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dem82 [27]
3 years ago
10

What is (1.6x + 7.3) + (-0.6x + 2) – (7.8 - 3.4x), simplified?

Mathematics
1 answer:
boyakko [2]3 years ago
3 0
4.4x + 1.5 i thinkkkk
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Expressions cannot _____.
Gwar [14]
Expressions cannot <u>be solved.
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8 0
3 years ago
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What is the slope of the line through (1, -1) and (5. – 7)?
Vladimir [108]

Answer:

-3/2

Step-by-step explanation:

Given two points, we can find the slope by

m = (y2-y1)/(x2-x1)

    = (-7 - -1)/ (5-1)

    = (-7+1)/(5-1)

    = -6/4

    = -3/2

6 0
3 years ago
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How is the series 9 + 13+ 17+ ... + 149 represented in summation notation?
VLD [36.1K]

Notice that

13 - 9 = 4

17 - 13 = 4

so it's likely that each pair of consecutive terms in the sum differ by 4. This means the last term, 149, is equal to 9 plus some multiple of 4 :

149 = 9 + 4k

140 = 4k

k = 140/4

k = 35

This tells you there are 35 + 1 = 36 terms in the sum (since the first term is 9 plus 0 times 4, and the last term is 9 plus 35 times 4). Among the given options, only the first choice contains the same amount of terms.

Put another way, we have

\displaystyle 9 + 13 + 17 + \cdots + 149 = \sum_{k=0}^{35} (9 + 4k)

but if we make the sum start at k = 1, we need to replace every instance of k with k - 1, and accordingly adjust the upper limit in the sum.

\displaystyle 9 + 13 + 17 + \cdots + 149 = \sum_{k-1=0}^{35+1} (9 + 4(k-1))

\displaystyle 9 + 13 + 17 + \cdots + 149 = \sum_{k=1}^{36} (5 + 4k)

7 0
2 years ago
The green line below
trasher [3.6K]
A,d I'm pretty sure because of the cy axis
7 0
3 years ago
Read 2 more answers
Help me please and thank you.​
11111nata11111 [884]

Answer:

The constant term is 6

The x³ term has a coeficient of 12

The resulting polynomial has degree 4

7 0
2 years ago
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