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3 years ago

10

Greyson's mom used 4 out of 12 eggs to make pancakes. Then she used 3 out of 12 eggs to make cupcakes. What fraction of a dozen

eggs did she used in all? ( Hint: 1 dozen = 12)

1 answer:

koban [17]3 years ago

8 0

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Let f(x) = (5)^x+1 .Evaluate f (-3) without using a calculator

rewona [7]

Answer:

$f\left(-3\right)=\frac{126}{125}$

Step-by-step explanation:

Given

$f\left(x\right)\:=\:\left(5\right)^x+1$

Putting x = -3 to find f(-3)

$f\left(-3\right)\:=\:\left(5\right)^{\left(-3\right)}+1$

as

$5^{-3}=\frac{1}{125}$ ∵ $\mathrm{Apply\:exponent\:rule}:\quad \:a^{-b}=\frac{1}{a^b}$

so

$f\left(-3\right)=\frac{1}{125}+1$

$\mathrm{Convert\:element\:to\:fraction}:\quad \:1=\frac{1\cdot \:125}{125}$

$f\left(-3\right)=\frac{1\cdot \:\:125}{125}+\frac{1}{125}$

$\mathrm{Since\:the\:denominators\:are\:equal,\:combine\:the\:fractions}:\quad \frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c}$

$f\left(-3\right)=\frac{1\cdot \:\:125+1}{125}$

$f\left(-3\right)=\frac{126}{125}$ ∵ $1\cdot \:125+1=126$

Thus,

$f\left(-3\right)=\frac{126}{125}$

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3 years ago

A person flipped a coin 100 times and obtained 73 heads. Can the person conclude that the coin was unbalanced?

Kitty [74]

They can not, there are only 2 sides and they probably flipped it different ways. They got 'lucky'.

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2 years ago

Read 2 more answers

Can someone help me to answer this please.

Volgvan

All it's asking is: How many cubic inches are there in 22 gallons ? And it already GAVE us the conversion factor !

The conversion factor is . . . . . 1 gallon = 231 cubic inches

Multiply each side by 22: 22 gallons = 22 x (231 cubic inches)

22 x 231 = 5,082

22 gallons = 5,082 cubic inches

If you empty a full 22-gallon tank out through that flow meter, the meter will register 5,082 cubic inches when the tank is empty.

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3 years ago

Use a table of trigonometric values to find the angle θ in the right triangle in the following problem. Round to the nearest deg

Firdavs [7]

Heyyyyyy new friends and I have no clue what the answer is cause I don’t feel like reading that but anyway yea nfs?

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2 years ago

Please help I would appreciate it

puteri [66]

Answer:

B. 95

Step-by-step explanation:

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2 years ago