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ololo11 [35]
3 years ago
6

Reba is collecting pledges for a walk-a-thon. Her mother has pledged a flat donation of $8, and her grandmother has pledged $2 p

er mile. If Reba walks a certain distance, the two donors will end up owing the same amount. What is that distance? How much will each donor owe?​
Mathematics
2 answers:
Rudiy273 years ago
8 0

Answer:

4 miles ,each donor will owe $8 hope this helped!

Step-by-step explanation:

andriy [413]3 years ago
3 0

Answer:4miles

Step-by-step explanation:2x4=8

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Simplify the expression. A) 8^4•8^9
OlgaM077 [116]

Answer:

{8}^{13}

Step-by-step explanation:

{8}^{4}  \times  {8}^{9}  \\  {8}^{4 + 9}  \\  {8}^{13}  \\  = 5.497558139 \times 10 ^{11}

Hope this helps you.

Let me know if you have any other questions :-)

7 0
3 years ago
Let Z={a,c,{a,b}}. What is |Z|?
Lina20 [59]

Z=\{a,c,\{a,b\}\}

\boxed{|Z|=3} (treat \{a,b\} as one element of Z)

The power set of Z is

\boxed{2^Z=\bigg\{\{\},\{a\},\{c\},\big\{\{a,b\}\big\},\{a,c\},\big\{a,\{a,b\}\big\},\big\{c,\{a,b\}\big\},\big\{a,c,\{a,b\}\big\}\bigg\}}

1. \{a,c\}\subseteq Z is true because both a\in Z and c\in Z.

2. a\in Z is true.

3. \{c\}\subseteq Z is true (same reason as part 1).

4. \{c\}\in Z is false because Z does not contain the set \{c\}, rather just the element c itself.

5. b\in Z is false because the element b on its own simply is not in Z. That b\in\{a,b\} does not mean b\in Z, but that b belongs to a subset of Z.

6. \{a,b\}\in Z is true.

6 0
4 years ago
Describe in words the similarities and differences in multiplying and dividing complex numbers.
iragen [17]

Answer:

t does not matter if the two numbers are the same for multiplication or division. 4. ( ÷ ) To divide two fractions, take the second fraction, and flip it so that the top number is now on the bottom and vice versa, then multiply the two fractions together like you would for number 3.

Step-by-step explanation:

7 0
3 years ago
2(x-3)-12 = -4<br> How do I solve this equations
deff fn [24]

Answer:

x= 7

Step-by-step explanation:

1st step: Multiply the factor (outside number) with the numbers and variable(s) in the box. This results in 2(x-3) = 2x-6

2nd Step: continue the rest of the equation since there are no more brackets left so 2x-6-12=-4

3rd Step: send -12 to the other side of the equation (side changes sign changes) so it will become 2x-6=-4+12    (You are actually supposed to make the variable alone on one side of the equation so that you would be able to calculate its value)

4th step: 2x-6=8 ---> send -6 to the other side as well which will then result in 2x=14

5th step: since 2 is being multiplied by x, when you send it to the other side (to make x alone) you will divide 14 by 2 ( sign of 2 changes from multiplication to division)

Final Step: x=7

3 0
3 years ago
27n⁵+75n³ (Factor completely)
dimaraw [331]

Answer:

3n^2 (9+25n)

Step-by-step explanation:

6 0
3 years ago
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