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lakkis [162]
2 years ago
5

7. If cos θ= 0.866, find θ, writing your answer to the nearest degree.

Mathematics
1 answer:
Bumek [7]2 years ago
7 0

See attachment for reply and answer.

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Find the probability that a data value picked at random from a normally distributed population will have a standard score that c
DerKrebs [107]
P(z < 3)
From the normal distribution table,
P(z < 3) = 0.9987
8 0
3 years ago
It takes 4/5 of an hour to paint 2/5 of a room, how long does it take to paint one room?
BlackZzzverrR [31]

Answer:

120 min

or

2 hrs

Step-by-step explanation:

60 min=1 hr

60 min/5=12 min

12(4)=48 min

24 min=1/5 of room

24(5)=120 min

120 min=2 hrs

7 0
3 years ago
Un rombo tiene un ángulo de 22 grados. Cuanto vale la suma de sus ángulos que no midan 22 grados?
Igoryamba

Answer:

The sum of the angles that do not measure 22 degrees is equal to 316°

Step-by-step explanation:

The question in English is

A rhombus has a 22-degree angle. How much is the sum of its angles that do not measure 22 degrees worth?

we know that

The opposite internal angles of a rhombus are equal and the adjacent internal angles are supplementary

so

Let

x -----> the measure of an adjacent angle to 22 degrees in the rhombus

x+22°=180°

x=180°-22°=158°

therefore

The sum of the angles that do not measure 22 degrees is equal to

158°+158°=316°

5 0
3 years ago
Please help I'm almost done the test and need this and one other question ​
PolarNik [594]

Answer:

z=68

Step-by-step explanation:

Use the formula 180\times(n-2) to find the sum of the angles in a polygon, given <em>n</em> sides. This formula tells us the angles of this pentagon must add to 540 (180\times(5-2)=540).

So, we can setup an equation:

70+2z+11+119+z+2z=540

Solve for z:

200+5z=540 Combine like terms

5z=340 Subtract 200

z=68 Divide by 5

Therefore, the value of z = 68.

6 0
3 years ago
Write the expression as the sin or cosine of an angle.<br> sin pi/3 cos pi/7 - sin pi/7 cos pi/3
postnew [5]

sin(4π21). Explanation: Notice that this fits the form of the sine subtraction formula: sin(A−B)=sin(A)cos(B)−cos(A)sin(B).

5 0
2 years ago
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