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3 years ago

14

4. There are seven days in a week. How many days are there in 16 weeks?

1 answer:

lesya692 [45]3 years ago

8 0

Answer:

There are 112 days in 16 weeks

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Which is a logical conclusion based on the given information?

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Step-by-step explanation:

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3 years ago

How much of an alloy that is copper should be mixed with ounces of an alloy that is copper in order to get an alloy that is cop

tekilochka [14]

Answer:

1r + 8(400) = 3(r+400)

1r + 320 = 3r + 120

2r = 200

r = 200 / 2 = 1000

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100 + 320 = 420

Step-by-step explanation:

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Find the magnitude of angle A if cos A = 0.5

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3 years ago

Consider the quadratic equation x squared = 4x - 5. how many solutions does the equation have?

snow_lady [41]

Answer:

The quadratic equation has two complex solutions

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}=4x-5$

Equate to cero

$x^{2}-4x+5=0$

so

$a=1\\b=-4\\c=5$

substitute in the formula

$x=\frac{4(+/-)\sqrt{-4^{2}-4(1)(5)}} {2(1)}$

$x=\frac{4(+/-)\sqrt{16-20}} {2}$

$x=\frac{4(+/-)\sqrt{-4}} {2}$

Remember that

$i^{2}=-1$

so

$x=\frac{4(+/-)2i} {2}$

$x=2(+/-)i$

therefore

The quadratic equation has two complex solutions

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3 years ago

The bus trip to Langdale runs every Friday. Emma buys the tickets on the 19th June. She and her friend want to go on the next av

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Friday the 23rd is the next available trip

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