiRa [710]3 years ago
8 0

Answer:

=4\sqrt{10}

Step-by-step explanation:

3\sqrt{40}-2\sqrt{10}\\3\sqrt{40}=6\sqrt{10}\\=6\sqrt{10}-2\sqrt{10}\\\mathrm{Add\:similar\:elements:}\:6\sqrt{10}-2\sqrt{10}=4\sqrt{10}\\=4\sqrt{10}

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Plzzzz help!! Me find x
vivado [14]

Answer:

x=-4

Step-by-step explanation:

These two angles have to equal 180 because they are opposite of each other. Therefore, the equation will be 129+x+x+59=180. You add all common terms. 2x+188=180. You want to isolate x so you have to subtract both sides by 188. Therefore, the equation will be 2x=-8. Divide both sides by 2 to isolate x. x=-8/2. This is equal to x=-4.

If this has helped please mark as brainliest

3 0
3 years ago
Write and solve an equation to represent the following situation.
LuckyWell [14K]

Answer:

6 + 7x = 27

x = 3cm

Step-by-step explanation:

so the question lets us know 3 things:

1) Sarah has a 27 ft pipe

2) she cuts 6 ft off

3) she cuts remaining pipe into 7 equal sections

what we don't know from the question is how big each of those 7 sections were. To form the equation we do this.

Since we know Sarah has 27 ft of pipe that would be our answer of the equation.

Sarah also removed 6 ft and the rest of the pipe she cut up into 7 small sections of equal length. since we don't know the length of the 7 smaller sections we will use the variable X to represent the length. this means that 6ft + 7x (X is the length of the pipes, and we multiply by 7 since there are 7 of them) must equal Sarah's total length of 27ft, therefore meaning our education would be

6 + 7x = 27

to solve for how long each pipe was, we need to solve for X by rearranging the equation as shown bellow.

7x = 27 - 6

7x = 21

x =  \frac{21}{7}

x = 3cm

4 0
3 years ago
HELP PLEASSEEE IT REALLY URGENT!!!!<br><br> PLEASE ONLY ANSWER IF YOU ARE CONFIDENT!
Dmitry [639]

Answer:

B. 12.5 feet below the surface of the water

Step-by-step explanation:

-20 + (-32.5) + 40

40 - 52.5

= -12.5 feet

= 12.5 feet below the water

6 0
3 years ago
Solve 2(3x-5)-3(6-4x)+(15x+3)
nadya68 [22]

Answer:

33x-25

Step-by-step explanation:

2(3x-5)-3(6-4x)+(15x+3)

6x-10-18+12x+15x+3

21x+12x-10-18+3

=33x-25

5 0
3 years ago
Read 2 more answers
-5v^2+31v-6 factor the polynomial
jeka57 [31]

The first thing he has to do is take that "minus" sign through the parentheses containing the second polynomial. Some students find it helpful to put a " 1 " in front of the parentheses, to help them keep track of the minus sign. Here's what the subtraction looks like, when working horizontally.

6 0
3 years ago
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