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xxMikexx [17]
2 years ago
13

Find the value of the following expression:

Mathematics
1 answer:
Vesnalui [34]2 years ago
6 0

Answer:

The final value of the expression is 149

Step-by-step explanation:

sry if its wrong

have a good day!

-XxMissNobodyxX

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What the equivalent Fahrenheit temperature of 78 degrees Kelvin? *
kenny6666 [7]

Answer:

298.706 K

Step-by-step explanation:

6 0
3 years ago
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backyard garden rectangular in shape. determine the best length and width(in feet). how many feet of fencing would be needed? us
olga2289 [7]
L = building side
W = non-building side

P = 2W + L = 42 (note only one L because the other L is the building itself)

Solve for L:

L = 42 - 2W


Area = l*w
Area = (42-2W)W = 42W - 2W2

Let area be y, so y = -2W2 +42W

Note this is a parabola pointing down because the coefficient of the W2 is negative. That makes the vertex the maximum for which we are searching.

Vertex of this parabola is at W=-b/2a, if the quadratic is aW2 + bW + c = 0

a = -2
b = 42

W = -42/(2*-2) = -42/-4 = 10.5

W = 10.5
L = 42-2(10.5) = 42-21 = 21

Area = L*W = 21 * 10.5

A = 220.5 ft2
8 0
3 years ago
2 3 − 5 6 ·8<br><br> Simplify.
Helga [31]

Answer:

-1.33 and so on

Step-by-step explanation:

Take each fraction and plug it into a calculator. 2/3 is really 2 divide by 3. Same with the 5 and 6. You should get 0.67 and so on for 2/3 and 0.83 and so on for the 5/6. Subtract as shown in the problem. You should get 0.67-0.83= -0.1666 so on. Multiply by 8 to get -1.33 and so on. The "and so on" means this decimal is repeating. Hope this Helps!

5 0
3 years ago
Read 2 more answers
Which graph represents the equation x2 8y
LekaFEV [45]

Therefore by making a line through following points we can make graph which is parabola in shape

<h3>What is equation ?</h3>

Two things are equal, according to an equation. Like this: 9 + 2 = 11 . It will have an equivalent sign "=". According to that equation, "this equals that" is expressed as "what is on the left (9 + 2) is equal to what is on the right (11).

Here,

Given Equation : x² = 8y

Given Equation agrees with conventional equation of parabola on positive y-axis

x² = 4ay

Comparison of the two equations yields,

4a = 8 ⇒ a = 2

Focus of parabola = ( 0 , 2 ) ( 0 , 2 )

Parabola vertex equals ( 0 , 0 )

Axis of Symmetry = y-axis

To sketch its, we find some points

with x = 4 or -4 we get

4² = 8y ⇒ 16 = 8y ⇒ y = 2

So, points are ( 4 , 2 ) and ( -4 , 2 ) ( -4 , 2 )

we obtain when x = 8 or -8.

(-8)² = 8y ⇒ 64 = 8y ⇒ y = 8

So, points are ( 8 , 8 ) and ( -8 , 8 ) ( -8 , 8 )

Therefore by making a line through following points we can make graph which is parabola in shape

To know more about equation , visit

brainly.com/question/10413253

#SPJ4

The correct question is :-

Which graph represents the equation x2 = 8y?

3 0
2 years ago
Imagine the average time to complete a 4-year bachelor degree is actually 4.7 years, based on national data. You collect data on
rusak2 [61]

Answer:

-0.67

Step-by-step explanation:

Given that :

Population mean, μ = 4.7

Sample size, n = 68

Sample mean, M = 4.3

Sample standard deviation, s = 0.6

The effect size, d can be obtained using the relation :

d = (M - μ) / s

d = (4.3 - 4.7) / 0.6

d = - 0.4 / 0.6

d = - 0.66666

d = - 0.67

Hence, effect size associated with a single-sample t test is - 0.67

8 0
3 years ago
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