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BabaBlast [244]
3 years ago
7

Expand and simplify (x+3)(x+5)

Mathematics
1 answer:
frosja888 [35]3 years ago
5 0
Distribute
x^2 + 5x+ 3x+ 15
Add like terms
x^2+8x+15
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Solve the inequality 3 - 5(2x + 1) 10.
inn [45]
3 - 50(2x + 1)
3 - 100x - 50
-100x + (3 - 50)
-100x - 47
7 0
3 years ago
Find the vertex of the parabola. y = -4x2 - 16x - 11
emmasim [6.3K]
The standard equation is y=ax^2+bx+k and the vertex way is y=a(x-h)(x-h)+x
so the coordinate for x is -b/2a, for your problem a=-4   b=-16 so the coordinate for x is -(-16)/(2*(-4))=-2. Now you have to replace x=-2 in your equation y=-4(-2)^2-16(-2)-11= 5.
The vertex is (-2, 5)
5 0
4 years ago
I REALLY NEED HELP ILL MARk BRANLIEST AND IVE MADE IT EXTRA POINTS
fiasKO [112]

Answer:

142 degrees

Step-by-step explanation:

Easy, 180 degrees in a triangle... so 180-73-69 is 38... now two angles combined on a staight line is also 180 degrees. So now 180 degrees minus 38 is 142 degrees.

5 0
3 years ago
Read 2 more answers
What are the domain and range of the function below
Alina [70]

Answer:

<u>domain</u>: all real numbers

<u>range</u>: all real numbers greater than -2

Step-by-step explanation:

The domain is all the possible numbers that x, or the inputs to the function, can be. It looks like this function goes on forever both left and right, so its domain is all real numbers.

The range is all the possible numbers that y, or the outputs to the function, can be. It looks like this function starts growing at a y-value of -2 and then goes on forever, so its range is all real numbers greater than -2.

Hopefully that was helpful! :)

6 0
2 years ago
FIRST ONE TO ANSWER RIGHT AND EXPLAIN HOW THEY GOT THAT ANSWER WILL BE MARK BRAINIEST
Vikentia [17]

Answer: The percent error=16%


Step-by-step explanation:

Estimated amount of liquid in a container = 50 ml

Actual amount of liquid in the container = 43 ml

We know that the percent error = \frac{|estimated\ value-actual\ value|}{actual\ value}\times100

By substituting the values in the formula, we get

The percent error=\frac{|50-43|}{43}\times100

⇒The percent error=\frac{7}{43}\times100=0.1627\times100

⇒The percent error=16.27\%\ \approx16\%

∴ The percent error=16%

4 0
4 years ago
Read 2 more answers
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