Which expression represents the phrase "three times the sum of a number and 4"?

Mathematics

1 answer:

Alexxandr [17]3 years ago

3 0

The answer is D. 3(x+4)

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What is y + 11 = 1/3(x + 3) in standard form?

lorasvet [3.4K]

Standard form is y=Mx+b so first step is to isolate y:
Y=1/3(x+3)-11

Then use order of operations to simplify the x to a whole number. First multiply by three:
3y=x+3-33

Now combine like terms:
3y=x-30

Finally,
Divide to make y have a coefficient if one:

Y= 1/3x -10

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3 years ago

Solve for x using technology 2 log 3(x-1)=log(4 x 2-25)

bagirrra123 [75]

2 log 3(x-1)=log(4 x 2-25)
1. Determine the domain. Since the input to the log function cannot be zero or negative, 4x^2-25 must be ≥ 0. Thus, x^2 must be >0, or x>0. Same domain applies to log (3(x-1); x must be > 0.
2. Rewrite 2 log 3(x-1) as log 3(x-1)^2.
3. Then we have log 3(x-1)^2 = log(4 x 2-25). We can discard the operator "log" from both sides: 3(x-1)^2 = 4 x 2-25. There are various ways in which to solve this. Since you're supposed to "use technology,"
graph y = 3(x-1)^2 and y = 4x^2 - 25 on the same set of axes. Determine, using visual estimation or your calculator's tools, the value or values of x that satisfy this equation. My result was x=3, y =11.

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3 years ago

(GIVING BRAINLYIST) 5 cakes are shared equally between 6 people. What fraction of a cake does each person receive? use fraction

Keith_Richards [23]

Answer:

5/6

Step-by-step explanation:

5/1 cakes shared by 6/1 people. To divide, we can freeze flip and multiply the fractions to get to 5/1 * 1/6 = 5/6 cakes per person. Let me know if this helps.