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ivann1987 [24]
3 years ago
10

Subtract. (5r2+5r+9)–(3r+2)

Mathematics
1 answer:
natulia [17]3 years ago
4 0
The answer is 5r2-2r+7
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Please help and thank you
daser333 [38]
Your answer is C, 49
5 0
3 years ago
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The local bike shop sells a bike and accessories package for $320 if the bike is worth 7 times more than the accessories,how muc
sdas [7]
So, bike=b and accessories=a.

b+a=320

Since the bike is worth 7 times more than the accessories, the b would turn into 7a (because 7 times the cost of accessories is the cost of the bike).

The equation would now turn into 7a+a=320.

Solve for a.

7a+a=320
8a=320
a=40

Now that you know the cost of the accessories, you multiply that 40
by 7 to get the cost of the bike.

40(7)
280

The cost of the bike is $280.
The cost of the accessories are/is $40.
6 0
3 years ago
Consider the exponential function f(x) = 2(3x) and its graph.
AveGali [126]

Answer:

The initial value of the function is <u>2</u>

The base of the function is <u>3</u>

The function shows exponential <u>growth</u>

Step-by-step explanation:

f(x) = 2(3^x)

Exponential functions are those with the following equation:

y = a*b^x

where a ≠ 0, b > 0 and b ≠ 1 and x is a real number.

<em>a</em> is the y-intercept and <em>b </em>is the base.

The initial value of the function is the same as the y-intercept

If <em>a</em> is positive, the function growth. If <em>a</em> is negative, the function decay

6 0
3 years ago
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PLZ help 50 pts. and brainliest
olganol [36]

Answer:

what do u want us to do?

Step-by-step explanation:

6 0
3 years ago
Evaluate the dot product a⃗ ⋅b⃗ of a⃗ =3i^−8j^ and b⃗ =−2i^−6j^.
Mkey [24]
The "dot product" of two vectors has several different formulas.

Since you are given the x- and y-coordinates of both vectors a and b, we can apply the formula

a dot b  = ax*bx + ay*by, where ax=x-component of vector a, by=y comp of vector b, and so on.  

So, for the problem at hand, ax * bx + ay * by becomes

3(-2) + (-8)(-6) = -6 + 48 = 42 (answer).  Note that the dot product (or "scalar product" is itself a scalar.
4 0
3 years ago
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