All categories

2 years ago

Someone help with this plz? Will mark Brainlist

Mathematics

1 answer:

Vladimir [108]2 years ago

5 0

Answer:

here

Step-by-step explanation:

You might be interested in

Salvatori charges $9 Per hour for babysitting Kendra chargers $8.50 per hour if they both work for 6 hours How much more money w

andreev551 [17]

54 dollars would be earned

8 0

3 years ago

Read 2 more answers

Matt and Anna Killian are frequent fliers on Fast-n-Go Airlines. They often fly between two cities that are a distance of 1980

Ymorist [56]

Answer:

y (plane speed) 400 miles/hr

x (wind speed) 40 miles/hr

Step-by-step explanation:

going into the wind make the plane flew 5,5 hours to get 1980 miles, implies the real travel speed was

1980 / 5,5 = 360 miles/hours, and at the same time is the result of:

speed plane (y) in direction A to B plus wind speed (x) in direction B to A. Notice opposites direction speed, so we have:

y + (-x) = 360 (1)

The return fly took 4,5 hours so 1980/4,5 = 440 miles/ hours as the result

Y + x = 440 (2)

We have a two equation with two variables system, It could be solved for any of the procedures. We will use the substitution method.

From equation (1) y + (-x) = 360 y - x = 360 y = 360 + x (1)

In the second equation

y + x = 440 then we replace y for its value as function of x

(360 + x ) + x = 440

Solving for x 360 + 2x = 440 or 2x = 440 – 360

x (440 - 360)/2

x = 40 miles/hr

X (wind speed ) = 40 miles/hr

And replacing the value of x in eq. (1) y = 360 + 40 = 400

Y (plane speed) = 400 miles /hr

3 0

3 years ago

Double a number is equal to the number decreased by five?

kotegsom [21]

2n=n-5 subtract n from both sides

n=-5

check...

2(-5)=(-5)-5

-10=-10

6 0

3 years ago

Find the value of x to the nearest tenth tan x =5

tankabanditka [31]

Answer:

x ≈ 78.7° (in degree)

x ≈ 1.4 (in radians)

Step-by-step explanation:

Given in the question an equation

tan(x) = 5

x = $tan^{1}(5)$

x = 78.69

x ≈ 78.7°

In radian:

x ≈ 1.4

4 0

3 years ago

Read 2 more answers

Determine the graph of the polar equation r =6/2-2cos theta<br> (picture provided)

vredina [299]

Answer:

Choice D is correct

Step-by-step explanation:

The first step is to write the polar equation of the conic section in standard form by dividing both the numerator and the denominator by 2;

$r=\frac{3}{1-cos(theta)}$

The eccentricity of this conic section is thus 1, the coefficient of cos θ. Thus, this conic section is a parabola since its eccentricity is 1.

The value of the directrix is determined as;

d = k/e = 3/1 = 3

The denominator of the polar equation of this conic section contains (-cos θ) which implies that this parabola opens towards the right and thus the equation of its directrix is;

x = -3

Thus, the polar equation represents a parabola that opens towards the right with a directrix located at x = -3. Choice D fits this criteria

5 0

3 years ago