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Marianna [84]
3 years ago
5

What is two more than 4 times a number is -18 translated and solved

Mathematics
1 answer:
Brrunno [24]3 years ago
3 0

Answer:

n=-5

Step-by-step explanation:

Let "n" represent the unknown number.

So, the equation asks for 4n and two more, or +2, that is all equal to -18.

So, your equation will be:

4n+2=-18

First, subtract 2 from both sides:

4n+2-2=-18-2\\4n=-20

Then, divide both sides by 4:

\frac{4n}{4}=\frac{-20}{4}\\n=-5

Therefore, n=-5.

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Hunter-Best [27]

Answer:

-5.3.

Step-by-step explanation:

-8.6 + 2.3 + 1

= -6.3 + 1

= -5.3.

5 0
3 years ago
Write using exponential notation 9*9*4*4*4*4
kolezko [41]
9^2*4^4 is the correct answer I believe.
8 0
3 years ago
Please help me with the questions I have please help me with the question mark you as a brnlist
Harlamova29_29 [7]

Answer:

x = 21

Step-by-step explanation:

You can solve this problem by using similar triangles. You can tell that the two triangles are similar by AAA (since two angles are the same, the third must be too).

Now that we've established that the triangles are similar, you need to identify the corresponding sides:

12 corresponds to 28

9 corresponds to x

In order to find x, you'll need to find the scale factor, which you can find by dividing 28 by 12:

28 ÷ 12 = 7/3

Now that you know that 7/3 is the scale factor, you can multiply it by 9 to find x:

9 × 7/3 = x

x = 63/3

x = 21

4 0
3 years ago
Which expression is equivalent to –4(5x – 9) + 6(2x + 5)?
aleksklad [387]

Answer:

B

(-20x + 36)+(12x+30)

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7 0
3 years ago
Sean’s age and Helen’s age are in the ratio of 3:5. Two years ago, Helen was twice as old as Sean was then. Find their present a
PolarNik [594]
Lets Sean's age be x
Helen's age by y
x/y=3/5
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Second equation
2(x-2)=y-2

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3 0
3 years ago
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