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expeople1 [14]
3 years ago
7

Please, help me. I'LL GIVE BRAINLIEST.

Mathematics
2 answers:
Anni [7]3 years ago
7 0
X= -18 (negative eighteen)
insens350 [35]3 years ago
6 0

Answer:

x = -18

Step-by-step explanation:

To find out what the number is, write an algebraic equation based off the given information and solve for x.

It's given that the sum of a number (represented by the variable x) and 12 -- meaning this part would be written as x + 12 -- equals -6. This would mean the equation would be x + 12 = -6.

Now that you've written an equation, isolate x to find its value. (Just subtract both sides by 12.)

x + 12 = -6\\x = -18

Therefore, x = -18.

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The velocity v in meters per second of a certain type of wave is given by v(h)=3 square root h
Serga [27]
The rate of change will be given by:
v(h)=3√h=3h^0.5
The rate of change will be:
v'(h)=(3×0.5)x^-0.5=1.5x^-0.5
hence when h=2 meters, then the rate of change will be:
v'(h)=1.5×2^-0.5
v'(h)=1.061 m/s
7 0
3 years ago
Is anyone able to do this?
nirvana33 [79]

Answer:

X = 52°

Step-by-step explanation:

Because it is equalitral triangle in which all sides have angles

5 0
2 years ago
X-7=7-x find solution
adell [148]

Answer:

7

Step-by-step explanation:

x-7=7-x

2x-7=7

2x=14

x=7

6 0
3 years ago
Read 2 more answers
A progression has a second term of 96 and a fourth term of 54. Find the first term of the progression of the progression is arit
Vladimir79 [104]

Here, we are required to find the first term of an arithmetic progression which has a second term of 96 and a fourth term of 54.

  • The first term of the progression which has a <em>second term</em> of 96 and a <em>fourth term</em> of 54 is; a = 117.

<em>In Arithmetic progression, the N(th) term of the progression is given by the formular;</em>

T(n) = a + (n-1)d

where;

  • a = first term

  • d = common difference.

  • n = nth term.

Therefore, from the question above;

  • T(2nd) = a + d = 96..............eqn(1)

  • and T(4th) = a + 3d = 54..........eqn(2)

By solving the system of equations simultaneously;

we subtract eqn. 2 from 1, then we have;

<em>-2d = 42</em>

Therefore, d = -21.

However, the question requests that we find the first term of the progression; From eqn. (1);

a + d = 96

Therefore,

  • a - 21 = 96
  • a = 96 + 21

Ultimately, the first term of the progression is therefore; a = 117

Read more:

brainly.com/question/18828482

5 0
3 years ago
88 Is 20 percent of what number?
ValentinkaMS [17]

Answer:

  440

Step-by-step explanation:

You can write the problem statement in math terms as ...

  88 = 0.20 × (what number)

To solve this, divide by the coefficient of the variable, 0.20.

  88/0.20 = (what number)

  440 = (what number)

The number you're looking for is 440.

_____

Of course you know that 20% = 20/100 = 0.20.

(% is a shorthand way to write /100.)

5 0
3 years ago
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