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tester [92]
4 years ago
11

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain statistician has an IQ of 112

, what percent of the population has a lower IQ? A. 47% B. 7% C. 93% D. 79% E. 99%
Mathematics
1 answer:
maks197457 [2]4 years ago
8 0

Answer:Letter D. 79%

Step-by-step explanation:

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What is 7-4[3-(4y-5)]
drek231 [11]

Answer:

16y -25

Step-by-step explanation:

7-4[3-(4y-5)] = 7 -4(3 -4y +5) = 7 -4(-4y +8)

= 7 + 16y -32

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4 0
3 years ago
Find the equation of a line perpendicular to y=x-3 that contains the point (2,1)
murzikaleks [220]

Answer:

y = -x + 3

Step-by-step explanation:

y = x - 3   This equation has a slope of 1

A line that would be perpendicular to the above line would then need a slope of -1

If the line has a slope of -1 and passes through (2, 1) then we can plug into

y = mx + b to get the 'b' value

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Equation would be y = -x + 3

3 0
3 years ago
Help plzzzzzzzzzzzzzzzzz
alekssr [168]

Answer:

this answer is -1.8

Step-by-step explanation:

because you add and subtract all of them

6 0
3 years ago
Read 2 more answers
x^2+1/2x+1/16=4/9 Factor the perfect-square trinomial on the left side of the equation. (x + )² = 4/9
Nezavi [6.7K]
The missing number is the square-root of the constant term on the left-hand-side, which equals sqrt(1/16)=1/sqrt(16)=1/4.
Check:
(x+1/4)^2=x^2+2*(1/4)x+(1/4)^2=x^2+x/2+1/16.   ok

Answer: x= 1/4
5 0
3 years ago
Read 2 more answers
X intercept -3 and y intercept is -3
7nadin3 [17]

Answer:

y= -x -3

Step-by-step explanation:

if it is asking for equation

3 0
3 years ago
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