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Allisa [31]
3 years ago
8

Log4(7t+2)=2 can someone help me with this? I got it wrong and I do not know why or how to do this.

Mathematics
1 answer:
Naddika [18.5K]3 years ago
6 0

Answer:

t=2

Step-by-step explanation:

log4(7t+2)=2

Raise each side to the base of 4

4^log4(7t+2)=4^2

The log goes away

7t+2 = 16

Subtract 2 from each side

7t+2-2 = 16-2

7t = 14

Divide each side by 7

7t/7 = 14/7

t = 2

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Please help me so lost
Alex777 [14]

Answer:

The answer is the first one - 8 square roots of 3

Step-by-step explanation:

Using formula is sufficient here.

In hexagon there are 6 same triangles.

You calculate the area of one of them by formula (1/2)*(2)*(4square root of 3/3)

You multiply that by 6 and simplify.

The answer is the first one - 8 square roots of 3

I hope I helped you and I will be happy If you mark my answer as brainliest.

6 0
3 years ago
What is the equation of a line that has a slope of 2 and passes through the point (-6, 3)?
musickatia [10]

Answer:

y=2x+15

Step-by-step explanation:

Idk if you still need help but this is the answer.

Explanation:

You want to find the equation for a line that passes through the point (-6,3) and has a slope of 2.

First of all, remember what the equation of a line is:

y = mx+b

Where:

m is the slope, and

b is the y-intercept

To start, you know what m is; it's just the slope, which you said was 2. So you can right away fill in the equation for a line somewhat to read:

y=2x+b.

Now, what about b, the y-intercept?

To find b, think about what your (x,y) point means:

(-6,3). When x of the line is -6, y of the line must be 3.

Because you said the line passes through this point, right?

Now, look at our line's equation so far: . b is what we want, the 2 is already set and x and y are just two "free variables" sitting there. We can plug anything we want in for x and y here, but we want the equation for the line that specfically passes through the the point (-6,3).

So, why not plug in for x the number -6 and for y the number 3? This will allow us to solve for b for the particular line that passes through the point you gave!.

(-6,3). y=mx+b or 3=2 × -6+b, or solving for b: b=3-(2)(-6). b=15.

The equation of the line that passes through the point (-6,3) with a slope of 2

is y=2x+15

6 0
3 years ago
The probability that a single radar station will detect an enemy plane is 0.65. (a) How many such stations are required to be 98
Inga [223]

Answer:

4 stations

Step-by-step explanation:

If we need to be at least 98% certain that an enemy plane flying over will be detected by at least one station, we must ensure that there is at most a 2% chance that no radar stations detect the plane.

The probability that a single radar station does not detect the plane is 0.35.

For n radar stations:

P=0.02=0.35^n\\n=\frac{log(0.02)}{log(0.35)}\\n=3.73

Rounding up to the next whole station, at least 4 stations are needed.

4 0
3 years ago
The first bus stop on a bus route is 4 miles from school.How many ayrds is the first bus stop from school
Serjik [45]
The first bus stop is 4 miles from the school.  1 mile is 1760 yards.   Multiply 1,760 by 4 to get 7,040 yards.  The first bus stop is 7,040 yards from the school.
3 0
4 years ago
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Airida [17]

Answer:

Step-by-step explanation:

I'm not really sure what the answer is here but I think it's 20...

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3 years ago
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