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KiRa [710]
2 years ago
10

Mike wants to be elected president of the 7th-grade student council. he wants to determine his chance of winning the election. w

hich would be the best way for mike to determine if he will win the election?
Mathematics
1 answer:
inn [45]2 years ago
4 0

Answer:

B. survey a random sample of 7th-grade students

Step-by-step explanation:

this answer would make the most sense because it is a example of a random statistical question.

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Please help me with expansion and factorization of quadratic expressions.<br> a) -4x^2 + 2x^2
Flura [38]

Answer:-2x^2(2-1)

Step-by-step explanation:

-4x^2 + 2x^2=-2x^2(2 - 1)

8 0
3 years ago
Please Help Will Give Brainliest
Gennadij [26K]

Answer:

1) 70 for both of them

2) Plot A's range is 100-50 = 50, Plot B's range is 100 - 40 = 60 so Plot A has the lesser range

3) Plot B's IQR is 85 - 60 = 25, Plot A's IQR is 80 - 65 = 15 so Plot B has the greater IQR

4) A: 80, B: 85

5) A: 65, B: 60

6) 50

7) 100

8) Plot B, see #2 for work

9) 50% - 50% of data is always between Q1 and Q3

10) 25%

11) 25%

8 0
3 years ago
Perform the indicated operation. -10 + 15 <br><br> -5 <br> 5 <br> 25 <br> -25
Ulleksa [173]
The answer is 5 because if you add 10 to -10 it is 0 then add the 5 more and it is 5.
8 0
3 years ago
Eliminate the parameter in the equations x = 5cos(t) – 7 and y = 5sin(t) 9. how can the rectangular equation be described?
Maksim231197 [3]

Recall that for all t,

cos²(t) + sin²(t) = 1

Now,

x = 5 cos(t) - 7   ⇒   (x + 7)/5 = cos(t)

y = 5 sin(t) + 9   ⇒   (y - 9)/5 = sin(t)

so that substituting into the identity above, we get

((x + 7)/5)² + ((y - 9)/5)² = 1

which we can rewrite as

(x + 7)²/25 + (y - 9)²/25 = 1

(x + 7)² + (y - 9)² = 25

and this is the equation of a circle centered at (-7, 9) with radius 5.

3 0
2 years ago
Write your answer in simplest radical form​
liubo4ka [24]

Answer:

x = 2 yd

Step-by-step explanation:

Angles of 45 degreees = two congruent legs

for the Pythagorean theorem

2x^2 = 8

x^2 = 4

x = 2

5 0
2 years ago
Read 2 more answers
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