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3 years ago

Solve the system of equations by graphing. y=4x+2 y=7/2x+1 plz help

Mathematics

1 answer:

Dima020 [189]3 years ago

8 0

Answer:

LOL i belive its 200 because i did this exact same thing yesterday for homework and got it right so yeah i guess it is?

Step-by-step explanation:

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What is the interest due on $250 at 11% for 2 years

Afina-wow [57]

$\bf ~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\\ P=\textit{original amount deposited}\to& \$250\\ r=rate\to 11\%\to \frac{11}{100}\to &0.11\\ t=years\to &2 \end{cases} \\\\\\ I=(250)(0.11)(2)\implies I=55$

3 0

3 years ago

Read 2 more answers

Which exponential function goes through the points (1, 16) and (4, 128)?

djyliett [7]

Answer:

Here is the complete question (attachment).

The function which represent the given points are $f(x)=8(2)^{x}$

Step-by-step explanation:

We know that a general exponential function is like, $y=a(b)^{x}$

We can find the answer by hit and trial method by plugging the values of $(x,y)$ coordinates.

Here we are going to solve this with the above general formula.

So as the points are $(1,16)$ then for $x=1,\ y=16$

Can be arranged in terms of the general equation.

$ab^1=16$ ...equation(1) and $ab^4=128$ ...equation(2)

$a\times b=16, then\ a=\frac{16}{a}$

Plugging the values in equation 2.

We have

$\frac{16}{b} b^4=128,16\times b^3=128,b=\sqrt[3]{\frac{128}{16}} =\sqrt[3]{8}=2$

Plugging $b=2$ in equation 1.

We have $a=\frac{16}{b} =\frac{16}{2} =8$

Comparing with the general equation of exponential $a=8$ and $b=2$

So the function which depicts the above points = $y=8(2)^x$

From theoption we have B as the correct answer.

7 0

3 years ago

Help me please desperate!!!

valentina_108 [34]

Answer:

Hope this helps and it is correct!

So, the percent it grew each year (assuming it grew a consatnt amount each year) is 17.4/13

why?

13/13 = 1 year. so we do 17.4/13 to see how much it grew eahc year..

so the answer rounded off 3 decimal places is 1.338

Step-by-step explanation:

3 0

3 years ago

Orlando bought a new couch for $2,904, using the furniture store's finance plan. He will pay $121 a month for 24 months. Which e

kotegsom [21]

So we want to know how much Orlando owes, here's the answer:

Since he pays 121$ every month, the formula would be this:

$y = 2,904 - 121x$ , if we consider x = months.

So the answer is B, $y = 2,904 - 121x$

Hope this helped! c:

3 0

3 years ago

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a wheel has a diameter of 15cm. The wheel travels 50 metres. How many revolutions does the wheel complete?

TEA [102]

Answer:

106

Step-by-step explanation:

The diameter of the wheel is 15 cm or 0.15 m.

The circumference of the wheel is 0.15π m ≈ 0.47 m.

So the wheel moves 0.47 m with each revolution.

The wheel travels 50 m, so the number of revolutions is:

(50 m) / (0.47 m/rev) ≈ 106 revolutions.

8 0

3 years ago