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3 years ago

ANSWER ASAP PLEZ I HAVE BEEN ON THESE QUESTIONS FOREVER AND PLEASE DONT JUST TAKE THE POINTS I REALLY NEED HELPPPPPPPPPPP :(

Mathematics

1 answer:

PilotLPTM [1.2K]3 years ago

8 0

Answer: For #6, domain is {-3≤x<4}, range is {-3<y≤-1}

Step-by-step explanation: For #6 domain, the leftmost point on the graph is -3, with a closed circle. This means that x is greater than or equal to -3 (-3≤x). The rightmost point is 4, with an open circle, meaning that x is less than 4 (x<4). Put them together in the standard format, and you get {-3≤x<4}. Same principle for range; lowest point is -3, with an open circle (-3<y), and highest point is -1, with a closed circle (x≤-1). Result is {-3<y≤-1}.

I'm not sure whether you are a beginner at this or if it's just this one that you're stuck on, I hope my answer was sufficient.

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The time required to do a job varies inversely as the number of people working. It takes 5hr for 7 bricklayers to build a park w

ExtremeBDS [4]

Answer

3.5 hours.

Explanation

The first step is to calculate the constant of proportionality.

t ∝ 1/n

t = k/n Where t = time, K= constant and n = number of people

t = k/n

k =tn

= 5×7 = 35

The equation becomes;

t = 35/n

for n = 10,

t = 35/10

t = 3.5 hours.

6 0

3 years ago

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My name is Ann [436]

Answer:

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Step-by-step explanation:

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2 years ago

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

nikitadnepr [17]

Answer:

The answer should be 45

Step-by-step explanation:

To get the whole are you would have to multiply the lenght with the Width and then take that answer and multiply it with the height

BUT

because you want the surface area, it would be just the lenght and width

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so 45 is your answer.

7 0

3 years ago

Which number is NOT in the solution set of the inequality x < 15?

Mrrafil [7]

Answer: it is 15

Step-by-step explanation:

4 0

3 years ago

Use the quadratic formula to solve x2 + 9x + 10 = 0. What are the solutions to the equation?

vampirchik [111]

Answer:

$\large\boxed{x=\dfrac{-9\pm\sqrt{41}}{2}}$

Step-by-step explanation:

$\text{The quadratic formula of}$

$ax^2+bx+c=0$

$\text{If}\ b^2-4a0,\ \text{then the equation has two solutions}\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\=========================================$

$\text{We have}\ x^2+9x+10=0\\\\a=1,\ b=9,\ c=10\\\\\text{substitute:}\\\\b^2-4ac=9^2-4(1)(10)=81-40=41>0\qquad _{\text{two solutions}}\\\\\sqrt{b^2-4ac}=\sqrt{41}\\\\x=\dfrac{-9\pm\sqrt{41}}{2(1)}=\dfrac{-9\pm\sqrt{41}}{2}$

5 0

3 years ago

Read 2 more answers