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Dovator [93]
3 years ago
11

Spend he was on the river for4 hours?

Mathematics
1 answer:
GalinKa [24]3 years ago
3 0
D. $244.50

$25.50 x 4 = $102
$28.50 x 5 = $142.50
$102 + $142.50 = $244.50
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Gabrielle's age is three times Mikhail's age. The sum of their ages is 56, what is Mikhail’s age?
4vir4ik [10]
Gabrielle's age is 3x (in which x is mikhail's age)
the sum is 56 so 3x+x=56

3x+x=56
4x=56
x=14

since x was mikhail's age, mikhail is 14 years old
6 0
3 years ago
Let x1 = 12, y1 = 15, and y2 = 3. Let y vary inversely with x. Find x2.
Ostrovityanka [42]
We have that an inverse variation in a function is given by:
 y = k / x

 We must find the value of the constant k.
 To do this, we substitute the values of x1 = 12, y1 = 15.
 We have then:
 15 = k / 12

 Clearing k we have:
 k = (15) * (12)

k = 180
 Substituting the value of k we have that the inverse variation is:
 y = 180 / x

 For y2 = 3 we have:
 3 = 180 / x2

 Clearing x2 we have:
 x2 = 180/3
 x2 = 60
 Answer:
 
x2 = 60
3 0
4 years ago
Mom is 60 years old and daughter is half mom's age. How old was daughter when mom was 4 times her age?
rewona [7]

Answer:

  10 years old

Step-by-step explanation:

The difference in ages is 60 -30 = 30 years. When mom was 4 times daughter's age, the difference in their ages was 3 times the daughter's age.

The age difference was 30 years at that time, so the daughter was 10 years old.

4 0
4 years ago
5.3.PS-/<br> Simplify the expression.<br> -<br> -2.8f + 0.8f – 16 - 9
bezimeni [28]
=-2f-25 is your answer
8 0
3 years ago
How to Factor r^2-5r-14
12345 [234]

Answer:

(r-7)(r+2)

Step-by-step explanation:

First, let's look at the -14. Possible factors for that number are (-2, 7) (2, -7) (1, -14) and (-1, 14).

Now, let's look at the -5. How can we make -5 with the pairs that we just found?

The only possible way is 2 and -7 (added together equals -5)

6 0
3 years ago
Read 2 more answers
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