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Sophie [7]
3 years ago
7

when clark was 7 years old he had 22 rare coins. Each year Clark added 15 coins to hiss collection. Assuming Clark does not sell

or lose any coins, how old will Clark be when he has 577 coins?
Mathematics
1 answer:
AnnZ [28]3 years ago
6 0

Answer:

44 years old

Step-by-step explanation:

22 + 15x = 577....with x being the number of years

15x = 577 - 22

15x = 555

x = 555/15

x = 37......so in 37 years he will have them...and that would make Clark's age be (37 + 7) = 44 <===

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M= -3 b= -1 slope intercept form ​
Aliun [14]

Answer:

y = -3x-1

Step-by-step explanation:

all u had to do was plug it into y = mx+b

5 0
3 years ago
Mary has planned to save 25% of her weekly earning in savings account. She uses double number line as shown below to determine h
Bas_tet [7]

Answer:

<h2>$175 per week </h2>

Step-by-step explanation:

In this problem we are expected to calculate the amount Mary will save per week based on her 25% plan on her weekly earning of $700

hence we have to calculate 25% of $700 and that will be the answer to the problem

we have

weekly savings = (25/100)*700

weekly savings = 0.25*700

weekly savings= $175

<em>Hence Mary will save $175 per week if she follows the  25% plan  of her weekly earnings</em>

8 0
3 years ago
Im desperate like most of my question-
kvv77 [185]
<h3>Answer: 9.75 dollars</h3>

===========================================================

Explanation:

There are two ways to solve this problem.

Method 1:

35% = 35/100 = 0.35

35% of 15 = 0.35*15 = 5.25

So you save $5.25, which is the discount amount.

The sale price is 15 - 5.25 = 9.75 dollars

---------------

Method 2:

If you save 35%, then you still need to pay the remaining 65%

35% + 65% = 100%

The sale price is 65% of original price

sale price = 65% of original price

sale price = 0.65*15

sale price = 9.75 dollars

---------------

Extra info (optional section)

The benefit of method 2 is that we can chain multiple discounts together. Consider that on top of the 35% discount, the store then decides that members (people who pay monthly) will get an extra 10% off. The natural thinking is that the total discount is 35%+10% = 45% off, but that's not correct.

We can see this if we say that the original price is say $100 and 35% off would lead to a price of 0.65*100 = 65 dollars. Then an extra 10% off means we pay 90% of that new price (65 dollars) to get 0.90*65 = 58.50

As a shortcut, we can just multiply the values of 0.65*0.90 = 0.585

Then note how 100*0.585 = 58.50 showing us a fairly fast way to compute the final sale price even if multiple discounts are applied. This can be extended to more discounts. Again, we do not add the percentages when it comes to figuring out how much the total discount percentage would be.

Since the item was $100 but now it's 58.50, this means we saved 100-58.50 = 41.50 dollars. The discount is therefore 41.50/100 = 41.50% which is close to the 45% calculated earlier, but not quite there.

7 0
3 years ago
Read 2 more answers
Solve the equation 15p2 + 7p − 4 = 0 by completing the square.
natulia [17]

Answer:

p=0 or p=-7/15

Step-by-step explanation:

15p2+7p=0

p(15p+7)=0

p=0 or 15p+7=0

4 0
2 years ago
Evaluate the expression when m= -8 and n = 4<br> 5-m-n
borishaifa [10]

Answer:

9

Step-by-step explanation:

5-(-8)-4=9

Hope this helps!

7 0
3 years ago
Read 2 more answers
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