3 years ago

What is the sum of: 4x^2+7x-11 and -6x^2-3x+1

Mathematics

1 answer:

Ber [7]3 years ago

7 0

Answer: two

Step-by-step explanation: six

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Calculate the account balance for $800 left on deposit for 255 days earning 5.25% compounded daily.

Svetradugi [14.3K]

The value would be 829.89.

The formula we use is

$A=p(1+\frac{r}{n})^{nt}$ ,

where A is the total amount, p is the principal, r is the rate expressed as a decimal number, n is the number of times per year the interest is compounded, and t is the number of years.

We will use 800 for p; 5.25/100 = 0.0525 for r; 365 for n; and (255/365) for t (since it is not a full year):
$A=800(1+\frac{0.0525}{365})^{\frac{255}{365}\times365}
\\
\\=800(1+\frac{0.0525}{365})^{255}=829.89$

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3 years ago

Solve for π in S=2πrh

Semmy [17]

2πrh= S

π = S/(2rh)
the answer to the question

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3 years ago

Round 141.999 to the nearest tenth

Minchanka [31]

Hundredth: 142
Hundred: 100
Ten: 140
Tenth: 142<span />

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3 years ago

Which of the following graphs best represents the solution to the pair of equations below? y = −x + 6 y = 2x − 3 A coordinate pl

Lera25 [3.4K]

The lines are

i) y=-x+6
ii) y=2x-3

The solution of the system of equations is found by equalizing the 2 equations:

-x+6=2x-3

-2x-x=-6-3

-3x=-9

x=-9/(-3)=3

substitute x=3 in either i) or ii):

i) y=-3+6=3
ii) y=2(3)-3=6-3=3

(the result is the same, so checking one is enough)

This means that the point (3, 3) is a point which is in both lines, so a solution to the system.

In graphs, this means that the lines intersect at (3, 3) ONLY

Answer: The graph where the lines intersect at (3, 3)

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3 years ago

John bought a crate of floor tiles $100. The crate had 5 boxes of floor tiles. Each box contained 40 floor tiles. What is the co

mash [69]

$0.50.
There are a total of 200 tiles (5 x 40)
since John paid $100 for the 200 tiles,
We have to do $100 divided by 200.
Which is .5
So $.50

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2 years ago

Read 2 more answers