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4 years ago

Which option is equivalent to log 7 - log 2? A. log 5 7 B. log O C. log 9 OD. log 72

Mathematics

1 answer:

svetoff [14.1K]4 years ago

7 0

Answer:

la vida mafio

Step-by-step explanation:

mafioaso.

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How did President George W. Bush respond to the terrorist attacks of September 11, 2001?

Fynjy0 [20]

you answer is C

so the united states invasion of afghanistan occurred after the September 11 attacks in late 2001, supported by close US allies. The conflict is also known as the US war in Afghanistan. the goal was to dismantle al-Qaeda and deny it a safe base of operations in Afghanistan by removing the Taliban from power.

6 0

3 years ago

The rectangle has a length of (x+3) and the width (x+1)

Tamiku [17]

The answer is b
Because you have to add da x and dat is 2x den add da numbers which is 4

7 0

3 years ago

The length of a rectangle is 6 more than twice the width. if the area is 40 cm^2, find the length and breadth of the rectangle

ra1l [238]

Answer: 3.217 & 12.434

Step-by-step explanation:

If we use w to represent the width, the length will be 6 more than 2 times w.

Hence, the length is $2w+6$ .

The area of a rectangle would be its length times its width, so let's make an equation to represent it's area.

$A=w(2w+6)$

We can also substitute 40 in for A as it's given in the question.

$40 = w(2w+6)$

Distributing w by multiplying it by both terms in the parentheses, we get

$40 = 2w^2+6w$

We can make the equation simpler by dividing both sides by 2.

$20 = w^2+3w$

Subtracting both sides by 20 will make the left-hand side 0.

$0=w^2+3w-20$

Now that we have put this quadratic equation into standard form (ax²+bx+c), we can find its solutions using the quadratic formula.

For reference, the quadratic formula is

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

In this case, a is 1, b is 3, and c is -20.

Substituting, we get

$w=\frac{-3\pm\sqrt{3^2-4(1)(-20)}}{2(1)}$

$w= \frac{-3\pm\sqrt{9+80}}{2}$

$w=\frac{-3+\sqrt{89}}{2}\hspace{0.1cm}or\hspace{0.1cm}\frac{-3-\sqrt{89}}{2}$

Since the second solution results in a negative number, it cannot be the length of w.

$w=\frac{-3+\sqrt{89}}{2}\approx3.217$

The width/breadth of the rectangle is 3.217 cm.

To calculate the length, let's substitute the width into the expression for the length:

$l=2(3.217)+6$

$l=12.434$

The length of this rectangle is 12.434 cm.

6 0

2 years ago

3.9 times 10 to the 20 power

Jobisdone [24]

3.9*10 = 39 then that to the 20 power is 6.626621133E31

Hope this helps!

5 0

3 years ago

Read 2 more answers

The temperature in the ice rink must stay below 50° F. This morning the temperature was 68°F. The ice rink runs a cooling device

german

The answer is h > 4.
Explanation: 68- 18=50
18/4=4.5. It is asking for below 50, and it had to cool for over 4 hours, which is >. I hope this helps. Please give me Brainliest.

6 0

3 years ago

Read 2 more answers

Which option is equivalent to log 7 - log 2? A. log 5 7 B. log O C. log 9 OD. log 72​

Which option is equivalent to log 7 - log 2? A. log 5 7 B. log O C. log 9 OD. log 72