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bogdanovich [222]
3 years ago
12

If n = 4, what is the value of 6n - 3

Mathematics
1 answer:
Arturiano [62]3 years ago
3 0
Answer: 21
steps:
1) 6(4) - 3
2) 24 - 3
3) 21
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Solve the system of equations below
DENIUS [597]

Answer:

The answer is B. (-7,-2)

Step-by-step explanation:

Multiply the first equation by 7,and multiply the second equation by -6.

7(−3x+6y=9)

−6(5x+7y=−49)

Becomes:

−21x+42y=63

−30x−42y=294

Add these equations to eliminate y:

−51x=357

Then solve−51x=357for x:

−51x=357 Divide both sides by -51

x=-7

Write down an original equation:

−3x+6y=9

Substitute−7forxin−3x+6y=9:

(−3)(−7)+6y=9

6y+21=9(Simplify both sides of the equation)

6y+21+−21=9+−21(Add -21 to both sides)

6y=−12

y=-2

4 0
3 years ago
Identify the rule for the following pattern: <br> 4, 24, 144
Ivan

Answer:

It is being multiplied by 6 each time.

Step-by-step explanation:4x6, 24x6

7 0
3 years ago
What is the slope of a line that is perpendicular to y=1/2x+9 that passes through (-7,-4)
Artist 52 [7]
Hi there!

To find the perpendicular slope you need to flip the fraction and change the sign. So 1/2=2/1 and tge original slope was positive, so the slope is -2. Now you sub in the point (-7,-4) in for x and y in the formula y=mx+b and solve for b (sub in 2 for m as well)
Y=mx+b
-4=-2*-7+b
-4=14+b
-4-14=b
B=-18
The equation is y=-2x-18

Hope this helps!
6 0
3 years ago
Which expression is equivalent to 16^2 − 36? (Explain)
seropon [69]

Answer:

4(2x-3)(2x + 3)

Step-by-step explanation:

Here, we want to simplify the given expression

we can have;

16x^2-36

= 4(4x^2 -9)

we can use the difference of two squares

where;

a^2 - b^2 = (a-b)(a + b)

= 4(2x-3)(2x+ 3)

6 0
2 years ago
Which equation does NOT graph a line? A) y = 5 B) y = -3x3 C) y = 2 3 x D) y = −8x
kotykmax [81]
<span>B) y = -3x3


</span>-----------------------------------
7 0
2 years ago
Read 2 more answers
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