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Marina CMI [18]
1 year ago
9

Evaluate the given algebraic expressions replacing x with -2 and y with 13x^2

Mathematics
1 answer:
Anvisha [2.4K]1 year ago
3 0

Answer:

12

Step-by-step explanation:

3x^2

because the information provided states that x = -2, that is what we are going to replace x with.

3(-2)^2

the next step is to evaluate the power because that is next in PEMDAS.

(-2)^2 = 4

that leaves us with:

3 * 4 = 12      ( the " * " represents the multiplication sign)

hope this helps!

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The first term in a geometric series is 64 and the common ratio is 0.75. Find the sum of the first 4 terms in the series.
maks197457 [2]

Answer:

195.25

Step-by-step explanation:

Consider geometric series  S(n) where initial term is a

So S(n)=a+ar^1+...ar^n

Factor out a

S(n)=a(1+r+r^2...+r^n)

Multiply by r

S(n)r=a(r+r^2+r^3...+r^n+r^n+1)

Subtract S(n) from S(n)r

Note that only 1 and rn^1 remain.

S(n)r-S(n)=a(r^n+1  -1)

Factor out S(n)

S(n)(r-1)=a(r^n+1  -1)

The formula now shows S(n)=a(r^n+1  -1)/(r-1)

Now use the formula for the problem

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3 years ago
Which line could be the graph of the points in the table?
Ulleksa [173]
The third one because its the only one decreasing
3 0
2 years ago
Giving brainly if correct show work :)​
fenix001 [56]

Answer:

35

Step-by-step explanation:

Maneesha: 75 % × 37 sunflower seeds equals to 27.75

27.75 is a decimal so rounded off they become 28

her friend: 1/3 × 21 = 7 pumpkin seeds

the total of the seeds will be 28 + 7 = 35 seeds

<em> </em><em> </em><em> </em><em> </em>

<em> </em><em> </em><em> </em><em> </em><em>N:</em><em>B </em><em>if</em><em> </em><em>you're </em><em>using</em><em> </em><em>decimal</em><em> </em><em>calculations</em><em>.</em><em> </em><em>T</em><em>he</em><em> </em><em>total</em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>a</em><em>mount</em><em> </em><em>of</em><em> </em><em>seeds</em><em> </em><em>will </em><em>be</em><em> </em><em>34</em><em>.</em><em>7</em><em>5</em>

4 0
2 years ago
g If there are 52 cards in a deck with four suits (hearts, clubs, diamonds, and spades), how many ways can you select 5 diamonds
dezoksy [38]

Answer:

The number of ways to select 5 diamonds and 3 clubs is 368,082.

Step-by-step explanation:

In a standard deck of 52 cards there are 4 suits each consisting of 13 cards.

Compute the probability of selecting 5 diamonds and 3 clubs as follows:

The number of ways of selecting 0 cards from 13 hearts is:

{13\choose 0}=\frac{13!}{0!\times(13-0)!} =\frac{13!}{13!}=1

The number of ways of selecting 3 cards from 13 clubs is:

{13\choose 3}=\frac{13!}{3!\times(13-3)!} =\frac{13!}{13!\times10!}=286

The number of ways of selecting 5 cards from 13 diamonds is:

{13\choose 5}=\frac{13!}{5!\times(13-5)!} =\frac{13!}{13!\times8!}=1287

The number of ways of selecting 0 cards from 13 spades is:

{13\choose 0}=\frac{13!}{0!\times(13-0)!} =\frac{13!}{13!}=1

Compute the number of ways to select 5 diamonds and 3 clubs as:

{13\choose0}\times{13\choose3}\times{13\choose5}\times{13\choose0} = 1\times286\times1287\times1=368082

Thus, the number of ways to select 5 diamonds and 3 clubs is 368,082.

6 0
2 years ago
Find the measure of angle x in the figure below:
Crank

Answer:

70 degrees

Step-by-step explanation:

Because an area of a triangle is 180.

55 + 55 = 110    180 - 110 = 70

110 + 70 = 180

8 0
3 years ago
Read 2 more answers
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