2 years ago

Given that f(x) = x² +8x+3 and g(x) = -x-7, which of the following is true?

Mathematics

1 answer:

Valentin [98]2 years ago

4 0

B and C make sense to me.

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(Right angle) Trigonometry <br> please help!

kozerog [31]

Answer:

A = 41.4°

Step-by-step explanation:

Reference angle = A

Length of Adjacent side = 6

Length of Hypotenuse = 8

Apply the trigonometric function, CAH.

Cos A = Adj/Hyp

Substitute

$Cos(A) = \frac{6}{8}$

$A = Cos^{-1}(\frac{6}{8})$

A = 41.4° (approximated to the nearest tenth)

7 0

3 years ago

A cell phone company charges a monthly fee of $35 and an addition $0.20 per minute used.

kiruha [24]

Answer:

35 + .2m

Step-by-step explanation:

The monthly fee of $35 is a base pay, and you don't change anything with it.

The "m" stands for minute, and since it costs $.20 for each minute, multiply the two together to get that part of the equation.

4 0

3 years ago

What if the solution of 5/2x-7=3/4x+14?

chubhunter [2.5K]

Answer:

x=12 and if you’re looking for a fraction x= -28/3

Step-by-step explanation:

6 0

3 years ago

Find the perimeter of given figure:

Afina-wow [57]

Answer:

≈ 18 cm

Step-by-step explanation:

1. Find the length of half a circle of radius 3.5 cm:

$\tt \cfrac{C}{2}= \cfrac{2\pi r}{2}=\pi r=3.14\cdot3.5=10.99 \ cm$

2. Find the length of the diameter:

D = 2r = 2 · 3.5 = 7 cm

3. Find the perimeter of the figure:

P = 10.99 + 7 = 17.99 ≈ 18 cm

7 0

3 years ago

Yesterday 90% of mr.smiths students passed the test if he has 60 students , how many students did NOT pass?

Anit [1.1K]

Answer:

Step-by-step explanation:

60 ÷ 100 × 90 = 54 students passed

60 - 54 = 6 didn't not pass

hope this helps!

3 0

3 years ago