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Ostrovityanka [42]
3 years ago
7

What is the value of the expression -9 - (-5)?

Mathematics
2 answers:
kotykmax [81]3 years ago
5 0

Answer:

-4

Step-by-step explanation:

two - makes 5 positive if you add it to -9 you'll get -4

Ronch [10]3 years ago
5 0

Answer: -4

Step-by-step explanation: when you simplify -9 - (-5) you get -4

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4 0
3 years ago
Could the triangle shown be a right angle YES or NO
andriy [413]

Answer:

<em>yes</em><em> </em><em>it</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>right</em><em> </em><em>angle</em><em> </em>

8 0
2 years ago
How would you round 95687 to the nearest thousand?
andre [41]

Answer:

96,000

Step-by-step explanation:

To round to the nearest thousand, we need to look at the digit in the hundreds place, which is 6. Since 6 > 5, we know that we need to round up (because 6 is closer to 10 than it is to 0). Currently, the number is 95 thousand so when rounding up, the answer will be 96,000.

5 0
3 years ago
Guys please help me out ASAP, Due today. I
Mice21 [21]

Answer:

T_7 = 11

T_n = 2n- 3

Step-by-step explanation:

Given

S_n = n^2 -2n

T_n = S_n - S_{n-1}

Solving (a): T7

Substitute 7 for n in T_n = S_n - S_{n-1}

T_7 = S_7 - S_{7-1}

T_7 = S_7 - S_6

Calculate S7 and S6

S_n = n^2 -2n

S_7 = 7^2 - 2 * 7 = 35

S_6 = 6^2 - 2 * 6 = 24

So:

T_7 = 35 -24

T_7 = 11

Solving (b): Tn

T_n = S_n - S_{n-1}

Where S_n = n^2 -2n

CalculateS_{n-1}

We have:

S_{n-1} =(n-1)^2 - 2(n-1)

Open brackets

S_{n-1} = n^2 -2n + 1 -2n +2

S_{n-1} = n^2 -2n-2n + 1  +2

S_{n-1} = n^2 -4n + 3

So:

T_n = S_n - S_{n-1}

T_n = n^2 - 2n - (n^2 -4n + 3)

T_n = n^2 - 2n - n^2 +4n - 3

Collect Like Terms

T_n = n^2 - n^2- 2n  +4n - 3

T_n = 2n- 3

5 0
3 years ago
7. Krista wrote a list of factors and a list
Lubov Fominskaja [6]

Answer:

3 is to 12, 5 is to 50, 7 is to 14, and 11 is to 22.

Step-by-step explanation:

4 0
3 years ago
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