The range of the function f(x) = x + 5 is {7, 9}. What is the function’s domain?

Answers

Answer 1

Answer: f(x) = x + 5

R = {7; 9}

therefore

x + 5 = 7 nd x + 5 = 9
x = 2 and x = 4

Answer: {2; 4}

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Seven less than a number is twenty (as an equation)

Answers

You're expression is correct if it's asking for a number that is less than 7. But if the problem is asking for some number less than seven as in seven less some number, then it's 7-n. For example: 4 less than 7 is 7-4.

Hope this helps!

Given that j || k, what is the measure of the missing angle?A) 30°
B) 40°
C) 60°
D) 120°

Answers

Answer:

the measure of the missing angle is 60°

Step-by-step explanation:

GIVEN : j || k

solution :

We will use the property of linear pairs

120° + ∠1 = 180° (sum of linear pairs is 180°)

⇒ ∠1 = 180°- 120°

⇒∠1 = 60°

now since j || k

So, we can use corresponding angle properties

So, ∠? = ∠1 (corresponding angles are equal)

⇒∠? = ∠1 = 60°

Thus ? = 60°

60 degrees or C. Since the missing angle is the opposite of the 120 degree angle, 180 degrees minus(since that is the amount of degrees in a straight line, and a circle contains 360 degrees) the other angle gives you your answer.

Evaluate the expression when c=6 and y=7. 2y-c

Answers

Hey there!

2y - c

= 2(7) - 6

= 14 - 6

= 8

Therefore, your answer is: 8

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

Answer:

$= > 2y - c$

$= > 2(7) - 6$

$= > 14 - 6$

$= > 8$

The volume of a cylinder is 36 pie cubic units and its height is 4 units. find its lateral area.

Answers

V=hpir^2
V=36pi
h=4
LA=2hpir
find r then find lateral area

36pi=4pir^2
divide by 4pi
9=r^2
sqrt both sides
3=r

LA=2hpir
LA=2*4*pi*3
LA=8*pi*3
LA=24pi

lateral area=24 pi squarea units

Lucas had $272 and Kelly had $804. Both of them spent the same amount of money. The ratio of Lucas' to Kelly's money than became 2:9. How much did they spend altogether?

Answers

$x-\ money\ spend\n\n(272-x)/(804-x)=(2)/(9)\ \ \ \ | cross\ multiplication\n\n9(272-x)=2(804-x)\n\n2448-9x=1608-2x\ \ \ | add\ 2x\n\n2448-7x=1608 \ \ \ | subtract\ 2448\n\n-7x=-840\ \ \ | divide\ by\ -7\n\nx=120\n\nThey\ spend\ together\ 240\$$

Answer:

the answer for the question is 240$

Which statements about the graph of the function f(x) = 2x2 – x – 6 are true? Check all that apply.The domain of the function is .

The range of the function is all real numbers.

The vertex of the function is .

The function has two x-intercepts.

The function is increasing over the interval (, ∞

Answers

The correct answer for the question that is being presented above is this one: "The range of the function is all real numbers; The function has two x-intercepts. The statements about the graph of the function f(x) = 2x2 – x – 6 that are true includes: The range of the function is all real numbers; The function has two x-intercepts.

we have

$f(x) = 2x^(2) -x-6$