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Svet_ta [14]
3 years ago
6

Find the sum of 9x² - 6x + 7, 5-4 xand 6-3x²​

Mathematics
1 answer:
puteri [66]3 years ago
3 0

Answer:

6x² - 10x + 11

Step-by-step explanation:

Step 1: Write expression

(9x² - 6x) + (5 - 4x) + (6 - 3x²)

Step 2: Combine like terms

6x² - 10x + 11

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2(x + 3) = x - 4 <br>And <br>4(5x-2)=2(9x+3)<br>​
weqwewe [10]

2x+6 - х -4

2x - x = - 4 - 6

x=-10

20x - 8 = 18x +6

20x - 18x = 6 +8

2x = 14

x=7

4 0
3 years ago
PLS HELP MY HWS DUE IN 30 MINS AND PLS SHOW WORK TY <br> find each missing measure <br> m m
bezimeni [28]

Answer:

measure is the angle right- if so it's 76 each

180-28=152

152÷2=76

5 0
3 years ago
Carter is solving for x by the process of completing the square for the following
Ksenya-84 [330]

Answer:

The number that goes in place of the question mark is 2.

Step-by-step explanation:

Let's solve it!

3x² + 12x - 24 = 0

First we can factor 3 out of each term:

x² + 4x - 8 = 0

Now we'll add 12 to both sides to complete the square:

x² + 4x + 4 = 12

And finish it off:

(x + 2)² = 12

So the answer to the question is 2

Bonus:

We can also now solve this for x:

(x + 2)² = 12

x = √12 - 2

x = 2√3 - 2

x ≈ 2 × ±1.732 - 2

x ≈ 1.464, -5.464

3 0
3 years ago
If fence poists are to be placed in a row 7 feet apart, how many posts are needed for 210 feet of fence?
ollegr [7]

Answer:

31

Step-by-step explanation:

210 ft ÷ 7 ft = 30

There are 30 7-ft lengths of fence.

Think of putting a post at the end of each 7-ft length. That means you need 30 posts. Now you must add 1 post for the beginning.

Answer: 31

8 0
2 years ago
Marcus works at an ice cream shop. He earns $10.50 each hour. Use Marcus’s timesheet for the week to answer the questions.
OLga [1]

Answer: he worked 31 hours and he earned $317.75

hope this helps :) and if it doesn’t I’m rlly sorry

7 0
3 years ago
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