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UkoKoshka [18]
3 years ago
14

18.71 - 13.06 + 17.34

Mathematics
2 answers:
kirza4 [7]3 years ago
8 0

Answer:

22.99

Step-by-step explanation:

...........................

STALIN [3.7K]3 years ago
4 0

Answer:

22.99

Step-by-step explanation:

U could use a calculator u know or just line up the decimals and then subtract

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Helga is ordering five pounds of mixed nuts for a graduation party. The party budget allows $18 for the nuts. If peanuts are $2.
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Answer:

6 pounds of peanuts 1 pound of almonds

Step-by-step explanation:

6 pounds of peanuts at $2 a pound is $12 and that leaves $6 for a pound of almonds totaling out to $18

6 0
3 years ago
A fence must be built to enclose a rectangular area of 45 comma 000 ftsquared. Fencing material costs $ 3 per foot for the two s
Tatiana [17]

Answer:

150 feet by 300 feet.

Step-by-step explanation:

The fence is to enclose a rectangular area of 45,000 ft squared.

If the dimensions of the rectangle are x and y

Area of a rectangle = xy

  • xy=45000
  • x=\frac{45000}{y}

Perimeter of the Rectangle =2x+2y

Fencing material costs $ 3 per foot for the two sides facing north and south and ​$6 per foot for the other two sides.

  • Cost of Fencing, C=$(6*2x+3*2y)=$(12x+6y)

Substitute x=\frac{45000}{y} into the Cost to get C(y)

C=12x+6y

C(y)=12(\frac{45000}{y})+6y\\C(y)=\frac{540000+6y^2}{y}

The value at which the cost is least expensive is at the minimum point of C(y), when the derivative is zero.

C^{'}(y)=\dfrac{6y^2-540000}{y^2}

\dfrac{6y^2-540000}{y^2}=0\\6y^2-540000=0\\6y^2=540000\\y^2=\frac{540000}{6} =90000\\y=\sqrt{90000}=300

Recall,

x=\frac{45000}{y}=\frac{45000}{300}=150

Since x=150, y=300

The dimensions that will be least expensive to build is 150 feet by 300 feet.

6 0
3 years ago
3.
NNADVOKAT [17]

Answer:

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( it's like a half a cuboid)

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3 years ago
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(4,2) suppose its Point A

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8+7-1=14 is the answer correct <br> In the doubles minus one fact
Veronika [31]

Answer:

Yup if you have 8+8=14 then 8+8-1=-1

5 0
3 years ago
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