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GenaCL600 [577]
3 years ago
9

Use the order of operations to evaluate this expression: 7 + (5 – 9)2 + 3(16 ÷ 8).

Mathematics
1 answer:
Jet001 [13]3 years ago
3 0

Remember to use PEMDAS when solving.

=  7 + (5 – 9)2 + 3(16 ÷ 8)

= 7 + (-4)2 + 3(2)

= 7 + (-8) + 6

= -1 + 6

= 5

Best of Luck!

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Evaluate the expression 3.5x when x is 2.
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Answer:

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Step-by-step explanation:

Since x= 2 you would plug it in 3.5 times 2 = 7

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icang [17]

Answer:

The height of the new cones will be 16.5 inches.

Step-by-step explanation:

We know that,

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V_2=\frac{1}{3}\pi (44)^2(H)

According to the question,

V_2=V_1

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7 0
3 years ago
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ehidna [41]

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Perimeter of the ΔDEF = 10.6 cm

Step-by-step explanation:

The given question is incomplete; here is the complete question with attachment enclosed with the answer.

D, E, and F are the midpoints of the sides AB, BC, and CA respectively. If AB = 8 cm, BC = 7.2 cm and AC = 6 cm, then find the perimeter of ΔDEF.

By the midpoint theorem of the triangle,

Since D, E, F are the midpoints of the sides AB, BC and CA respectively.

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