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Tpy6a [65]
2 years ago
11

7th grade math - sales tax (please help)

Mathematics
1 answer:
arlik [135]2 years ago
6 0

Answer: $6.67

Step-by-step explanation: Divide 18 by 2.7 which would be $6.67.

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Write the following inequality in slope-intercept form. −6x + 2y ≤ 42
zubka84 [21]
Add the 6x to both sides. Then divide both sides by 2 to get y by itself.

y <= 6x + 42

Note: if it were a -2y, you’d have to flip the inequality sign when dividing by that negative 2.

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7 0
3 years ago
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Answer to <br> 5 1/4 - ( 3 - 1 1/6 )
ycow [4]

Answer

41/12

Step-by-step explanation:

convert mixed numbers into improper fractions 21/4-(3-7/6)

calculate 21/4 - 11/6

subtract fractions 41/12

3 0
3 years ago
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Nasreen was babysitting her cousin on Saturday.
GarryVolchara [31]

Answer:

$25.75

Step-by-step explanation:

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5 0
3 years ago
For the following geometric sequence find the explict formula -1 ,3, -9.
Afina-wow [57]

Answer:

-1 x -3^{n-1}

Hope this helps

Step-by-step explanation:

5 0
3 years ago
How many of the numbers from 10 through 97 have the sum of their digits equal to a perfect​ square?
Anarel [89]
Perfect squares are:
1,4,9,16,25,36,49,64,81,100,....

the sum of the digits of our biggest number is 16 so any perfect square bigger than 16 doesn't work for us
1-
1+0=1 so any number containing the digits will work(keep in mind we only will look into whole numbers because digits can't be negative or have fractions or be irrational)
thereful 10 works for our category
2-
0+4=4
1+3=4
2+2=4
22 13 31 and 40 will work two
3-
0+9
1+8
2+7
3+6
4+5
90 18 81 27 72 36 63 45 54
4-
0+16
1+15
2+14
3+13
4+12
5+11
6+10
7+9
8+8
79 97 88

so our set of numbers contain:
10 22 13 31 40 90 18 81 27 72 36 63 45 54 79 97 88
3 0
3 years ago
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