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3 years ago

Log2 (x+3)+log2 (x+3)=4

Mathematics

2 answers:

lord [1]3 years ago

8 0

Log2(x+3^2) = 4
2^4= (x+3)(x+3)
2^4= x^2 + 6x + 9
x^2 + 6x - 7
(x-1) (x+7)
X= 1, -7

Rina8888 [55]3 years ago

7 0

4log squared plus log (2)

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Ira Lisetskai [31]

Answer:

3.9 units

Step-by-step explanation:

We are given that,

Time taken by each swing = 2.2 seconds

The pendulum formula is given by, $T = 2\pi \sqrt{\frac{L}{32}}$ , where T is the time taken and L is the length of the swing.

So, we have,

$2.2= 2\pi \sqrt{\frac{L}{32}}$

i.e. $\frac{2.2}{2\pi}=\sqrt{\frac{L}{32}}$

i.e. $(\frac{2.2}{2\pi})^{2}=\frac{L}{32}$

i.e. $L=32\times (\frac{2.2}{2\pi})^{2}$

i.e. $L=32\times \frac{4.84}{4 \pi^2}$

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i.e. L = 3.923 units

So, rounded to tenths, the length of the swing is 3.9 units.

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2 years ago

caroline won $250,000 in a lottry. after paying $96,000 in taxes, she placed the remaining amount in a savings account at 2% int

BigorU [14]

Answer:

18,480

Step-by-step explanation:

you would fine how much she put in the bank in the first place!

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Then you would do 154,000*0.02 to find how much interest is charged per month.

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Finally, you would multiply 3080 by 6 {because you need to account for all of the months}.

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3 years ago

What is the factorization of the polynomial below<br>-x^2 - 15x - 56

Andrej [43]

Answer:

Step-by-step explanation:

This is more easily understood if you take out a common factor of -1

-1(x^2 + 15x + 56)

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2 years ago

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mezya [45]

The answer is a.
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3 years ago

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kow [346]

Let represents the total cost. We know for our problem that each yard of satin fabric costs $8.09, so yards will cost . similarly, each yard of cotton fabric costs $3.79, so yards will cost . We can also infer that the total cost, , will be the sum of the yards of satin fabric and the yards of cotton fabric, so:

Now, to determine the amount that Angeline would spend in all if she bought 5 yards of satin fabric and 8 yards of cotton fabric, we just need to replace and in our expression:

We can conclude that if Angeline would spend in all if she bought 5 yards of satin fabric and 8 yards of cotton fabric, she would spend $70.77

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