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vredina [299]
3 years ago
7

Which number expression represents 1/2 the sum of 7 and 5 please help

Mathematics
1 answer:
Bess [88]3 years ago
8 0

Answer: = ( 7+5 ) x 1/2

Step-by-step explanation:

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Which of the following is the graph of the quadratic function y - x? +10x+16 ?
Assoli18 [71]

Find the vertex:

\textrm{Use the formula } \frac{-b}{2a} \textrm{ to find the vertex}\\ \\ \frac{-10}{2} = -5\\ \\ \textrm{In order to find the y value plug in -5 back into the function}\\ \\ y=(-5)^2+10(-5)+16\\ y=-9\\\\ \textrm{The vertex of the function is} (-5,-9)

Determine if the parabola will open up or down:

a > 0 \\ \\ 1>0

Since the value of a is positive, the parabola will open upwards

Find the x and y intercepts:

Factor y = x^2+10x + 16 to find the x intercepts

(x+8)(x+2)

x + 8 = 0

x = -8

x + 2 = 0

x = -2

x intercepts:

x = -2

x = -8

Find the y intercept

y = 0^2+10(0) + 16\\\\ y=16

Hence, C. Graph A best represents the quadratic function y = x^2+10x + 16

6 0
3 years ago
(8x-4)+(17x-23)+(3x+17)=180
12345 [234]

Answer:

b

Step-by-step explanation:

b

7 0
3 years ago
What is the common ratio for this geometric sequence 27,9,3,1<br>A.1/6<br>B.6<br>C.3<br>D.1/3
iris [78.8K]
It will be D!!!!!!!!!!!!!!!!!!!!!!!!!
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kati45 [8]

Answer:

The answer is D!

Step-by-step explanation:

hope this helps

3 0
2 years ago
Carpeting costs $9.99 a yard. If Jan buys 17.4 yards, how much will it cost her? (Round your answer to the nearest hundredth)
slega [8]

Answer:

173.83

Step-by-step explanation:

17.4*9.99= 173.826

173.826 -> 173.83

8 0
3 years ago
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