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irinina [24]
2 years ago
13

At the bookstore, Tim bought a magazine for $4, and five books that all cost the same amount. He spent a total of $129. Which eq

uation expresses how much each book cost?
Mathematics
1 answer:
inn [45]2 years ago
7 0

Answer:

25(b) + 4 = 129

Step-by-step explanation:

b=5

25(5) + 4=129

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20 POINTS AND BRAINLIEST!! Write an exponential function in the form y=ab^x
Rudik [331]

Answer:

y=13(4)^x

Step-by-step explanation:

We have the exponential function of the form:

y=ab^x

And it goes through the points (0, 13) and (3, 832).

Hence, when we substitute in 0 for x, we should get 13 for y. Therefore:

13=ab^0

Since anything to the zeroth power is 1, this yields:

a=13

So, we determined that the value of a is 13.

So, our function is now:

y=13b^x

We will need to determine b. We know that y equals 832 when x is 3. Hence:

832=13(b)^3

Divide both sides by 13:

b^3=64

Take the cube root of both sides:

b=4

Hence, our b value is 4.

Therefore, our entire equation is:

y=13(4)^x

3 0
3 years ago
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spayn [35]
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7 0
3 years ago
26 is 65% of what number?
Bezzdna [24]

Answer:

40

Step-by-step explanation:

26 is 65% of 40

6 0
3 years ago
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Cuanto es 90 x 90 entre 50?
Sladkaya [172]
Tu respuesta Es 162
4 0
3 years ago
The following stem-and-leaf plots compare the ages of 30 actors and 30 actresses at the time they won the Oscar award for Best A
stealth61 [152]

The image of the stem-and-leaf plots is in the attachment.

Answer: (a) 31 years; (b) 59 years; (c) 56 years

Step-by-step explanation: Steam and leaf is a table that shows the digits of the data value split into a "stem", which represents the first digit, and a "leaf", which is the last digit.

For example, the first row of the table in the attachment, indicate a "stem" 2 and the first number of a "leaf" is 1, so the actress has 21 years.

(a) According to the table, the youngest actor to win an Oscar has a "stem" 3 and the first "leaf" from the right is 1, so the actor has 31 years.

(b) The oldest actress is 80 and the youngest is 21, so difference is:

80 - 21 = 59

The difference is 59 years.

(c) The oldest age shared by 2 actors is 56 years.

6 0
3 years ago
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