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2 years ago

What are the domain and range of the function fx) = VX-7 +9?

Mathematics

2 answers:

garik1379 [7]2 years ago

5 0

Answer:

domain: x ≥ 7

range: f(x) ≥ 9

Step-by-step explanation:

edg 2021

dimulka [17.4K]2 years ago

3 0

Answer:

domain: x ≥ 7

range: f(x) ≥ 9

Step-by-step explanation:

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Renee hiked for 3 3/4 miles. After resting, Renee hiked back along the same route for 2 1/4 miles. How many more miles does Rene

Shtirlitz [24]

Answer:

1 1/2 miles

Step-by-step explanation:

3 3/4 - 2 1/4..

3/4 - 1/4 = 2/4=1/2

3-2= 1

1+1/2=1 1/2 miles

3 0

2 years ago

A rectangular prism is 4 metters long, 5 meters wide, and has a height of 7 meters, What is the surface area?

Natalija [7]

Hello! I believe the Surface Area to a rectangular prism= 2(4x5+5x7+4x7). Let me know if i'm wrong. Anyways hope this helps!

5 0

3 years ago

An arched drainage culvert can be modelled by the function:

Zanzabum

Substitute 136.5 for y.

$136.5=\frac{x(191-x)}{60}$

$8190=x(191-x)$

$8190=191x-x^{2}$

$x^{2} -191x+8190=0$

Compare this equation with $ax^{2} +bx+c=0$

a = 1, b = - 191, c = 8190

$x=\frac{-b+\sqrt{b^{2}-4ac } }{2}$ or

$x=\frac{-b-\sqrt{b^{2}-4ac } }{2}$

$x=\frac{191+\sqrt{191^{2}-4(1)(8190) } }{2}$ or

$x=\frac{191-\sqrt{191^{2}-4(1)(8190) } }{2}$

$x=\frac{191+\sqrt{36481-32760 } }{2}$ or

$x=\frac{191-\sqrt{36481-32760 } }{2}$

$x=\frac{191+\sqrt{3721 } }{2}$ or

$x=\frac{191-\sqrt{3721 } }{2}$

$x=\frac{191+61}{2}$ or

$x=\frac{191-61}{2}$

$x=\frac{252}{2}$ or

$x=\frac{130}{2}$

x = 126 or x = 65

Hence, the points on the curve are (65, 136.5) and (126, 136.5).

The width of the air space is the distance between these points.

Width = $\sqrt{(x_{2}- x_{1})^{2} +( y_{2}- y_{1}) ^{2}$

= $\sqrt{(126- 65)^{2} +(136.5-136.5) ^{2}$

= 126 - 65

= 61

Hence, width of the air space is 61m.

5 0

3 years ago

The model shows the expression 20 + 16. Which expression is equivalent to this sum?

Natali5045456 [20]

Answer:

4(5+4)

Step-by-step explanation:

4(5+4) equals 36, and 20 + 16 equals 36 as well, so therefore 20 + 16 is equivalent to 4(5+4)

4 0

2 years ago

Read 2 more answers

Ahmad Conan deposited 60 quarters, 53 dimes, 44 nickels, and 50 pennies into his checking account. The total of the checks he de

Galina-37 [17]

Answer:

40 $

Step-by-step explanation:

He first deposited 60 quarters=15$, 53 dimes=5.3$, 44 nickels=2.2$, and 50 pennies=0.5$ Total 23$

23$+17$=2*(total deposit)

so total deposit = 20

"If Ahmad received 2 twenty-dollar bills in cash" - does not mean that he deposited those 40$

so total deposit = 20$

4 0

2 years ago