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Svetllana [295]
3 years ago
14

At the farmers market two pounds of peaches cost $4.20.How much will five pounds cost?

Mathematics
2 answers:
Alex73 [517]3 years ago
5 0
If 2 lbs. is 4.20 we can divide that by 2 to figure out what 1 lbs. costs:
4.20 / 2 = 2.10
Now we know one pound of peaches is $2.10 so you multiply that by 5 to see how much 5 lbs. costs:
2.10 (5) = $10.50
DedPeter [7]3 years ago
4 0
$21,00  porque multiplicando $4,20 por 5 da ese resultado
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If (x^2 - 1) is a factor of ax^4 + bx^3 + cx^2 + dx + e, show that a + c + e = b + d = 0
alisha [4.7K]
x^2-1=x^2-1^2=(x-1)(x+1)

If x²-1 is a factor of the polynomial, both x-1 and x+1 are factors of it.

According to the remainder theorem, if a binomial x-a is a factor of a polynomial p(x), then p(a)=0.

If x-1 and x+1 are factors of the polynomial p(x)=ax⁴+bx³+cx²+dx+e, then p(1)=0 and p(-1)=0.

p(1)=a \times 1^4+b \times 1^3 + c \times 1^2+ d \times 1+e \\
p(-1)=a \times (-1)^4 + b \times (-1)^3 + c \times (-1)^2 + d \times (-1)+e \\ \\
p(1)=a+b+c+d+e \\
p(-1)=a-b+c-d+e \\ \\
p(1)=0 \\
p(-1)=0 \\ \\ \hbox{add both equations:} \\
a+b+c+d+e=0 \\
\underline{a-b+c-d+e=0} \\
2a+2c+2e=0 \\
2(a+c+e)=0 \\
a+c+e=0 \\ \\
\hbox{substitute 0 for a+c+e in the first equation:} \\
a+b+c+d+e=0 \\
(a+c+e)+b+d=0 \\
0+b+d=0 \\
b+d=0 \\ \\
\boxed{a+c+e=b+d=0} \\
\hbox{proved } \checkmark
8 0
3 years ago
15) 4+4(v - 6) &lt;-29+ v<br> what’s v =
MA_775_DIABLO [31]

Answer:

The answer is: v < -3. So any number less than -3 fulfills the inequality.

Step-by-step explanation:

4 + 4(v - 6) < -29 + v

4 + 4v - 24 < -29 + v

4v - 20 < -29 + v

3v < -9

v < -3

Hope this helps! Have an awesome day! :-)

3 0
3 years ago
If 1 is added to eight times a​ number, the result is equal to 4 more than seven times the number. Find the number.
Inessa [10]
The answer to this question is c
4 0
2 years ago
Read 2 more answers
Carl bought s sheets of stickers. There are 17 stickers on each sheet. Write an expression that shows how many stickers Carl bou
liraira [26]
How many carl bought ?? maybe it multiply

6 0
3 years ago
Consider the first six terms of this sequence: 3,6,12,24,48,96,.......... What would be the sum of the first 19 terms of this se
RideAnS [48]

Answer:

1,572,861

Step-by-step explanation:

1. 3

2. 6

3. 12

4. 24

5. 48

6. 96

7. 192

8. 384

9. 768

10. 1536

11. 3072

12. 6144

13. 12288

14. 24576

15. 49152

16. 98304

17. 196608

18. 393216

19. 786432

Now we have to add all those

786432 + 393216 + 196608 + 98304 + 49152+ 24576 + 12288 + 6144 + 3072 + 1536 + 768 + 384 + 192 + 96 + 48 + 24 + 12 + 6 + 3..

This is alot of math but it equals 1572861

1,572,861

8 0
2 years ago
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