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3 years ago

Help!! I’ll give brainlist !

Mathematics

1 answer:

iren [92.7K]3 years ago

4 0

Divide each one out to see which is cheaper. 4.39/12 = .37 cents per pint while 2.89/8 = .36 cents per pint. These are cost per unit problems.The second choice is the cheaper of 2 by a cent.

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Look at the steps used to solve the equation below . Which mathematical property justifies the work between steps #3 and 4 step#

Neko [114]

I’m sorry I’m wasting an answer but I’m having some technical issues with Brainly so I will try answering a question to see if it works

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2 years ago

Exponet for 13 ·13·13·13

photoshop1234 [79]

The exponent for that would be 13^3.

If the answer is incorrect, then i am sorry.

6 0

3 years ago

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Writing g for the acceleration due to gravity, the period,T, of a pendulum of length l is given by

ivanzaharov [21]

Step-by-step explanation:

$T=2\pi\sqrt{\frac{l}{g}}$

$T+\Delta T=2\pi\sqrt{\frac{(l+\Delta l)}{g}} =2\pi\sqrt{\frac{l}{g}}\sqrt{1+\frac{\Delta l}{l}}=2\pi\sqrt{\frac{l}{g}}(1+\frac{1}{2}\frac{\Delta l}{l}+0(\frac{\Delta l}{l}))=T(1+\frac{1}{2}\frac{\Delta l}{l}+0(\frac{\Delta l}{l}))$

Here, the Taylor approximation for a square root was applied, and O(x) stands for all negligible terms of Taylor's sum with respect to variable x.

So, $\Delta T=T\frac{1}{2}\frac{\Delta l}{l}$

b. For an increase of 2%, that is:

$\frac{\Delta l}{l}=0.02$

$\frac{\Delta T}{T}=\frac{1}{2}0.02=0.01=1\%$

7 0

3 years ago

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Explain why rational exponenets are not defined when the denominator of the exponent in lowest terms is even and the base is neg

Natali5045456 [20]

Answer:

The correct answer is:

we cannot take an even root of a negative number in the real number system.

Explanation:

A rational exponent is another way of writing a root. The denominator of the rational exponent will be the root, and the numerator will be the power of the number under the root. If the denominator is even, this means we are taking an even root, such as square root, 4th root, etc.

If the base is negative, this means we want an even root of a negative number.

Any even root can be broken down into a series of square roots, done one after another.

However, we cannot take the square root of a negative number using real numbers; this is because a square root is a number multiplied by itself to get the answer; a negative times a negative is a positive, as is a positive times a positive, so there is no way to multiply the same number twice and get a negative.

Read more on Brainly.com - brainly.com/question/2004951#readmore

Step-by-step explanation:

7 0

3 years ago

Find the distance between (-7, -3), (5, 2)

Salsk061 [2.6K]

Answer:(12,5)

Step-by-step explanation:-7 to 5 is 12 and -3 to 2 is 5

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3 years ago

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