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Amiraneli [1.4K]
3 years ago
9

I ordered some books online for myself and friends. Each book costs $13 and the store charges a flat rate for shipping of $20. W

rite an algebraic expression to show the total cost of the books. Let n represent the number of books.
Mathematics
2 answers:
Anna35 [415]3 years ago
5 0

Answer:

13n+20

Step-by-step explanation:

BabaBlast [244]3 years ago
4 0

Answer: the answer is 13n+20

Step-by-step explanationn: IM TAKING THE TEST

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Vikki [24]

Answer: 4/5

Step-by-step explanation:

The slope : rise over run, or the change in y/ change in x

Change in y = 40 (50 - 90)

Change in x = 50 (50 - 100)

40/50 or 4/5

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3 years ago
The average flower has 34 petals. What is the best estimate of the total number of petals on 57 sunflowers? *Math. What a mathem
saul85 [17]

34 x 57 = 1,938 petals is the correct answer :)

7 0
2 years ago
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Which is a prime number
polet [3.4K]

Answer:

Prime numbers are numbers that have only 2 factors: 1 and themselves. For example, the first 5 prime numbers are 2, 3, 5, 7, and 11.

4 0
3 years ago
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A particle moves on a coordinate line with an acceleration at time t seconds of e^t/2 m/sec^2. At t=0 the particle is at the ori
castortr0y [4]
Hello,

A) a=e^ \frac{t}{2} \\\\

v(t)=\int\ a\ dt=\int\ e^ \frac{t}{2}\ dt=2*e^ \frac{t}{2}+C\\\\v(0)=-4\\
 2*e^ \frac{0}{2}+C=-4\\
 C=-6\\\\

\boxed{v(t)= 2*e^ \frac{0}{2}-6}\\\\





B)
2*e^ \frac{t}{2}-6=0\\\\

e^ \frac{t}{2}=3\\\\

t=2*ln(3)\approx{2,19722...}\\



C)

x(t)=\int_0^6(2*e^ \frac{t}{2}-6})\ dt=\left[4*e^ \frac{t}{2}-6t\right]_0^6\\\\ =e^3-36-4=4e^3-40\approx{40.3421...}\\\\



5 0
2 years ago
Graph the function g(x) =x^2+4x+1
gladu [14]

Answer:

Step-by-step explanation:

Let's "complete the square," which will give us the vertex of this vertical, opens-up parabola:

g(x) =x^2+4x+1 can be rewritten as g(x) =x^2+4x + 4 - 4 +1, where that +4 comes from squaring half of the coefficient of x.

Then we have   g(x) =x^2+4x + 4 - 4 + 1  =>  g(x) = (x + 2)^2 - 3.

Comparing this to                                             y   = (x - h)^2 + k,

we see that the vertex, (h, k), is located at (-2, -3).

Plot this vertex.  Also, plot the y-intercept (0, g(0) ), which is (0, 1).

This information is enough to permit graphing the function roughly.

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3 years ago
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