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timurjin [86]
3 years ago
6

Simplify the expression. 9r + 3r2 – 5r + 7

Mathematics
2 answers:
vitfil [10]3 years ago
7 0

9r + 3r^2 – 5r + 7

Combine like terms:

9r -5r = 4r

Simplified expression:

3r^2 + 4r +7

GuDViN [60]3 years ago
7 0

9r + 3r ^ 2 - 5r + 7

Combine termos semelhantes:

9r -5r = 4r

Expressão simplificada:

3r ^ 2 + 4r +7

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sweet-ann [11.9K]

Answer:

The camp Purchased 2 small boxes and 4 large boxes.

Step-by-step explanation:

Let Number of Small box purchased be x.

Now Given:

The camp bought 2 more large boxes than small boxes.

Hence Number of large box purchased = x+2

Also Given:

Total Number of Granola bars = 144

Now Each small box has 12 granola bars and each large box has 30 granola bars.

Hence Total Number of Granola bars is equal to sum of number of granola bars in each small box multiplied by number of small box and number of granola bars in each large box multiplied by number of larger box.

Hence equation can be framed as.

12x+30(x+2)=144

Now we will use distributive property to solve the same we get;

12x+30x+30\times2 =144

Now Using multiplication propert we get;

12x+30x+60=144

Now Combining like terms we get;

12x+30x=144-60\\

Now By using Addition and Subtraction property we get;

42x=84

Now Using Division property we get;

\frac{42x}{42}=\frac{84}{42}\\\\x=2

Number of Small boxes purchased = 2

Number of Large boxes purchased = x+2=2+2=4

Hence The camp Purchased 2 small boxes and 4 large boxes.

8 0
3 years ago
How do I factor<br><br><img src="https://tex.z-dn.net/?f=2x%20%7B%20%2B%7D%5E%7B3x" id="TexFormula1" title="2x { +}^{3x" alt="2x
Rina8888 [55]
Easy.

2x + 3x

2x + 3x

2x ( 1 + 3x / 2x )

2x ( 1 + 1.5 )

2x ( 3 )

6x

or

2x ( 3 )

or

3x ( 2 )

That's it.

Hope helps ...........

7 0
3 years ago
Jeri is a hairdresser. The table below shows the relationship between the number of clients she has per month, x, and her monthl
LenaWriter [7]
The given data is

  x       f(x)
----  --------
12          0
20     800
30    1800

where
x = number of clients per month
f(x) = monthly revenue

A graph of the data is shown below.
Let the equation of the line be
y = mx + c

The x-intercept is 12, therefore
12m + c = 0              (1)

The line passes through (30, 1800) and (12,0). Therefore the slope is
m = 1800/(30-12) = 100       (2)

From (1), obtain
c = -12m = -12*100 = -1200

Therefore
y = 100x - 1200

Answer: D. f(x) = 100x - 1200

3 0
3 years ago
Identify the variation as direct, inverse, joint or combined. If the area of a rectangle stays constant, what is the relationshi
kirill [66]

Your answer is inverse.

4 0
3 years ago
Read 2 more answers
(Quadratic Formula) (Irrational level 1)
Leni [432]

Answer:

(-11 +/- sqrt 21) /  10

or

-0.64 , -1.56 to the nearest hundredth.

Step-by-step explanation:

9v^2 + 11v + 5 = 4v^2

5v^2 + 11v + 5 = 0

Using the quadratic formula:

v  = [ - 11 +/- sqrt(11^2 - 4*5*5) ] / 2*5

= (-11 +/- sqrt 21) /  10

= -0.64 , -1.56 to the nearest hundredth.

7 0
3 years ago
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