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3 years ago

3х + 3х – х + 5 + 5x a 2x+5 b 6x+10x c 10x+5 d 6x-5

Mathematics

1 answer:

Lostsunrise [7]3 years ago

6 0

The answer would be C

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Pam signed up for a new gym. She had to pay a $45 sign-up fee and will pay dues of $30 each month for 6 months. Which expression

erastovalidia [21]

Answer:

45 + (30*6)

Step-by-step explanation:

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2 years ago

If ln(4x+y)=2x-3,then dy/dx=

Viktor [21]

$\ln(4x+y)=2x-3$

Differentiate both sides wrt $x$ :

$\dfrac{\mathrm d(\ln(4x+y))}{\mathrm dx}=\dfrac{\mathrm d(2x-3)}{\mathrm dx}$

By the chain rule, we get

$\dfrac1{4x+y}\dfrac{\mathrm d(4x+y)}{\mathrm dx}=2$

$\dfrac{4+\frac{\mathrm dy}{\mathrm dx}}{4x+y}=2$

Solve for $\frac{\mathrm dy}{\mathrm dx}$ :

$4+\dfrac{\mathrm dy}{\mathrm dx}=8x+2y$

$\boxed{\dfrac{\mathrm dy}{\mathrm dx}=8x+2y-4}$

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3 years ago

A recipe that will make 3 pies calls for 7 cups of flour. Find how many pies can be made with 28 cups of flour.

pashok25 [27]

Answer:

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3 years ago

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3 years ago

After losing your job, and needing cash fast, you decide to try

ra1l [238]

Given:

The principal = $ 4000

The rate of interest = 22 %

To find the loan amount a) after 1 year and b) after 3 years.

Formula

Loan amount is

$A = P(1+\frac{r}{100} )^{t}$

where,

A be the loan amount

P be the principal

r be the rate of interest and

t be the time.

Now,

a) Taking, P = 4000, r = 22, t = 1 we get,

$A = 4000 (1+\frac{22}{100} )^{1}$

or, $A = 4880$

Again,

b) Taking, P = 4000, r = 22 and t = 4 w eget,

$A = 4000(1+\frac{22}{100})^{4}$

$or, A = 7263.39$

Hence,

a) The amount of loan after 1 year is $ 4880

and b) The amount of loan after 4 year is $ 7263.39.

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3 years ago