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Alborosie
3 years ago
12

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down; drag it into the corre

ct position in the answer box. Release your mouse button when the item is place.
If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers.
Add the following polynomials, and then place the answer in the proper location on the grid. Write the answer in descending powers of x. Find the sum of (5x3 + 3x2 - 5x + 4) and (8x3 -5x2 + 8x + 9).
Mathematics
1 answer:
Alex777 [14]3 years ago
3 0
8x^3 -5x^2 + 8x + 9+5x^3 + 3x^2 - 5x + 4 = 
8x^3+5x^3-5x^2 + 3x^2+ 8x - 5x+ 9<span>+ 4 = </span>
13x^3-2x^2+3x+13
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The formula A equals =P left parenthesis 1 plus r right parenthesis squared (1+r)2 gives the amount A in dollars that P dollars
vlabodo [156]
The interest rate is 3.5%.

EXPLANATION

We substitute the given values into the formula;

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

to obtain

6427.35=6000(1+\frac{r}{100})^2

We divide through by 6000 to obtain,

\frac{6427.35}{6000}=(1+\frac{r}{100})^2

This implies that,

1.071225=(1+\frac{r}{100})^2

We take the square root of both sides,

\sqrt{1.071225}=(1+\frac{r}{100})

This gives us,

1.035=(1+\frac{r}{100})

Add -1 to both sides of the equation to obtain

0.035=\frac{r}{100}

Multiply through by 100 to obtain;

r=3.5%

Therefore the rate is 3.5%
3 0
3 years ago
Calculate m∠ABC and m∠CBD, what is the value of x?<br><br> Enter your answer in the box.
QveST [7]
X is twenty

2x+6x+20=180
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8 0
2 years ago
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The table shows the heights in feet of serval students in Mrs.Patels class.
Margarita [4]
I will need a picture of the table first <span />
8 0
3 years ago
4x - 5y = 15<br> find the slope and y-intercept
Mazyrski [523]

Answer:

slope=4/5

y-intercept = -3

Step-by-step explanation:

first we need to rewrite the expression to

y=mx+b

were b is the y-intercept and m the slope

4x-5y=15\\\\4x-5y+5y=15+5y\\\\4x+0=15+5y\\\\4x=5(3)+5(y)\\\\4x=5(3+y)\\\\\frac{1}{5}*4x= \frac{1}{5}*5(3+y) \\\\\frac{4x}{5}=3+y\\\\\frac{4x}{5} -3=3+y-3\\\\\frac{4x}{5} -3=y+0\\\\y=\frac{4x}{5} -3\\\\y=\frac{4}{5}x-3

so there we have it

m=\frac{4}{5} \\\\b=-3

6 0
3 years ago
Looking to Calculate the rise and run to find the slope of each line !
maxonik [38]

Answer:

1.slope = 4/2x  2.slope= -5/4x  3.slope=7/5x

Step-by-step explanation:

Have a great night

3 0
2 years ago
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