1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
valina [46]
3 years ago
8

Pleaseeeee help!!!!!

Mathematics
1 answer:
solong [7]3 years ago
8 0

Answer:

.71

Step-by-step explanation:

We only need to look at the brown eyes row

2+2+10 =14

Brown hair is 10

P(brown hair) = brown hair / total

                        =10/14 =5/7 = .714285714

You might be interested in
((a^-1)/ (b^-1) square root a)
kari74 [83]
So the problem ask to calculate and covert the said equation or expression to the form of ca^pb^q where as all of the variables is a number. So base in that information and following some formula, the answer would be a^(-3/2)b. I hope you are satisfied with my answer 
3 0
3 years ago
Read 2 more answers
Felicia paid $125 to join a tennis club. She pays ana additional $5 every time she uses
nydimaria [60]
C=5n+125
Domain :n=0,1,2,3...
Range:C ≥125
5 0
3 years ago
What are the exact solutions of x2 − 5x − 7 = 0, where x equals negative b plus or minus the square root of b squared minus 4 ti
Marat540 [252]

Answer:

x = \frac{5 + \sqrt{53}}{2}  or  x = \frac{5 - \sqrt{53}}{2}

Step-by-step explanation:

Given

x^2 - 5x - 7 = 0

Required

Solve for x using:

x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}

First, we need to identify a, b and c

The general form of a quadratic equation is:

ax^2 + bx + c = 0

So, by comparison with x^2 - 5x - 7 = 0

a = 1     b = -5      c = -7

Substitute these values of a, b and c in

x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}

x = \frac{-(-5) \± \sqrt{(-5)^2 - 4 * 1 * -7}}{2 * 1}

x = \frac{5 \± \sqrt{25 +28}}{2}

x = \frac{5 \± \sqrt{53}}{2}

Split the expression to two

x = \frac{5 + \sqrt{53}}{2}  or  x = \frac{5 - \sqrt{53}}{2}

To solve further in decimal form, we have

x = \frac{5 + 7.28}{2}  or  x = \frac{5 - 7.28}{2}

x = \frac{12.28}{2}  or  x = \frac{-2.28}{2}

x = 6.14 or x = -1.14

4 0
3 years ago
18. cos t(sec t - cos t)
Margarita [4]
\bf sin^2(\theta)+cos^2(\theta)=1\implies sin^2(\theta)=1-cos^2(\theta)\\\\
sec(\theta)=\cfrac{1}{cos(\theta)}
\\\\
-----------------------------\\\\
cos(t)[sec(t)-cos(t)]\implies cos(t)sec(t)-cos(t)cos(t)
\\\\\\
cos(t)\cdot \cfrac{1}{cos(t)}-cos^2(t)\implies 1-cos^2(t)\implies \boxed{sin^2(t)}
8 0
4 years ago
The mean of a population being sampled is 64, and the standard deviation is 6. If the sample size is 50, the standard error of t
Serjik [45]
Given:
mean = 64
standard deviation = 6
sample size = 50

Standard error of the sample mean = standard deviation / √sample size

Standard error = 6 / √50 = 6/7.07 =<span> 0.85</span>
8 0
4 years ago
Read 2 more answers
Other questions:
  • Write an algebraic expression for the given word expression:<br> 6.8 increased by a number r
    8·1 answer
  • he wholesale club sells a large box of crackers with 12 reams of crackers for $9.89. Your local store’s box of crackers has 4 re
    11·1 answer
  • Vertical line q goes through plane H in the center at point X. Line t comes out of point X. Lines r and s are parallel and are a
    5·1 answer
  • Suppose a student carrying a flu virus returns to an isolated college campus of 7000 students. Determine a differential equation
    15·1 answer
  • How do you solve X+10y=-9 X=5y+21
    5·1 answer
  • What is x squared plus x
    14·1 answer
  • 4)<br> Write an inequality for the graph below. If necessary, use<br> &lt;= for &lt; or &gt;= for .
    14·1 answer
  • in a bag of marbles, 1/2 are red, 1/4 are blue, 1/6 are green, and 1/12 are tellow. You pick a marble without looking. The marbl
    9·2 answers
  • THIS IS DUE TODAY PLS PLS PLS HELP ME ON IT :(
    12·2 answers
  • Simplify each of the expressions below. Which of the expressions have a value between 100 and 200? Select all that apply.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!