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Klio2033 [76]
3 years ago
12

I need help with these questions.

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
7 0

Answer:

25%

Step-by-step explanation:

percent change = (new number - old number)/(old number) * 100%

Here, new number = 30, and old number = 24.

percent change = (30 - 24)/(24) * 100%

percent change = 6/24 * 100%

percent change = 0.25 * 100%

percent change = 25%

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In Store A, a book that regularly sells for $24.99 is on sale at 15% off. In Store B the same book regularly sells for $27.99 an
stealth61 [152]
Answer: Store B


Step by Step
divide the the normal price of the book by four to get the amount of the book on sale in store B which is $21. To get the answer for Store A divide the normal price of the book by ten then divide the amount you get by 2 and add the two amounts up to get the the amount of the book on sale which is $21.26
8 0
3 years ago
Write a bracket to make the calculation correct <br><br> 4 + 1 *7-2 =25
Lelechka [254]

Answer:

[4 + 1] *[7-2] =25

Step-by-step explanation:

[4 + 1] *[7-2] =25

We need to get to 25

What makes 25

5*5

4+1 =5

7-2 =5

5*5 =25

So we need brackets around 4+1 and around 7-2

6 0
3 years ago
Read 2 more answers
23 please help thanks no link or i will report
NARA [144]

how many students got 90 or less = 14

how many students got more than 90 = 11

3 more students got 90 or less so answers is D. 3

please mark brainliest

4 0
3 years ago
v = 20.8x^2 - 458.3x + 3,500 represents the value of a car from 1964 to 2002. What year did the car have the least value? (x= 0
Karo-lina-s [1.5K]
See the picture for all detail, I have done it by hand.
Few important steps;
-Take the first derivative
-Put it equal to zero
-you get the x value which is equal to 11
-Now for the check that x=11 is the least value or not, take the second derivative
-As, the 2nd derivative is positive so it is the least value

As x=0 in 1964 add 11 to it so at x=11 we get 1975 so in this year car have least value

7 0
4 years ago
Chloe spent $69 and now has no money left. She had before her purchase. She had $ before her purchase. can you please help me wi
max2010maxim [7]

Answer:

$69

Step-by-step explanation:

Given

Purchase = \$69

Amount\ Left = \$0

Required

Determine the cash before purchase

To get the her amount before the purchase, we simply add both given parameters together.

This is done as follows;

Amount = Amount Left + Purchase

Substitute 0 for Amount Left and 60 for Purchase

Amount = \$0 + \$69

Amount = \$69

<em>Hence, she had $69 before the purchase</em>

6 0
3 years ago
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