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3 years ago

7

(4,4) and (-2,-2) round to the nearest tenth

1 answer:

Oliga [24]3 years ago

5 0

Both numbers are zero (0,0)

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How can I solve for the logarithm?

Sergio039 [100]

$\bf 12^{2x-8}=15\\\\
-----------------------------\\\\
log_{{ a}}\left( x^{{ b}} \right)\implies {{ b}}\cdot log_{{ a}}(x)\impliedby thus\\\\
-----------------------------\\\\
log\left( 12^{2x-8} \right)=log(15)\implies (2x-8)log(12)=log(15)
\\\\\\
2x-8=\cfrac{log(15)}{log(12)}\implies 2x=\cfrac{log(15)}{log(12)}+8\implies 
x=\cfrac{\frac{log(15)}{log(12)}+8}{2}$

7 0

3 years ago

Write 70 20 in lowest terms.

Harlamova29_29 [7]

Answer: Find the GCD (or HCF) of numerator and denominator. GCD of 70 and 20 is 10.

70 ÷ 1020 ÷ 10.

Reduced fraction: 72. Therefore, 70/20 simplified is 7/2.

5 0

3 years ago

4x2 + 4x - 2y2 +3y, when x is equal to -2 and y is equal to 3?

ladessa [460]

Answer

-1

Step-by-step explanation:

Just plug in the numbers.

5 0

3 years ago

Read 2 more answers

X+y+z=1<br> X-2y+3z=2<br> X+z-5=0

serious [3.7K]

x+y+z=1

x=1/(y+z)

1/(y+z)-2y+3z=2

1-2y²-2yz+3yz+3z²=2(y+z)

(1-2y²+yz+3z²)/2=y+z

z=(1-2y²+yz+3z²)/2 -y/1

z=(1-2y²+yz+3z²-2y)/2

8 0

3 years ago

Jane’s cell phone plan is $40 each month plus $0.15 per minute for each minute over 200 minutes of call time. Janes cell phone b

san4es73 [151]

Answer:

The equation is $40+0.15m = 58.00$ whose solution is $m =120\:minutes.$

Step-by-step explanation:

Let us call $m$ the number of minutes the phone is used over 200 minutes, then we have

$\boxed{40+0.15m = 58.00}$ <em>(this says monthly bill of $40 plus the cost of phone usage over 200 minutes must equal $58 )</em>

This equation can be used to solve for $m$ u as follows:

$0.15m = 58-40$

$m = \dfrac{18}{0.15}$

$\boxed{m = 120\:minutes}$

8 0

3 years ago