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seraphim [82]
3 years ago
13

In civics, 5 of 12 freshmen have brown hair and 6 out of 15 sophomores have brown hair. What is the probability of randomly sele

cting a sophomore or someone with brown hair?
Mathematics
1 answer:
victus00 [196]3 years ago
5 0

Answer: 20/27

Step-by-step explanation: 15/27 + 5/27= 20/27

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3 friends are sharing 1/2 of a blueberry ....how much pie would each friend get
melisa1 [442]

Answer:

each friend would get 1/6 when you divide 1/2 by 3

Step-by-step explanation:

3 0
4 years ago
The maximum weight M that can be supported by a beam is jointly proportional to its width w and the square of its height h, and
Anettt [7]

Answer:

Step-by-step explanation:

a) The maximum weight M that can be supported by a beam is jointly proportional to its width w and the square of its height h, and inversely proportional to its length L. If k represent the constant of proportionality, the expression would be

M = kwh²/L

b) if w = 4 inches, h = 6 inches, length = 12 ft

1 foot = 12 inches

12 ft = 12 × 12 = 144 inches. Therefore

L = 144 inches

M = 4800lb

Substituting these values into

M = kwh²/L, it becomes

4800 = (k × 4 × 6²)/144

4800 = k

The equation becomes

M = 4800wh²/L

c) if L = 10ft(10 × 12 = 120 inches),

h = 10 inches

w = 3 inches, then

M = 4800 × 3 × 10²/120

M = 12000 lbs

4 0
3 years ago
In a linear equation relating income and consumption, you know that the intercept is $1,000 and the slope of the line is 4. if i
Amiraneli [1.4K]
A general equation of a linear function is expressed as y = mx + b where m represents the slope and b is the y-intercept. The slope is the rate of change of y with respect x which is equal to 4 for this problem. The y-intercept represents the value when x is equal to zero. It is the initial value of y. In this case, it is equal to $1,000. The linear equation would be:

y = 4x + 1000

assuming y is the income and x is the consumption.

At an income (y) equal to $20,000, we can calculate for the consumption.

20000 = 4x + 1000
19000 = 4x
x = 4750
3 0
3 years ago
What is the x-coordinate of the vertex of the parabola whose equation is y = 3x2 + 9x?
inn [45]
Hello :
y = 3x²+9x
   = 3(x² + 3x )
   = 3 ( x² +2(3/2)x +(3/2)²) -(3/2)²)
   = 3((x+3/2)² -9/4)
y = 3 (x+3/2)² -27/4
<span>the x-coordinate of the vertex  is : - 3/2</span>
8 0
3 years ago
Read 2 more answers
Which trigonometric function has the same value as sin 75?
Sonbull [250]
The answer would be tan (44).

For sin (75)
The answer will be computed this way:
sin 75º = sin (30)º + 45º= sin 30 cos 45+cos 30 sin 45= 1/2*√2/2+√3/2*√2/2=√2/4+√6/4=(√2+√6)/4Check with calculator:sin 75º ≈ 0.9659

For tan (44): checking with the calculator the answer is also: ≈ 0.9659


6 0
3 years ago
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