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4 years ago

Is -3 a solution to the equation 3x-5=4+2x explain PLZ HELP!

Mathematics

1 answer:

morpeh [17]4 years ago

7 0

Answer:

No, the answer is 9

Step-by-step explanation:

<u>Solve equation</u>

3x - 5 = 4 + 2x
3x - 5 - 2x + 5 = 4 + 2x - 2x + 5
x = 9

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A n =−1+3(n−1) an=−1+3(n−1) what is the 55 term in the sequence

Sindrei [870]

ANSWER

$a_{55}=161$

EXPLANATION

The general term for the sequence is

$a_n=-1+3(n-1)$

To find the 55th term, we have to substitute
$n = 55$
in to the general term and simplify.

This implies that,

$a_{55}=-1+3(55-1)$

$a_{55}=-1+3(54)$

$a_{55}=-1+162$

$a_{55}=161$

Therefore the 55th term is 161.

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3 years ago

What is the rule for the pattern below?<br> 58, 50, 42, 34, 26

irinina [24]

Answer:

Subtract 8 each time.

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3 years ago

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Use a graphing calculator to approximate the vertex of the graph of the parabola defined by the following

vivado [14]

Answer: (-0.4, 6.8)

The graph is attached

Step-by-step explanation:

We can find the axis of symmetry using the formula x = -b/2a

x = - -4/2(-5)

x = 4/-10

x = 0.04

Substitute for x and calculate y

y = $\left(0.4^{2}\right)\left(-5\right)-4\left(-0.4\right)\ +6$

y = 6.8

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3 years ago

Which ratio is greater? 3 : 4 or 5:6

olga55 [171]

Answer:

5:6 is greater than 3:4.

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3 years ago

In a clock, a large gear completes a rotation every 45 seconds, a small gear completes a rotation every 18 seconds. The gears al

RUDIKE [14]

If the big gear makes 2 circles and the small gear makes 5 circles they will both be on 90 sec so it will take 90 seconds I think. My dad helped me with this one :D

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3 years ago

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