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alexira [117]
3 years ago
10

4 times a number plus 9 ​

Mathematics
2 answers:
Helga [31]3 years ago
6 0

Answer:

4n+9

Step-by-step explanation:

GarryVolchara [31]3 years ago
4 0

Answer:

What is the number?

Step-by-step explanation:

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Would .75 enlarge reduce or preserve
elixir [45]

Answer:

Reduce

Step-by-step explanation:

0.75 would be making the subject smaller because it is less than one.

4 0
3 years ago
Can someone help me wit this :)
swat32
= -1/8x^5 + 8x^4 + x^2 + 3x - 7
8 0
3 years ago
The area of a square piece of tissue paper is 25 square centimeters. How long is each side?
andrey2020 [161]
5 centimeters. The area is Width times Height, and with a square the width and height are the same so just do "x²=25" and x would be 5.
6 0
4 years ago
Read 2 more answers
The boat sailed 30min upstream and sailed 60km, and returned the same distance downstream (60km) and sailed it in 20min. Find th
elena55 [62]

Answer:

Step-by-step explanation:

b and c are the speeds of the boat and current, respectively.

Traveling upstream, the boat moves b-c km per hour.

Traveling downstream, the boat moves b+c km per hour.

b-c = (60 km)/(½ h) = (120 km)/h

b+c = (60 km)/(⅓ h) = (180 km)/h

Adding the equations together,

2b = (300 km)/h

b = (150 km)/h

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7 0
3 years ago
The rational function has a y-intercept of 7. What is the equation for this function?
Schach [20]

Answer:

\large\boxed{f(x)=\dfrac{4}{x+2}+5}

Step-by-step explanation:

f(x)=\dfrac{a}{x-b}+c\\\\\text{We have}\\\text{(1) the vertical asymptote}\ x=-2.\ \text{Therefore}\ b=-2.\\\text{(2) the horizontal asymptote}\ y=5.\ \text{Therefore}\ c=5.\\\text{(3) the point (0, 7). Put the coordinates of the point to the equation}\\\text{of the function}\\y=\dfrac{a}{x-(-2)}+5\\\\7=\dfrac{a}{0+2}+5\qquad\text{subtract 5 from both sides}\\\\2=\dfrac{a}{2}\qquad\text{multiply both sides by 2}\\\\4=a\to a=4\\\\\text{Finally:}\\\\f(x)=\dfrac{4}{x+2}+5

0 0
3 years ago
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