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lukranit [14]
3 years ago
10

28521 to the nearest tenth

Mathematics
1 answer:
ICE Princess25 [194]3 years ago
7 0
28520 is your answer
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I need help with question 1b
Lunna [17]

5 + 10 + 12 = 27 scores are less than 3

8 0
3 years ago
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6. The area of a rectangular sheet of paper is 300 cm squared. The length is 5 cm more than the width
konstantin123 [22]

Answer:

Step-by-step explanation:

width = x

length= x + 5

a)  x + 5

b) x * (x+5) = 300

x^2 + 5x = 300

x^2 + 5x - 300 = 0

Δ = 25 + 1200 = 1225

width = (-5 + 35)/2 = 15 cm

lenght = 15 + 5 = 20 cm

8 0
3 years ago
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HELP PLEASE! Write a quadratic function that passes through the point (-1,9), has an axis of symmetry of x=-3 and a minimum valu
xxTIMURxx [149]

Answer:

y = \frac{1}{2}x^{2} - 3x + 11.5

Step-by-step explanation:

Vertex form of a quadratic equation;

y = a( x - h )^{2} + k

Vertex of the parabolas (h, k)

The vertex of the parabola is either the minimum or maximum of the parabola. The axis of symmetry goes through the x-coordinate of the vertex, hence h = -3. The minimum of the parabola is the y-coordinate of the vertex, so k= 7. Now substitute it into the formula;

y = a ( x + 3 ) ^{2} + 7

Now substitute in the given point; ( -1, 9) and solve for a;

9 = a( (-1 ) + 3)^2 + 7\\9 = a (2)^{2} + 7\\9 = 4a + 7\\-7           -7\\2 = 4a\\\frac{1}{2} = a\\

Hence the equation in vertex form is;

y = \frac{1}{2}(x - 3)^{2} + 7

In standard form it is;

y = \frac{1}{2}x^{2} - 3x + 11.5

7 0
3 years ago
What is the value of the expression 9 − ( fraction 1 over 2 )4 ⋅ 48?
Sergeu [11.5K]

Answer:

9 - (1/2)^4 x48

9 - 1/16 x 48

9 - 3 = 6

Step-by-step explanation:

4 0
2 years ago
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Need help with math
podryga [215]

I have no idea math should have been working hade books bye sorry

4 0
2 years ago
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