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3 years ago

I just need help with number 25. Show work please

Mathematics

2 answers:

PSYCHO15rus [73]3 years ago

8 0

97.8-63.65

97.80
-63.65
-----------
34.15

steposvetlana [31]3 years ago

4 0

You need to subtract the melting point of sodium from potassium (97.8 - 63.65) which is 34.15

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PEMDA is a regular pentagon. which of the statements is correct

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3 years ago

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6 times a number is 27 less than the square of that number. Find the positive solution.

Verdich [7]

Let x = your number.

6x = x^2 - 27. Subtract 6x from each side.

0 = x^2 - 6x - 27. Factor

0 = (x-9) (x+3). Set each term equal to zero

(x+3) = 0. Subtract 3 from each side.

x = -3. This is the negative solution.

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3 years ago

Find the annual rate of interest. Principal = 4600 rupees Period = 5 years Total amount = 6440 rupees Annual rate of interest =

Semmy [17]

Answer:

The rate of interest for compounded annually is 6.96 % .

Step-by-step explanation:

Given as :

The principal amount = Rs 4600

The time period = 5 years

The amount after 5 years = Rs 6440

Let The rate of interest = R %

From compounded method

Amount = Principal × $(1+\dfrac{\textrm rate}{100})^{\textrm Time}$

or, Rs 6440 = Rs 4600 × $(1+\dfrac{\textrm R}{100})^{\textrm 5}$

Or, $\frac{6440}{4600}$ = $(1+\dfrac{\textrm R}{100})^{\textrm 5}$

or, 1.4 = $(1+\dfrac{\textrm R}{100})^{\textrm 5}$

Or, $(1.4)^{\frac{1}{5}}$ = 1 + $\dfrac{R}{100}$

or, 1.0696 = 1 + $\dfrac{R}{100}$

or, $\dfrac{R}{100}$ = 1.0696 - 1

Or, $\dfrac{R}{100}$ = 0.0696

∴ R = 0.0696 × 100

I.e R = 6.96

Hence The rate of interest for compounded annually is 6.96 % . Answer

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3 years ago

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kumpel [21]

Answer:

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Step-by-step explanation:

Because they are adding 700 each time.

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2 years ago

Solve x2 – 14x 31 = 63 for x

madreJ [45]

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

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