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2 years ago

Use the work shown below to solve.

Mathematics

2 answers:

Katyanochek1 [597]2 years ago

4 0

Answer:

please I don't know

Step-by-step explanation:

please I don't know

please another question

Anika [276]2 years ago

3 0

Answer:

Step-by-step explanation:

-4

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What is the solution to the system x+ y =4 and 2x - y = -1

Lostsunrise [7]

Answer:

Step-by-step explanation:

hello :

the system is : x+ y =4 ...(*)

2x - y = -1...(**)

add(*) and (**) : 3x=3 so : x=1

put this value into (*) : 1+y=4 so : y=3

one solution : (1 , 3)

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2 years ago

The formula p=8n-30 gives the profit p when a number of items n are each sold at $8 and expenses totaling $30 dollars are subtra

andrew11 [14]

Answer:

the answers is n=25. hope this helps

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2 years ago

I AM STUCK!!! PLEASE HELP!!!!!

mixer [17]

A = 0.1
B = 50.9

These are rounded to the nearest tenth

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2 years ago

Simplify the expression below and write it as a single logarithm:

OLEGan [10]

The simplification of 3log(x + 4) – 2log(x – 7) + 5log(x - 2) - log(x^2) is $\log \left(\frac{(x+4)^{3} \times(x-2)^{5}}{(x-7)^{2} \times x^{2}}\right)$

<u>Solution:</u>

Given, expression is $3 \log (x+4)-2 \log (x-7)+5 \log (x-2)-\log \left(x^{2}\right)$

We have to write in as single logarithm by simplifying it.

Now, take the given expression.

$\rightarrow 3 \log (x+4)-2 \log (x-7)+5 \log (x-2)-\log \left(x^{2}\right)$

Rearranging the terms we get,

$\left.\rightarrow 3 \log (x+4)+5 \log (x-2)-2 \log (x-7)+\log \left(x^{2}\right)\right)$

$\text { since a } \times \log b=\log \left(b^{a}\right)$

$\rightarrow \log (x+4)^{3}+\log (x-2)^{5}-\left(\log (x-7)^{2}+\log \left(x^{2}\right)\right)$

$\text { We know that } \log a \times \log b=\log a b$

$\rightarrow \log \left((x+4)^{3} \times(x-2)^{5}\right)-\left(\log \left((x-7)^{2} \times\left(x^{2}\right)\right)\right.$

$\text { We know that } \log a-\log b=\log \frac{a}{b}$

$\rightarrow \log \left(\frac{(x+4)^{3} \times(x-2)^{5}}{(x-7)^{2} \times x^{2}}\right)$

Hence, the simplified form $\rightarrow \log \left(\frac{(x+4)^{3} \times(x-2)^{5}}{(x-7)^{2} \times x^{2}}\right)$

4 0

2 years ago

Read 2 more answers

Johnny drove 300 miles to meet his mother on Tuesday. On Thursday, he drove 120 miles to meet friends at an amusement park. On S

skad [1K]

Answer: 60 mph

Step-by-step explanation:

300+120+420=840

840/14=60

3 0

2 years ago