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Sloan [31]
3 years ago
9

In the figure, angle E measures 30°, angle F measures 57°, and angle B measures 27°. What is the measurement of angle A?

Mathematics
2 answers:
Elden [556K]3 years ago
7 0
Angle A is 66 degrees.
lidiya [134]3 years ago
7 0

Answer:

66

Step-by-step explanation:

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Consider the equation y = 3x - 1. Identify the slope and y-intercept and
tatyana61 [14]

Answer: slope=3

           y intercept :(0, -1)

Step-by-step explanation:Use the slope-intercept form to find the slope and y-intercept

4 0
3 years ago
Please help!!!!!!! Please help!!!!!! Please help!!!!!!
Nitella [24]

Answers:

  1. Discrete
  2. Continuous
  3. Discrete
  4. Continuous

==============================================

Explanations:

  1. This is discrete because we can't have half a basketball, or any non-whole decimal value to represent the number of basketballs. We can only consider positive whole numbers {1,2,3,4,...}. A discrete set like this has gaps between items. In other words, the midpoint of 2 and 3 (the value 2.5) isn't a valid number of basketballs.
  2. This is continuous because time values are continuous. We can take any two different markers in time, and find a midpoint between them. For example, the midpoint of 5 minutes and 17 minutes is 11 minutes since (5+17)/2 = 22/2 = 11. Continuous sets like this do not have any gaps between items. We can consider this to be densely packed.
  3. This is the same as problem 1, so we have another discrete function. You either score a bullseye or you don't. We can't score half a bullseye. The only possible values are {1,2,3,4,...}
  4. This is similar to problem 2. This function is continuous. Pick any two different positive real numbers to represent the amount of gallons of water. You will always be able to find a midpoint between those values (eg: we can have half a gallon) and such a measurement makes sense.

So in short, always try to ask the question: Can I pick two different values, compute the midpoint, and have that midpoint make sense? If so, then you're dealing with a continuous variable. Otherwise, the data is discrete.

7 0
2 years ago
Can someone proove it to me<br> thank you for your help
Dovator [93]

\sin(2x + x)  =  \sin(2x)  \cos(x) +  \\  \cos(2x) \sin(x) = 2 \sin(x) { \cos(x) }^{2} \\  +  \sin(x) { \cos(x) }^{2} -  { \sin(x) }^{3}   =  \\ 3 \sin(x)  { \cos(x) }^{2}  -  { \sin(x) }^{3}  =  \\ 3 \sin(x)  - 3 { \sin(x) }^{3}  -  { \sin(x) }^{3}  =  \\ 3 \sin(x)  - 4 { \sin(x) }^{3}
3 0
3 years ago
Fifteen 2 inch nails weigh 35 grams. How many of these nails weigh 175 grams? Can you explain how to do this please thankyou so
polet [3.4K]
Solving:

1) Pass: Make the rule three (Directly proportional) 

Two inch nails ______ grams (<span>Weight)
</span>15 ----------------------------35
n ----------------------------- 175

2) Pass: <span>Multiply cross
</span>
35*n = 15*175

3) Pass: Simplify
35*n = 15*175
35n = 2625
n =  \frac{2625}{35}
\boxed{n = 75}

Answer:
75 nails weigh 175 grams



8 0
3 years ago
A pentigonal prism is cut by a plane perpendicular to the base. What is the shape of the cross section that is formed ?
Sholpan [36]

Answer:

In a right pentagonal prism, the bases are pentagons and the lateral faces are rectangles. If we take a cross-section perpendicular to the base, this same cross-section will be parallel to the lateral faces. This means it will be the same shape as the lateral faces, which is a rectangle.

Step-by-step explanation:

5 0
3 years ago
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