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s344n2d4d5 [400]
3 years ago
13

brianna practices the panio 30 minutes each day write an expression for the number of hours she practises in d days

Mathematics
1 answer:
Illusion [34]3 years ago
8 0
X=hours practiced
d=days practiced

x=1/2(d)
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he amount of money left in Alma’s bank account is expressed by the linear equation y = -27x + 577, where x represents the number
kow [346]

Answer:

After 16 weeks she will have 145 dollars left in her account.

Step-by-step explanation:

since 145 represents the amount of money in her account we will substitute that for "y" and solve for "x"

145=-27x+577

145-577=-27x

-432=-27x

-432/-27= -27x/-27

16=x


3 0
4 years ago
Dorothy and Rosanne are baking cookies for a party. Working alone, Rosanne can finish the cookies in 6 hours. Dorothy can finish
garik1379 [7]

Answer:

It will take them 3.43 hours.

Step-by-step explanation:

Let T denote the total cookies that need to be cocked. Observe that:

  1. If Rosanne finishes the cookies in 6 hours, that means that she can make \frac{T}{6} cookies per hour.
  2. If Dorothy finishes the cookies in 8 hours, that means that she can make \frac{T}{8} cookies per hour.

Then, by 1) and 2), if they work together would we able to make

\frac{T}{6}+\frac{T}{8}=\frac{8T+6T}{48}=\frac{14}{48}T=\frac{7}{24}T

cookies per hour.

Therefore, in order to finish the T cookies they will need \frac{24}{7}\approx3.43 hours

3 0
4 years ago
Which of the following describes a square root of 41?
andreev551 [17]

Answer:

the answer is b between 6 and 7

Step-by-step explanation:

i say this because the square root of 41 is 6.4031.

6.4031 is in between 6 and 7.

hope this helps :)

6 0
3 years ago
What is 7.47 divided by 3
hram777 [196]
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3 years ago
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