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nydimaria [60]
3 years ago
10

Seven days ago, the gas tank on Rosa’s vehicle was filled with 25 gallons of gasoline. Today there are 11 gallons of gasoline. W

hat integer represents the change of the gasoline in the past seven days
Mathematics
1 answer:
uysha [10]3 years ago
6 0

Answer:

-14

Step-by-step explanation:

You can find the amount of change by subtracting the original amount from the new amount.

11 - 25 = -14

Overall: Appropriate answer is, -14.

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Tyrone's age is 2 years less than 4 times his younger sister's age. If his younger sister's age is b years, which of the followi
drek231 [11]

Answer:

Four times his sister's age would be 4b.   his age is two years less, so we need to subtract 2.

put together, this is 4b - 2.

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3 years ago
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The heights of 500 students at a local school were recorded and found to be approximated by the normal curve below. Which answer
larisa [96]

Answer:

c

Step-by-step explanation:

5 0
3 years ago
The measured weights of 1,000 men in a certain village follow a normal distribution with a mean of 150 pounds and a standard dev
earnstyle [38]
Z = (X-Mean)/SD 
<span>z1 = (165 - 150)/15 = +1 </span>
<span>z2 = (135 - 150)/15 = - 1 </span>
<span>According to the Empirical Rule 68-95-99.7 </span>
<span>Mean +/- 1SD covers 68% of the values </span>
<span>100% - 68% = 32% </span>
<span>The remaining 32% is equally distributed below z = - 1 and z = +1 </span>
<span>32%/2 = 16% 
</span>
<span>Therefore, 
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<span>a) Number of men weighing more than 165 pounds = 16% of 1000 = 160 </span>
<span>b) Number of men weighing less than 135 pounds = 16% of 1000 = 160</span>
4 0
3 years ago
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The Johnsons bought 3 burrito meals and 4 taco meals for $48. The Sloans bought 6 burrito meals and 2 taco meals for $60. How mu
faust18 [17]

Answer:

Each burrito meal cost 8$

Each taco meal cost 6$

Step-by-step explanation:

Johnsons= 3b +4t =48

Sloans= 6b+2t=60

multiple johnsons by -2

so, now the johnsons are -6b+-8t=-96

add that to the sloans so, -6b+6b-8t+2t=-96+60

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divide each side by -6 and you will get t=6

then you can pick either formula, lets say sloans this time

so, 6b + 2(6)=60 so, 6b+12=60, subtract 12 from each side, to get 48

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7 0
4 years ago
Find the sum of 5x + 6 and -11x - 9
Setler79 [48]
-6x - 3
Step-by-step-explanation:

3 0
3 years ago
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