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finlep [7]
3 years ago
13

joan spent half of her allowance going to the movies. she washed the family car and earned $6. what us he weekly allowance if sh

e ended up with $16
Mathematics
1 answer:
igor_vitrenko [27]3 years ago
8 0
Her allowance is $20. If she ended up with $16 then you subtract the $6 she earned from washing the car which leaves you with $10. Then you multiply the $10 by 2 since she spent half of her allowance at the movies. That gives you $20.
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The engineers designing the All Aboard Railroad between Boca Raton and Jupiter decide to create parallel tracks through this por
olga2289 [7]

Answer:

there are no signs between the x and y and constant

it could be

2x+5y=15

2x+5y=-15

-2x+5y=15

2x-5y=15

for ax+by=c, the equation of a line paralell to that is

ax+by=d where a=a, b=b, and c and d are constants

(for this answer, I'm going to use 2x+5y=15)

given 2x+5y=15, the equation of a line paralell to that is 2x+5y=d

to find d, subsitute the point (4,-2), basically put 4 in for x and -2 for y to get the constant

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the eqaution is 2x+5y=-2 (Only if the original equation is 2x+5y=-15

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5 0
3 years ago
Even numbers between 27 and 39
lianna [129]
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6 0
3 years ago
Find the equation of the line whose slope is -3 and which passes through the point (-5, 3)
nadezda [96]

Answer:

y=-3x-12

Step-by-step explanation:

Plug into equation y=mx+b

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3=15+b

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Add slope and y-intercept into base equation

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4 0
3 years ago
The mean and standard deviation of a normal distribution are 150 and 12 respectively. What percentage of values lie between:
Semenov [28]

Answer:

Step-by-step explanation:

Use a calculator with built-in statistical functions.  The function applying here is normcdf(, the "cumulative density function."  

(a) The percentage of values lying between 138 and 162 is

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(b)  Find norm(126, 174, 150,12):  0.945, or 94.5%

(c)  Find norm(126,162, 150,12);  0.819, or 81.9%

(d) Find norm(162, 174,150,12):  0.136, or 13.6%

8 0
3 years ago
Read 2 more answers
A new car depreciates at a rate of 15% per year. What is the expected value of a $25,000 car after 5 years (rounded to nearest w
geniusboy [140]
The answer to the question above is letter B. The new car depreciates at the rate of 15% per year. The expected value of the car after 5 years is $11,093. to explain the calculation of the answer :
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3 0
3 years ago
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