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Nataly_w [17]
3 years ago
8

What is the area of a triangle when the sides are 17, 8 and 9

Mathematics
1 answer:
sleet_krkn [62]3 years ago
7 0

Answer:

ok so to solve this you need to do base x height then divide that by 2

Step-by-step explanation:

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What is the perimeter of a rectangle that is 14 feet long and 8 feet wide?
g100num [7]
Perimeter = Length+Length+Width+Width
OR
Perimeter = 2Length + 2Width
They will both get you the same answer.

Length = 14
Width = 8
P = 14 + 14 + 8 + 8 = 44 feet

Answer: D. 44 Feet


5 0
3 years ago
How to graph y = x^2+3
vesna_86 [32]

Answer:

regular parabola but shifted up 3 on the y axis

Step-by-step explanation:

7 0
3 years ago
A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only
makvit [3.9K]

Answer:

The sample size is  n = 3139    

Step-by-step explanation:

From the question we are told that

   The margin of error is  E = 0.02

From the question we are told the confidence level is  97.5% , hence the level of significance is    

      \alpha = (100 - 97.5% ) \%

=>   \alpha = 0.025

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } = 2.241

Generally we will assume the sample proportion to be \^ p = 0.5

Generally the sample size is mathematically represented as  

    n = [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \^ p (1 - \^ p )

=>  n = [\frac{2.241}{0.02} ]^2 *0.5 (1 - 0.5 )

=>  n = 3139    

   

7 0
3 years ago
If u give me the right answer I’ll give brainlist
Lemur [1.5K]

Answer:50%

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What is Y equals negative 2X plus 6 in standard form
Sergio039 [100]

Answer:

2x + y - 6 = 0

OR 2x + y = 6

Step-by-step explanation:

First write the equation given in the problem:

y = -2x + 6        This is in slope-intercept form (y = mx + b).

Standard form is written Ax + By + C = 0. When C is a negative number, you might also see it as Ax + By = -C.

The main difference between the two forms in that slope-intercept form isolates the 'y' whereas standard form equates to 0. Don't confuse the 'b' in standard from with the 'B' in slope-intercept form.

To convert from slope-intercept form to standard form, <u>move everything over to the side with 'y'</u>. When you move something, you do its reverse operation to the whole equation. (The reverse of addition is subtraction, the reverse of multiplication is division.)

y = -2x + 6         Do the reverse operations for -2x and +6

y + 2x - 6 = -2x + 2x + 6 - 6      Add 2x and subtract 6 on both sides

y + 2x - 6 = 0            Right side cancels out to be '0'.

2x + y - 6 = 0       Rewrite with the 'x' in front of the 'y'

Here you can see the new equation and what each variable in Ax + By + C = 0 is.

A = 2

B = 1              When a number is not written with the variable, it is 1.

C = -6

Some teachers ask it to be rewritten as Ax + By = -C when 'C' is a negative number.

2x + y = 6

8 0
3 years ago
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