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3 years ago

Can someone answer the highlighted question!!! PLEASE

Mathematics

1 answer:

g100num [7]3 years ago

3 0

The equation in slope intercept form is:

$y=-3x+9$

A line parallel to this would have the same slope, which means our line that passes through the point (0,-4) has a slope of -3. We now have to plug in 0 as our x and -4 as our y in y=-3x+b so:

$-4=0x+b \implies \\ -4=b$

Our equation is then y=-3x-b

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It takes mike 18 minutes to finish reading 4 pages of a book. How long does it take for him to finish reading 30 pages??

VMariaS [17]

18/4 = x/30
18x30 /4 = 135 minutes or 2 hours and 15 minutes.

6 0

3 years ago

Read 2 more answers

The cost of a High Definition television now averages $700, but the cost is decreasing about 15% per year. In how many years wil

Roman55 [17]

Answer: 7.7 years

Step-by-step explanation:

Given

The cost of HD TV is $700 and it is decreasing at the rate of 15% per year

After one year it becomes

$\Rightarrow 700-700\times 15\%\\\Rightarrow 700(1-0.15)$

after 2 year it becomes

$\Rightarrow 700(1-0.15)-700(1-0.15)\times 15\%\\\Rightarrow 700(1-0.15)(1-0.15)\\\Rightarrow 700(1-0.15)^2$

Suppose, after x years it becomes $200

$\Rightarrow 200=700(1-0.15)^x\\\\\Rightarrow \dfrac{2}{7}=0.85^x\\\\\text{Taking log both sides}\\\\\Rightarrow x=\dfrac{\ln (\frac{2}{7})}{\ln (0.85)}\\\\\Rightarrow x=7.7\ \text{years}$

Thus, it takes 7.7 years for the cost to come under $200.

3 0

3 years ago

PLease help me this is due a 9:00!!!!!!!!!!!!!!!!!!!!!!!!!!!

Semmy [17]

Answer:

may solver po sa brainly

5 0

3 years ago

b. You have saved $15,000 for a down payment. What is the max you can spend (max house price)? (4 points)

In-s [12.5K]

Answer:

maybe like 5k

Step-by-step explanation:

6 0

3 years ago

How many times dose 18 go into 170

Leokris [45]

I think it is 10 because 18×10=180 but it is close hope this helps

7 0

3 years ago