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4 years ago

What is the value of thi expression when d=3?

2 answers:

6 0

The answer is b because it is (7(3))2+10 so you would first start off with 7x3 which is 21 and then multiply that by 2 which is 42. You then add ten making it 52.

Leni [432]4 years ago

4 0

Answer:

Step-by-step explanation:

Givens

d = 3

Equation 7d^2 + 10 = ?

Solution

7*3*3 + 10

7*9 + 10

63 + 10 = 73

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Subtract 8 – 63.

Vsevolod [243]

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Step-by-step explanation:

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4 years ago

Holly can walk 3.75 miles per hour. At that same rate, how far can she walk in 2.5 hours?

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a_sh-v [17]

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Just cut it in half. <3

Step-by-step explanation:

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3 years ago

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masya89 [10]

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3 years ago

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The Boss Battle, Sole This Math Problem :)

AURORKA [14]

Answer:

x = -7, x = 1

Extraneous Solution: x = -7

Step-by-step explanation:

If |x - 5| is positive

$|x - 5| = 2(x + 1)\\\\x - 5 = 2x +2\\\\x - 7 = 2x\\\\-7 = x$

If |x - 5| is negative

$|x - 5| = 2(x + 1)\\\\-x + 5 = 2x + 2\\\\5 = 3x + 2\\\\3 = 3x\\\\x = 1$

Now, check for extraneous:

$|-7 - 5| = 2(-7 + 1)\\\\|-12| = 2(-6)\\\\|-12|=-12$

$|1-5|=2(1+1)\\\\|-4| = 2(2)\\\\4 = 4$

-7 is extraneous because the absolute value of |-12| ≠ -12

-Chetan K

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3 years ago