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REY [17]
3 years ago
15

Different machines pack boxes. Which ratio represents each of the machines?

Mathematics
1 answer:
san4es73 [151]3 years ago
6 0

Answer:

HI

Step-by-step explanation:

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If x^2-13x+42=(x+A)(x+B), then find the value of 3A-B
tigry1 [53]

Answer:

- 11 or - 15

Step-by-step explanation:

Factorise

x² - 13x + 42

Consider the factors of the constant term (+ 42) which sum to give the coefficient of the x- term (- 13)

The factors are - 6 and - 7, since

- 6 × - 7 = + 42 and - 6 - 7 = - 13, thus

x² - 13x + 42 = (x - 6)(x - 7)

compare to (x + A)(x + B)

A = - 6, B = - 7

thus 3A - B = 3(- 6) - (- 7) = - 18 + 7 = - 11

The factors may also be expressed as (x - 7)(x - 6)

with A = - 7 and B = - 6, then

3A - B = 3(- 7) - (- 6) = - 21 + 6 = - 15

5 0
3 years ago
The current price of bulk organic sugar is $6 per pound, which is 20% more than it used to
sweet [91]
The previous price was $5
7 0
3 years ago
The Orlando Solar Bears had a successful season on the ice winning 80% of their games. They won a record of 32 games. How many g
Makovka662 [10]

Answer:

Step-by-step explanation:

You'd do 80% times 32. You have to move the 80 to the left 2 times. then multiply.

7 0
3 years ago
Hari walked 2 miles in 1/2 hour. True or False: Hari walked 1 mile in 15 minutes. Can you please explain.
4vir4ik [10]
2 miles = 1/2 hour (a whole hour is 60 mins so half of that is 30 mins) 1 mile = 15 mins (15 mins is half of 30 mins) so yes its true
5 0
3 years ago
Read 2 more answers
What is the square root of 32 over 4
castortr0y [4]

\frac{\sqrt{32}}{4}

Factor square root of 32: 2^5/2.

Factor 4: 2^2

\frac{2^\frac{5}{2}}{2^{2}}

Cancel 2 1/2= 2 1/2.

2 1/2= square root of 2.

Answer: \sqrt{2}

Hope this helps :)

4 0
3 years ago
Read 2 more answers
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