MATHEMATICS HIGH SCHOOL

What are the first four terms of the sequence given by the formula below?
an= -2n + 4

Answers

Answer 1
Answer: In order to solve this problem, We need to substitute the first four numbers (1,2,3,4) for n. After this we calculate:
First item:
a1= -2*1 + 4=-2+4=2
Second item:
a2= -2*2 + 4 =-4+4=0
Third item:
a3= -2*3 + 4 =-6+4=-2
Forth item:
a4= -2*4 + 4 =-8+4=-4

So the first 4 items are: 2,0,-2,-4..
Answer 2
Answer:

Answer:

Sequences and Series Online Practice Conexus review:

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100%, Hope this helps Y'all:)

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What is the 10th term of the pattern with general rule 6n + 11?

Answers

If 6n + 11 is the pattern, and they are asking for the 10th term in this sequence, then we have to do (6*10) + 11, which is 60 + 11, which is 71.

Answer: 71.

Evaluate the expression 8 - 3 × 2 + 5.

7
15
29
56

Answers

First, multiply 2 by 3. That will give you 6. Then, subtract 6 from 8, you'll get an answer equivalent to 2. 2 + 5 = 7.

Answer:7

Step-by-step explanation:

The vertices of a triangle are listed below.Q(-3,7), R(8,7), S(-6,-5)
Which of the following correctly classifies the triangle?

Answers

This question is a bit tedious. In order to answer it, we will have to find the distance between each vertex using the distance formula.

d² = (x - x)² + (y - y)²   Distance Formula
d² = (-3 - 8)² + (7 - 7)²   Substitute for points Q (-3,7) and R (8,7)
d² = -11² + 0²   Collect like terms
d² = 121   Square
d = 11   Take the square root of both sides to cancel out the exponent on the left

The distance between points Q and R is 11. Now let's use the formula on the rest of the points.

R and S

d² = (8 + 6)² + (7 + 5)²   Keep in mind that when you subtract a negative, it becomes a positive.
d² = 196 + 144
d² = 340
d = 18.4

Q and S

d = 12.4

This is scalene triangle, because none of the sides are equal. I was a bit rushed on this one, so you might want to check my math.

Which fraction is not equivalent to 16/24 A. 2/3 B. 5/8 C. 32/48 D. 4/6

Answers

b) 5/8
because:
2/3 x 8 = 16/24
32/48 divided by 2 = 16/24
4/6 x 4 = 16/24
so b) 5/8 it is
5/8 because 
If you divide 16 by 8 then you get 2 and if you divide 24 by 8 you get 3 this equals=2/3
32/48- If you multiply 16 by 2 you get 32, if you multiply 24 by 2 you get 48 which gives you an answer to 32/48
4/6- If you divide 16 by 4 you get an answer of 4, if you divide 24 by 4 you get an answer of 6, which gives you an answer of 4/6

What is 4,264 rounded to the nearest hundred?

Answers

Answer:

Round 4264 to the nearest hundred so the answer is 4300.

Answer:

4300

Step-by-step explanation:

For which data sets is the median a better measure of center than the mean? Choose all answers that are correct. A. Dorian drove 56, 62, 68, 71, 104, and 507 mi on 6 consecutive days. B. Mandy entered pumpkins weighing 2, 8.5, 9.2, 9.8, and 10.1 lb in the contest at the county fair. C. The winning times in each of the 5 heats of the 400-meter dash were 1:01, 1:03, 1:03.4, and 1:04.9 min. D. The bakery shop sold 46, 51, 62, and 72 cupcakes on each of the last 2 Saturdays and Sundays.

Answers

Median is a better measure of center than the mean(average)

a) 56,62,68,71,104,507 ⇒ Median is a better measure. Mean is not a better measure because of the outliers.

b) 2,8.5, 9.2, 9.8, 10.1 lb ⇒ Median is a better measure. 

c) Mean is a better measure. No outliers. Data set values are close with each other.

d) Mean is a better measure.
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