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3 years ago

11

Help please!!! Will Mark Brainly!!!

1 answer:

Rudik [331]3 years ago

5 0

Answer:

D

Step-by-step explanation:

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I need help with direct variation equations

OLEGan [10]

4)
a) you got it correct
b) y = 70x
c) Yes
d) f(6) = 70(6) = 420
e) f(x) = 210
70x = 210
x = 210/70
x = 3
f) continuous
g)
Domain: <span>The set of </span>all possible input values<span> (commonly the "x" variable), which produce a valid output from a particular function.
</span> (-∞ , ∞)

Range: <span>The range is the set of </span>all possible output values<span> (commonly the variable y, or sometimes expressed as </span><span><span>f(x)</span><span>f(x)</span></span><span>), which result from using a particular function.
</span>(-∞ , ∞)

5)
a) y = -5x
b) Yes, go thru (0,0)
and Yes, constant rate is -5
c) Yes
d)
f(11) = -5(11) = -55
e)f(x) = -45
-5x = -45
x = 9

3 0

3 years ago

Factor 4m^2 +16m+15

PSYCHO15rus [73]

Split the second term in 4m^2 + 16m + 15 into two terms

4m^2 + 10m + 6m + 15

Factor out the common terms in the first two terms, then in the last two terms

2m(2m + 5) + 3(2m + 5)

Factor out the common term 2m + 5

(2m + 5)(2m + 3)

4 0

3 years ago

Read 2 more answers

A circle is inscribed in a square with a side length of 144. If a point in the square is chosen at random, what is the probabili

____ [38]

Given :

A circle is inscribed in a square with a side length of 144.

So, radius of circle, r = 144/2 = 72 units.

To Find :

The probability that the point is inside the circle.

Solution :

Area of circle,

$A_c = \pi r^2\\\\A_c = 3.14 \times 72^2\ units^2\\\\A_c = 16277.76 \ units^2$

Area of square,

$A_s = (2r)^2\\\\A_s = ( 2 \times 72)^2\ units^2\\\\A_s = 20736\ units^2$

Now, probability is given by :

$P = \dfrac{A_c}{A_s}\\\\P = \dfrac{16277.76}{20736}\\\\P = 0.785$

Therefore, the probability that the point is inside the circle is 0.785 .

4 0

3 years ago

During a Team scavenger hunt event, the average number of steps taken was 1800. Calculate the distance traveled using 10,000 ste

astra-53 [7]

Answer:

The average speed was of 2 miles per hour.

Step-by-step explanation:

Average speed:

Average speed is distance divided by time.

Distance:

Solved by proportions, using rule of three.

1800 steps - x miles

10,000 steps - 5 miles

$10000x = 5(1800)$

$x = \frac{9000}{10000}$

$x = 0.9$

Distance of 0.9 miles.

Using a time of 27 minutes to complete the event, calculate your average speed.

Distance of 0.9 miles in 27/60 of an hour. So

$d = \frac{0.9}{\frac{27}{60}} = \frac{60(0.9)}{27} = 2$

The average speed was of 2 miles per hour.

3 0

3 years ago

Hyperloop, a new mode of travel, aims to reach a speed of 170 m/s . This is 50% less than the speed of sound.

mariarad [96]

Answer:

The speed of sound is $340\ m/s$

Step-by-step explanation:

Let

x-----> the speed of sound

we know that

$50\%=50/100=0.50$

so

$0.50x=170$

solve for x

$x=170/0.50=340\ m/s$

5 0

4 years ago