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3 years ago

Uw

Mathematics

1 answer:

Whitepunk [10]3 years ago

3 0

Answer:

ITS THE SECOND ONE

Step-by-step explanation:

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The scale drawing represents Kim’s living room. She wants to put new baseboards on the walls of the room. If the scale is 2 cm:1

Serga [27]

The answer is B, because if you draw the baseboards on the scale drawing, you'll get nineteen baseboards. 19 x 4,19 = 79,61

5 0

3 years ago

Suppose the population of a certain city is 3031 thousand. It is expected to decrease to 2246 thousand in 50 years. Find the per

Kipish [7]

Answer:

The rate at which the population decrease is 59.8 %

Step-by-step explanation:

Given as :

The population of city = 30,31,000

Now The population of city decrease to 22,46,000

The time period in which population decrease is 50 years

Let the percentage rate of decrease = R%

So,

Final population = initial population × $(1-\frac{Rate}{100})^{Time}$

Or, 22,46,000 = 30,31,000 × $(1-\frac{Rate}{100})^{50}$

Or, $\frac{2246000}{3031000}$ = $(1-\frac{Rate}{100})^{50}$

Or, $\frac{2246}{3031}$ = $(1-\frac{Rate}{100})^{50}$

$(\frac{2246}{3031})^{\frac{1}{50}}$ = $( 1-\frac{Rate}{100})$

So , 0.99402 = $( 1-\frac{Rate}{100})$

Or, $\frac{Rate}{100}$ = 1 - 0.99402

So, Rate = $5.98\times 10^{-3}$ × 100

Or, Rate = 0.598 = 59.8 %

Hence The rate at which the population decrease is 59.8 % Answer

4 0

3 years ago

Help asap<br> x2 + 3x<br><br> x = 1.7

Alex777 [14]

Answer:

8.5

Step-by-step explanation:

Our current equation is:

x2 + 3x.

Let's replace all the x with 1.7.

1.7(2) + 3(1.7)

Let's solve this new equation normally, as if the 1.7 was always there.

1.7(2) = 3.4

3(1.7) = 5.1

Now, let's add both the products.

5.1 + 3.4 = 8.7

Therefore, we can conclude the answer is 8.7.

Need more assistance? Send me a friend request!

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Have a great day. :)

4 0

3 years ago

If you sleep 7 hours every night how many hours are you AWAKE in a year?

Alinara [238K]

Answer:

Step-by-step explanation:

24 - 7 = 17.

If there are 365 days in a year, sometimes 366, you would multiply 17 by 365 or 366.

17 x 365 = 6205

17 x 366 = 6222.

if 3/4 years aren't leap year, then there answer would be B, 365.

Please mark brainliest! I had to make a new account. Hope this helps! <3

6 0

3 years ago

A member has a monthly membership for $480 per month. They also have a 25% discount on top of the monthly price and have paid fo

QveST [7]

Answer:

$72

Step-by-step explanation:

For the first month, they got a 25% discount, aka $120 off. Now that it's changed to 40%, you need to find how much 40% of $480 is.

480 x .4 = 192

40% of $480 is $192. The next step is to find the difference between $192 and $120.

192 - 120 = 72

Therefore, you need to give them of refund of $72.

8 0

3 years ago