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koban [17]
3 years ago
15

7th grade work (: haha

Mathematics
1 answer:
Ray Of Light [21]3 years ago
5 0

Answer:

Option B -(-8\frac{1}{4})

Step-by-step explanation:

we know that

The opposite or additive inverse of a number a is the number that, when added to a, yields zero.

so

The opposite of a is -a

In this problem we have

8\frac{1}{4}

therefore

The opposite is

-8\frac{1}{4}

and the opposite of the opposite is

-(-8\frac{1}{4})

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Furkat [3]
Membership is discounted $2 for first month
c=cost of one month
d=discount=$2
x=# of months
xc - 2= total cost
x for 1 month is 1, c is always 12, -2 is constant
1 x(12) - 2=10 for first month
8 months
8c -2=total cost for 8 months
8 x 12 - 2= 94 for 8 months

5 0
3 years ago
What is the measurement of each side of the perimeter is 94?
sveticcg [70]
2a+1 + 3a+2 +5a-9 you would start by combining like terms
2a+3a+5a= 10a
1+2-9= -6
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then subtract 94-6=88
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8 0
3 years ago
the first three terms of an arithmetic progression is (x + 1), (4 x - 2) and 6 x - 3 if the last term is 18 find the value of x​
lbvjy [14]

Answer:

2

Step-by-step explanation:

<u>Since it is AP, the common difference is same for any term:</u>

  • (4x - 2) - (x + 1) = (6x - 3) - (4x - 2)
  • 3x - 3 = 2x -1
  • 3x - 2x = 3 - 1
  • x= 2

<u>The first 3 terms are:</u>

  • 3, 6, 9

<u>Since the last term is 18, it means this AP has 6 terms:</u>

  • {3, 6, 9, 12, 15, 18}

<u>Answer: </u>as we need to find the value of x only, it is = 2

6 0
3 years ago
sarah meeham blends coffee for tasti delight. she needs to prepare 160 pounds of blended coffee beans selling for $4.97 per poun
Viefleur [7K]
Given:
h = high quality bean ; costs 6 per pound
c = cheaper bean ; costs 3.25 per pound

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h + c = 160

6h + 3.25c = 160(4.97)
6h + 3.25c = 795.20

h = 160 - c

6(160-c) + 3.25c = 795.20
960 - 6c + 3.25c = 795.20
- 2.75c = 795.20 - 960 
- 2.75c = -164.80
c = - 164.80 / -2.75
c = 59.92 or 60 pounds

h = 160 - c
h = 160 - 60 
h = 100 pounds

Sarah must blend 100 pounds of high quality bean and 60 pounds of cheaper bean.
3 0
3 years ago
Evaluate y(-3) - 7x<br> When x = 8, y = 2
VLD [36.1K]

Answer:

The answer to the question provided is -62.

6 0
2 years ago
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