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2 years ago

I need help answering this question..

Mathematics

1 answer:

Irina-Kira [14]2 years ago

7 0

Answer:

$x=3$

Step-by-step explanation:

Given: $15=7x-6$

To solve this equation, we need to isolate $x$ on one side of the equation algebraically. I see that we have like terms, but they are on opposite sides of the equal sign. Let's add $6$ to both sides.

$21=7x$

To isolate x, divide both sides by 7.

$x=3$

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PLEASE HELP THIS IS WORTH 50 POINTS!!!

Pani-rosa [81]

Answer:

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Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

What is the value of x? Show your work each step of the way. No work means NO points!

Brrunno [24]

Answer:

The value of x is -10.

Step-by-step explanation:

Given : Expression $3x-8=\frac{8x+4}{2}$

To find : What is the value of x?

Solution :

Step 1 - Write the expression,

$3x-8=\frac{8x+4}{2}$

Step 2 - Cross multiply,

$6x-16=8x+4$

Step 3 - Take like terms together,

$6x-8x=4+16$

Step 4 - Solve,

$-2x=20$

$x=-\frac{20}{2}$

$x=-10$

Therefore, The value of x is -10.

5 0

3 years ago

Stan worked 4 years less than Marco.This year Stan has worked 29 years.If b is how long Marco worked, the equation b - 4 = 29 re

MA_775_DIABLO [31]

Answer:

Add 4 on both sides.

In the equation there is a -4.

If -4+4=0, that is how you would get rid of the -4.

But, you need to add 4 to 29 to really get rid of the -4.

So, 29+4 is 33.

b=33

6 0

3 years ago

What is the nth term of the geometric sequence -2,10,-50

poizon [28]

Answer:

$T_n=-1(-5)^n^-^1$

Step-by-step explanation:

We are given;

A geometric sequence;

-2,10,-50

Required to determine the nth term

The nth term in a geometric sequence is given by the formula;

$T_n=a_1r^n^-^1$

where $a_1$ is the first term and r is the common ratio;

In this case;

$a_1=-2$

r = 10 ÷ -2

= -5

Therefore;

To get the nth term in the given geometric sequence we use;

$T_n=-1(-5)^n^-^1$

Thus, the nth term is $T_n=-1(-5)^n^-^1$

3 0

2 years ago

Please help. Screenshot attachedn

NARA [144]

Answer:

x = -0.17 and x = -5.83

Step-by-step explanation:

We are asked to solve the quadratic equation

$x^2+6\,x+1=0$

We use the quadratic formula using a = 1, b = 6 and c = 1

for a general quadratic equation of the form: $ax^2+bx+c=0$

Then, the solutions are given by;

$x=\frac{-6+/-\sqrt{36-4\,(1)\,(1)} }{2} =\frac{-6+/-\sqrt{32} }{2}$

which produces the two following answers (rounded to two decimals):

x = -0.17 and x = -5.83

8 0

3 years ago

I need help answering this question..​

I need help answering this question..