help! :)

- anonymous

help! :)

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- anonymous

@Vocaloid

- anonymous

Preston is making cookies. He has fraction 4 over 5 cup of flour in a bag. He then used two fraction 1 over 10 cup scoops of flour for his recipe. Which of these best explains the amount of flour left in the bag?
fraction 6 over 10, because fraction 4 over 5 minus 2 times fraction 1 over 10 equals fraction 4 over 5 minus fraction 3 over 10
fraction 5 over 10, because fraction 4 over 5 minus 2 times fraction 1 over 10 equals fraction 4 over 5 minus fraction 3 over 10
fraction 6 over 10, because fraction 4 over 5 minus 2 times fraction 1 over 10 equals fraction 4 over 5 minus fraction 2 over 10
fraction 5 over 10, because fraction 3 over 4 minus 2 times fraction 1 over 8 equals fraction 3 over 4 minus fraction 3 over 8

- Vocaloid

amount in bag - amount used

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## More answers

- anonymous

b?

- Vocaloid

amount in bag: 4/5
amount used: 2/10

- anonymous

c?

- Vocaloid

yes

- anonymous

Simplify (9.5)(−2)(−5).
950
95
−95
−950

- Vocaloid

use a calculator

- anonymous

b

- Vocaloid

good

- anonymous

)Which fraction is equivalent to negative 1 over 6?
6 over negative 1
negative 6 over 1
negative 6 over negative 1
1 over negative 6

- anonymous

D?

- anonymous

@Vocaloid

- Vocaloid

yes

- anonymous

Steve set up a business making friendship bracelets. He earned $70 in January. He is projected to earn 120% more in February. How much is Steve projected to make in February?
$84
$98
$154
$190

- anonymous

A?

- Vocaloid

this is a tricky question
"120% more" means 70 + (1.20)*(70)

- anonymous

The total temperature change over 5 days in Pretty City was −15 degrees Celsius.
What was the average temperature change each day?
−3 degrees Celsius
3 degrees Celsius
−10 degrees Celsius
10 degrees Celsius

- anonymous

At Chrissy's Clothes Warehouse, it takes fraction 2 over 5 of a day to complete fraction 1 over 10 of an order of t-shirts. At this rate, how long will it take to complete the entire order of t-shirts?
4 days
Mixed number 10 and 2 over 5 days
Mixed number 12 and 1 over 2 days
25 days

- anonymous

@Vocaloid

- Vocaloid

(2/5)*10 = ?

- anonymous

4

- Vocaloid

good so 4 days

- anonymous

The temperature is changing every day by negative 7 over 18 degree Fahrenheit. What will be the change in the temperature after 3 days?
21 over 6 degrees Fahrenheit
negative 21 over 6 degrees Fahrenheit
negative 7 over 6 degree Fahrenheit
7 over 6 degree Fahrenheit

- anonymous

@Vocaloid

- anonymous

@Vocaloid

- anonymous

@Vocaloid

- Vocaloid

temperature change * number of days

- anonymous

b? @Vocaloid

- Vocaloid

nope, check your math again

- anonymous

c?

- anonymous

@Vocaloid

- Vocaloid

good

- anonymous

The graph below shows the fine that a college student pays to the library based on the number of minutes a loaner laptop is overdue:
A graph is shown. The values on the x axis are 0, 2, 4, 6, 8. The values on the y axis are 0, 0.70, 1.40, 2.10, 2.80. Points are shown on ordered pairs 0, 0 and 2, 0.70 and 4, 1.40 and 6, 2.10. These points are joined by a line. The label on the x axis is Minutes Overdue. The title on the y axis is Fine.
Which statement best describes the point (0, 0) on the graph?
No fine is paid if the laptop is returned 1 minute past the time it is due.
A fine of $0.35 is paid if the laptop is returned at the time it is due.
A fine of $0.35 is paid if the laptop is returned 1 minute past the time it is due.
No fine is paid if the laptop is returned exactly at the time at which it is due.

- Vocaloid

hint: if x = 0, then the laptop was returned on time

- anonymous

d?

- anonymous

d? @Vocaloid

- Vocaloid

yes

- anonymous

A matinee movie ticket costs $6.50 per child. Which equation can be used to calculate the matinee ticket price, M, for n children?
M = 6.50n
n = 6.50M
M equals 6.50 over n
n equals 6.50 over M

- anonymous

@Vocaloid

- Vocaloid

price*n

- anonymous

A? @Vocaloid

- Vocaloid

yes

- anonymous

@Vocaloid

##### 1 Attachment

- Vocaloid

starting money + (-sharpener) + (-paper)

- anonymous

d?

- Vocaloid

yeah

- anonymous

Which expression is equivalent to 2(m − 4) + 1?
2m − 7
2m − 3
2m + 9
2m + 10

- Vocaloid

any ideas?

- anonymous

b?

- Vocaloid

nope
start by distributing the 2

- anonymous

2m

- Vocaloid

don't forget the -4
2*(-4) = ?

- anonymous

-8

- Vocaloid

good, that gives us
2m - 8 + 1 = ?

- anonymous

c?

- Vocaloid

-8 + 1 = ?

- anonymous

-9

- Vocaloid

try again

- Vocaloid

use a calculator if you are unsure

- anonymous

-7

- Vocaloid

good

- anonymous

A?

- Vocaloid

yeah

- anonymous

@Vocaloid

##### 1 Attachment

- Vocaloid

for each school, divide (number of kids who like tacos)/(total number of kid) and see which school has the result

- anonymous

@Vocaloid d?

- anonymous

@Vocaloid

- Vocaloid

yes great.

- anonymous

Ruiz needs to buy a countertop for a kitchen. He calculated the area to be 16 square feet. The actual area is 15.4 square feet. What is Ruiz's percentage error?
0.6%
3.75%
3.9%
6%
@Vocaloid

- Vocaloid

100*(calculated-actual)/(actual)

- anonymous

b? @Vocaloid

- anonymous

@Vocaloid

- Vocaloid

check your math again

- anonymous

C?

- Vocaloid

yup

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