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Lilit [14]
2 years ago
12

Equation: –4x – 5 + 2x = –11

Mathematics
2 answers:
saveliy_v [14]2 years ago
7 0

Answer:

x = 3

Step-by-step explanation:

-4x  + 2x - 5 = -11

Combine like terms

-2x - 5 = -11

Add 5 to both sides

-2x = -11 + 5

-2x = -6

Divide both sides by (-2)

x = -6/-2

x = 3

BaLLatris [955]2 years ago
5 0
<h2><u>ANSWER </u></h2>

x= 3

Step-by-step explanation:

=> -4x – 5 + 2x = -11

=> -2x = -11+5

=> -2x = -6

=> x= 6/2

=> x= 3

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Solve 4^x+2 = 12 for x using the change of base formula log base b of y equals log y over log b.
valentinak56 [21]

The value of x is 1.66

Step-by-step explanation:

Let use revise the rules of exponential and logarithmic equations

1. If y = b^{x}, then log_{b}(y)=x

2. log_{b}(y) = \frac{log(y)}{log(b)}

Use the rules above to solve the problem

∵ 4^{x}+2=12

- Subtract 2 from both sides

∴ 4^{x}=10

change the exponential equation to logarithmic equation

∴ log_{4}(10)=x

∵ log_{4}(10) = \frac{log(10)}{log(4)}

∴ x = \frac{log(10)}{log(4)}

∴ x = 1.66

The value of x is 1.66

Learn more:

You can learn more about logarithmic function in brainly.com/question/10633485

#LearnwithBrainly

6 0
3 years ago
Timothy has a fenced-in garden in the shape of a
sattari [20]

Answer:

From the attached graphic we see that

rhombus side =   Sqr Root [(Long Diagonal / 2) ^ 2 + (Short Diagonal / 2) ^ 2]

rhombus side =   Sqr Root [(24/2)^2 + (18/2)^2]

rhombus side =   Sqr Root [144 + 81]

rhombus side =  Sqr Root (225)

rhombus side = 15 feet

Step-by-step explanation:

7 0
3 years ago
2. Which equation is equivalent to x+8 = 21?
lakkis [162]

Answer:

The most obvious one i can think of would be

x = 13

Step-by-step explanation:

x + 8 = 21

x + 8-8 = 21-8

x = 13

3 0
3 years ago
Please help me i really need help please
Vanyuwa [196]

Answer:

7: 100

8: 40

9: 74

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
How do mental math strategies help you solve problems such as the ones above?
Luden [163]

With mental math, you can perform equations quickly and efficiently. They also help you to develop your own strategies and solve more complex math equations. Hope this helps;)


7 0
3 years ago
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