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IgorC [24]
3 years ago
6

The water level in a vat changed by −9.9 inches in 2.25 hours as the vat was drained. What is the average change in the vat's wa

ter level per hour?
Mathematics
2 answers:
Assoli18 [71]3 years ago
8 0
-9.9 / 2.25 = -4.4 inches per hr
icang [17]3 years ago
6 0

Answer:

-9.9/2.25= -4.4 inches

Step-by-step explanation:

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Find mA in abc if mB = 38° and cmC = 38°
vivado [14]

Answer:

The sum of three angles in triangles are 180 degrees so

if there is triangle ABC,

A+B+C=180

A+38+38=180

A=104

6 0
2 years ago
A blimp is 1500 meters high in the air and measures the angles of depression to two stadiums to the west of the blimp. If those
grigory [225]
Let stadium 1 be the one on the left and stadium 2 the one on the right.

Angle above stadium 1 is 72.9° and the angle above stadium 2 is 34.1° using the angle property of alternate angles(because both the ground and the dotted line are parallel).

For the next part we need to use the trigonometric function of tangent.

As tan x = opposite / adjacent,
Tan 72.9°=1500/ adjacent ( the ground from O to stadium 1)

Therefore the adjacent is 1500/tan 72.9°= 461.46 m( to 5 s.f.)

Same for the next angle,
Tan 34.1°=1500/ adjacent ( the ground from O to stadium 2)

Therefore, the adjacent is 1500/tan 34.1° = 2215.49 m (to 5 s.f.)

Thus, the distance between both stadiums is 2215.49-461.46= 1754.03 m

Correcting the answer to whole number gives you 1754 m which is the option C.
4 0
3 years ago
Help please <br> f − –7/3 = 3
jonny [76]

Answer:

f=2/3

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Please Help!! I will give brainliest to the quick and correct answer
klio [65]

Answer:

The correct option is the graph on the bottom right whose screen grab is attached (please find)

Step-by-step explanation:

The information given are;

The required model height for the designed clothes should be less than or equal to 5 feet 10 inches

The equation for the variance in height is of the straight line form;

y = m·x + c

Where x is the height  in inches

Given that the maximum height allowable is 70 inches, when x = 0 we have;

y = m·0 + c = 70

Therefore, c = 70

Also when the variance = 0 the maximum height should be 70 which gives the x and y-intercepts as 70 and 70 respectively such that m = 1

The equation becomes;

y ≤ x + 70

Also when x > 70, we have y ≤ \mid-x + 70\mid   with a slope of -1

To graph an inequality, we shade the area of interest which in this case of ≤ is on the lower side of the solid line and the graph that can be used to determine the possible variance levels that would result in an acceptable height is the bottom right inequality  graph.

6 0
3 years ago
A three‐digit number satisfies the following conditions: The digits are consecutive whole numbers in increasing order; the sum o
IRINA_888 [86]
Answer: 123
They have to add up to 3 4 5 6 or 7 so it has to be that
4 0
3 years ago
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