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2 years ago

Hello again. Can someone please help me with this as well. I'll give 100 points!

Mathematics

2 answers:

Aleks04 [339]2 years ago

8 0

Answer: Come on, don’t people learn these things in school!

Step-by-step explanation:

aev [14]2 years ago

6 0

Answer:

C. y ≤ 0

D. 18 bags of chips and 6 jars of salsa

Step-by-step explanation:

It is C because, it is over the x axis and it covers all the negative y's.

__________________________________________________________

2.5x + 4y ≤ 60

2.5(10) + 4(2) ≤ 60

25 + 8 ≤ 60

33 ≤ 60

It fits so A doesn't work

2.5x + 4y ≤ 60

2.5(20) + 4(2) ≤ 60

50 + 8 ≤ 60

58 ≤ 60

It fits so B doesn't work

2.5x + 4y ≤ 60

2.5(14) + 4(5) ≤ 60

35 + 20 ≤ 60

55 ≤ 60

It fits so C doesn't work

2.5x + 4y ≤ 60

2.5(18) + 4(6) ≤ 60

45 + 24 ≤ 69

It doesn't fit therefore, your answer would be D. 18 bags of chips and 6 jars of salsa.

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A. 81. B. 27 C. 108 D. 135

Zanzabum

Answer:

D 135

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8 0

2 years ago

Read 2 more answers

Change 3/25 from a mixed number to an improper fraction.

kvasek [131]

Answer:

17/5

Step-by-step explanation:

HOPE I HELPED :)

5 0

2 years ago

The height, h, of a cylinder is 5 units less than 3 times its radius, r. which expressions represents the height of the cylinder

Helga [31]

Answer:

Step-by-step explanation:

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4 0

3 years ago

A plane is flying at a heading of 125° at a speed of 320 mph. The wind is blowing from due North at a speed of 35 mph. Find the

ad-work [718]

Answer:

$301.29\ \text{mph}$

$119.5^{\circ}$

Step-by-step explanation:

$v_p$ = Velocity of plane = 320 mph

$v_w$ = Velocity of wind = 35 mph

$\theta$ = Angle between wind and plane directions = $125^{\circ}$

From triangle law we have resultant

$v_r=\sqrt{v_p^2+v_w^2+2v_pv_w\cos\theta}\\\Rightarrow v_r=\sqrt{320^2+35^2+2\times 320\times 35\cos125^{\circ}}\\\Rightarrow v_r=301.29\ \text{mph}$

Direction is given by

$\phi=\tan^{-1}\dfrac{v_p\sin\theta}{v_w+v_p\cos\theta}\\\Rightarrow \phi=\tan^{-1}\dfrac{320\sin125^{\circ}}{35+320\cos125^{\circ}}\\\Rightarrow \phi=-60.46^{\circ}=180-60.46=119.5^{\circ}$

The magnitude of the plane is $301.29\ \text{mph}$ moving at an angle of $119.5^{\circ}$ .

8 0

2 years ago

Suppose a batch of steel rods produced at a steel plant have a mean length of 178178 millimeters, and a standard deviation of 12

tatuchka [14]

To solve this problem we use the z statistic. The formula for z score is:

z = (x – u) / s

where,

x = sample value mean = 178 – 0.56 = 177.44 mm

u = total sample mean = 178 mm

s = standard deviation = 12 mm

z = (177.44 – 178) / 12

z = -0.05

from the tables P (z = -0.05) = 0.484

So the probability P is: [multiply by 2 since we account the two sides)

P = (0.5 – 0.484) * 2 = 0.0320

7 0

3 years ago