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Rom4ik [11]
3 years ago
15

Please help with these 5 questions about trinomials. Thank you so much! :)

Mathematics
1 answer:
Gnom [1K]3 years ago
5 0

Answer:

The answer to your question is below

Step-by-step explanation:

1.- (x + 2)(x + 4) = x² + 4x + 2x + 8 = x² + 6x + 8

2.- (m - 5)(m + 2) = m² + 2m - 5m - 10 = m² - 3m - 10

3.- (2x + 3)(4x - 2) = 8x² - 4x + 12x - 6 = 8x² + 8x - 6

4.- (2r - 3)(r + 12) = 2r² + 24r - 3r - 36 = 2r² + 21r - 36

6.- (k - 3)(k - 1) = k² - k - 3k + 3 = k² - 4k + 3

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A rectangular field is 125 meters long and 75 meters wide. Give the length and width of another rectangular field that has the s
mario62 [17]

Answer:

150 m and 50 m

Step-by-step explanation:

l= 125 m

w= 75 m

P= 2(125+75)= 400 m

A= 125*75= 9375 m²

l1= 125+25= 150 m

w1= 75-25= 50 m

A1= 150*50= 7500 m² smaller area with same perimeter

5 0
3 years ago
PLEASE HELP
denpristay [2]

the statement must be true

D. <A+<D=180°

6 0
2 years ago
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Which should come next at the end of this row of letters: a b d g?
Sav [38]
Refer to the figure shown below.

From a to b, we skip 1 letter.
From b to d, we skip 2 letters.
From d to g, we skip 3 letters.

Inductively, we should skip 4 letters to arrive at the next letter, which is k.

Answer: k

5 0
2 years ago
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Markus receives dollar bills from his grandfather for one week. On the first day he received $1; on the second day he received $
Papessa [141]

Answer:

64$

Step-by-step explanation:

well it is doubling every time. so 64$

3 0
2 years ago
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How did the temperature change if :
Mkey [24]
<h3>Answer: Net Increase of 26%</h3>

===================================================

Explanation:

If it increases by 5%, then we use the multiplier 1.05

Think of it like saying 100% + 5% = 1 + 0.05 = 1.05

Similarly, an increase of 20% means we involve 1.20

Combine those multipliers to get: 1.05*1.20 = 1.26

This is a net increase of 26%

Interestingly, we get fairly close to 25% which is what many students might go for (since 5 + 20 = 25). This is a beginner's trap.

----------------

An example:

Let's say the temperature is 20 degrees Celsius (68 degrees Fahrenheit)

An increase of 5% means it moves to 1.05*20 = 21 degrees C

A 20% increase means we go to 1.20*21 = 25.2 degrees C

The shortcut would be to do a 26% increase to get 1.26*20 = 25.2 to help confirm we have the correct combined increase.

7 0
1 year ago
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