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Vilka [71]
3 years ago
15

I need help with these questions

Mathematics
1 answer:
MA_775_DIABLO [31]3 years ago
5 0

9514 1404 393

Answer:

  17.  25 mile per gallon

  18. Eduardo did should have divided by -4.

Step-by-step explanation:

17. The least mileage will be had when the most gas is used to go a given distance. For the given distance, the most gas that could have been used (without adding any) is 18 gallons. Then the least mileage is ...

  (450 mi)/(18 gal) = 25 mi/gal

__

18. The appropriate method for solving this inequality is ...

  -4x/(-4) < 120/(-4) . . . . divide both sides by -4 (and reverse the > symbol)

  x < -30

The step Eduardo took of adding 4 will give ...

  -4x +4 > 124 . . . . . puts him one step farther away from a solution

Eduardo chose an operation to perform that did not get him closer to a solution.

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I need an answer to 2. a and b and 3. a
Katen [24]

The square of an odd number:

We're to conjecture, not do algebra, apparently.  1²=1, 3²=9, 5²=25, 7²=49, ...

We conjecture the square of an odd number is odd.

The product of two evens and an odd:

Again, we'll run some examples.

(2)(2)(1)=4

(2)(4)(3)=24

(4)(6)(5) =120

(4)(8)(1)=32

Conjecture: The product of two evens and an odd is a multiple of 4


Counterexample: The product of two fractions is never an integer

How about

3/4 × 4/3 = 1


4 0
4 years ago
DEVON OWNS A HOUSE CLEANING COMPANY AND HAS TO GIVE PRICE QUOTES TO POTENTIAL CUSTOMERS. HE FIGURES OUT HIS PRICE BY ASSUMING A
vampirchik [111]
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5 0
4 years ago
Need help please thanks you
Nataly [62]
A + C = 90/190

B + D = 100/190

Therefore answer is H
4 0
3 years ago
Of the students in your class 25% walk to school.what fraction of the students walk to school?
kari74 [83]
25% = 1/4 ..................
4 0
4 years ago
The equation of the line passing through (2, 3) with a slope of 5 is y = []x- [] ​
Katen [24]

Answer:    y = 5x - 7

Step-by-step explanation:

y = mx + b, where m = slope

We plug in the point, where x = 2, and y = 3

y = 5x - b

3 = 5(2) - b

3 = 10 - b

b + 3 = 10

b = 7

y = 5x - 7

4 0
3 years ago
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