3 years ago

Marcus said the product of 78 × 134 is 94. How can you tell that his answer is wrong?

Mathematics

1 answer:

QveST [7]3 years ago

7 0

You can use estimation.

80×130=10,400

Clearly 10,400 and 94 are way off.

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The domain and range

ziro4ka [17]

Answer:

Domain = (-∞, 1) ∪ (1, ∞)

Range = (-∞, 0) ∪ (0, ∞).

Step-by-step explanation:

Domain is all real x except x = 1.

Range is all f(x) except when x = 1.

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3 years ago

Find the value of c such that the equation x^2 - c = 0 has 12 and –12 as solutions.

Sonbull [250]

Answer:

c=144

Step-by-step explanation:

The given equation is $x^2-c=0$

If this equation has 12 and -12 as roots, then the roots must satisfy the equation.

We substitute x=12 to obtain

$12^2-c=0$

$144-c=0$

Solve for c to get:

$144=c$

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3 years ago

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stira [4]

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3 years ago

For which values of x is the inequality 2(1/x)>8 true?

grigory [225]

If the value of x be 0.2 the inequality be true

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3 years ago

Granola costs $2.79 for 16.4 ounces. At this rate how much does 25 ounces of granola costs? Round to the nearest cent .

exis [7]

Answer:

$4.25

Step-by-step explanation:

Ratio:

2.79:16.4 = x:25

16.4 × x

2.79 × 25

Cross multiply: 16.4x = 69.75

Then divide: 69.75 ÷ 16.4 = $4.25

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3 years ago