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Nutka1998 [239]

3 years ago

8

After buying a jacket that cost $47,Marilyn had $6 left in her wallet.Write and solve a subtraction equation to find the amount

of money Marilyn in her wallet before she bought the jacket

1 answer:

ycow [4]3 years ago

7 0

Answer:$53

Step-by-step explanation:

If she bought a $47 and had $6 left how much did she have before she bought the jacket?

?-$47=$6

$47+$6=$53

$53-$47=$6

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Jessica has a rectangular poster. The poster is 1.8 meters long and 1.5 meters wide. What is the area of the poster in square ce

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O centimetro quadrado do cartas é 2.70

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3 years ago

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The data show the average monthly temperatures for two cities over a 6-month period. City 1: {20, 24, 40, 63, 76, 89} City 2: {4

Mrac [35]

Answer:

The MAD of city 2 is <u>less than</u> the MAD for city 1, which means the average monthly temperature of city 2 vary <u>less than</u> the average monthly temperatures for City 1.

Step-by-step explanation:

For comparing the mean absolute deviations of both data sets we have to calculate the mean absolute deviation for both data sets first,

So for city 1:

$Mean = x1 = \frac{20+24+40+63+76+89}{6}$

$x1 = \frac{312}{6}$

$x1 = 52$

Now to calculate the mean deviations mean will be subtracted from each data value. (Note: The minus sign is ignored as the deviation is the distance of value from the mean and it cannot be negative. For this purpose absolute is used)

$20-52 = -32=32\\24-52=-28=28\\40-52=-12=12\\63-52=11\\76-52=24\\89-52=37$

The deviations will be added then. $Mean Absolute Deviation = \frac{32+28+12+11+24+37}{6} \\=\frac{144}{6}\\=24$

So the mean absolute deviation for city 1 is 24 ..

For city 2:

$Mean = x2 = \frac{41+50+58+62+72+83}{6}$

$x2 = \frac{366}{6}$

$x2 = 61$

Now to calculate the mean deviations mean will be subtracted from each data value. (Note: The minus sign is ignored)

$41-61=-20=20\\50-61=-11=11\\58-61=-3=3\\62-61=1\\72-61=11\\83-61=22$

The deviations will be added then. $Mean Absolute Deviation = \frac{20+11+3+1+11+22}{6} \\=\frac{68}{6}\\=11.33$

So the MAD for city 2 is 11.33 ..

So,

The MAD of city 2 is <u>less than</u> the MAD for city 1, which means the average monthly temperature of city 2 vary <u>less than</u> the average monthly temperatures for City 1.

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3 years ago

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A rectangular pool is 30 1/3 feet long and 12 1/2 feet wide what is the area of the pool

Lilit [14]

Area=l*b = 379.16feet^2

8 0

4 years ago

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I need help pls a s a p

jonny [76]

Answer:

could it be as simple as x+1=y or y-1=x?

Step-by-step explanation:

y is all of x plus one more.....

7 0

3 years ago

Solve for x.<br><br> Help please

MAVERICK [17]

X = 10

The triangles are similar by SAS, so we can set up a proportion of their sides.

9/(33-9) = 12/(3x+2)
9/24 = 12/3x+2

Reduce
3/8 = 12/3x+2

Cross multiply
3(3x+2) = 12*8

Distribute and multiply
9x + 6 = 96

Subtract 6
9x = 90

Divide by 9
x = 10

Check:
9/24 = 12/3x+2
9/24 = 12/3*10 + 2
9/24 = 12/30 + 2
9/24 = 12/32
3/8 = 3/8 :)

4 0

3 years ago