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Eva8 [605]
3 years ago
13

1. f(−1)

Mathematics
2 answers:
iragen [17]3 years ago
7 0

Ans hb 420

Step-by-step explanation:

Bingel [31]3 years ago
3 0

Answer:did u find the answer

Step-by-step explanation:

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Energy bars are on sale at 20 bars for $5. How many can<br> you buy for $18?
Scilla [17]

Answser:

72 bars

Step-by-step explanation:

Thy are .25 each

.25 divided by 18.00 = 72

3 0
3 years ago
Which of the following is a polynomial?
Zanzabum

Answer:

I'm pretty sure A is the correct answer :)

(x-2)(x^4+3) is a polynomial

5 0
2 years ago
8x-5y=21 simultaneous linear equation<br>2x+9y=-5
olya-2409 [2.1K]

Answer:

x=2 and y=-1

Step-by-step explanation:

If two equations are given, we can solve one of the equation in terms of single variable and put it in the other equation which will further give the value of x and y.

For the given equations:

8x-5y=21              Equation:1

2x+9y=-5             Equation:2

Solving equation multiply equation 2 with 4 on both the sides

8x+36y=-20        Equation 3

Subtracting Equation:3 from Equation:1

8x-5y-(8x+36y)=21-(-20)\\8x-5y-8x-36y=21+20\\-41y=41\\y=-1

Putting value of 'y' in Equation:2 which will give the value of x

2x+9y=-5\\2x+9(-1)=-5\\2x-9=-5\\2x=4\\x=2

8 0
3 years ago
Suppose A and B represent two different school populations where A &gt; B and A and B must be greater than 0. Which of the follo
Ulleksa [173]
We can reject the last one: subtracting a non-zero value will result in a smaller value.

So now we have:

<span>2(A + B)
(A + B)2
A2 + B2

If all of them are mulptiplications, then they are all equivalent!

I mean by this, if what you meant is this:

</span>
<span>2*(A + B)
(A + B)*2
A*2 + B*2

If there is no sign, then the multiplication sign is implicit,


and all of these expressions say exactly the same: two of A and two of B.
</span>
6 0
3 years ago
The blue dot is at what value on the number line ?
Veronika [31]

Answer:

1

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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