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andrey2020 [161]
3 years ago
14

Can anyone simplify this? 4x - 3(x - 2y) + 1/2(6x - 8y)

Mathematics
1 answer:
GaryK [48]3 years ago
5 0

4x - 3(x - 2y) + 1/2(6x - 8y) \\ 4x - 3(x - 2y) + 0.5(6x - 8y) \\ 4x - 3x + 6y + 3x - 4y \\ 4x + 2y
Answer is 4x+2y
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Simplify the expression.<br><br><br> 5.3x - 9 + 7.6x
babunello [35]

Answer:

12.9x-9

Step-by-step explanation:

First you have to combine the like terms which are 5.3x + 7.6x= 12.9x. Then you just rewrite the equation 12.9x-9. You just leave the 9 by it self beacuse thers no other like terms.

7 0
3 years ago
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Un televisor costaba $9.000 y hoy cuesta<br> $500 menos, ¿cuál es el porcentaje de<br> descuento?
marusya05 [52]

A television used to cost $9,000 and today it costs

$500 less, what is the percentage of

discount?

Percentage discount: 5 5/9 percent

3 0
3 years ago
Last question! Pls answer with ur hard work
steposvetlana [31]

Answer:

Step-by-step explanation:

I think it’s asking what shape it is ? not sure but if so #9 is a rhombus and #10 is a rectangle

If that’s not what it’s asking I’m so sorry

4 0
3 years ago
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Solve 9^x + 4 = 11 for x using the change of base formula log base b of y equals log y over log b.
Sauron [17]

Answer:

If you meant 9^x+4=11, then the answer is approximately 0.866.

If you meant 9^{x+4}=11, then the answer is approximately -2.909 which looks like what you meant based on the choices.

Step-by-step explanation:

9^x+4=11

First step is to get the exponential part by itself. The part that has the variable exponent which is the 9^x term.

To do this we need to subtract 4 on both sides:

9^x=11-4

Simplify:

9^x=7

The equivalent logarithmic form is:

\log_9(7)=x

I always say to myself the logarithm is the exponent that is how I know what to put opposite the side containing the log.

Anyways if you don't have options for computing \log_b(a) in your calculator you need to use the change of base formula.

\frac{\log(7)}{\log(9)}=x

So x \approx 0.8856

I don't see this as a choice so maybe you actually meant the following equation:

9^{x+4}=11

Let's see if this is the correct interpretation.

So the exponential part is already isolated.

So we just need to put in the equivalent logarithmic form:

\log_9(11)=x+4

Now we subtract 4 on both sides:

\log_9(11)-4=x

Again if you don't have the option for computing \log_b(a) in your calculator, you will have to use the change of base formula:

\frac{\log(11)}{\log(9)}-4=x

x \approx -2.909

6 0
3 years ago
Help please. I really don’t know this one...
Elan Coil [88]
F(g)=sqrt(7x+b)
f(g(4))=sqrt(7*4+b)=6
sqrt(28+b)=6
28+b=36
b=36-28
b=8 which is A
3 0
4 years ago
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