3 years ago

Which nuWhich expressions result in a product that has a best estimate of 80? Select all that apply.

Mathematics

1 answer:

VMariaS [17]3 years ago

7 0

Answer:

E; 8x9 is equal to 72 which estimated is 70

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Find the x <br> Please help me and show how you got it :)

Kaylis [27]

9514 1404 393

Answer:

x = 4

Step-by-step explanation:

The parallel lines divide the sides proportionally, so ratios of corresponding sides are the same.

(x +5)/15 = (5x +1)/35

Multiplying by 105, we have ...

7(x +5) = 3(5x +1)

7x +35 = 15x +3 . . . . . eliminate parentheses

32 = 8x . . . . . . . . . subtract 7x+3 from both sides

4 = x . . . . . . . . divide by 8

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3 years ago

Which equation represents a parabola that opens upward has a minimum at x=3 and has a line of symmetry at x=3

umka2103 [35]

Answer:

$y=x^2-6x+5$

Step-by-step explanation:

Let us consider the equation $y=x^2-6x+5$

For a quadratic equation in a standard form, $y=ax^2+bx+c$ , the axis of symmetry is the vertical line $x = \frac{-b}{2a}$ .

Here in this case we have, $a=1, b=-6 , c =5$

Putting the values we get,

$x = \frac{-(-6)}{2\times 1} = \frac{6}{2} =3$

We can see that the axis of symmetry is x=3 and the graph is giving minimum at x=3.

Therefore, the required equation is $y=x^2-6x+5$ . Refer the image attached.

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3 years ago

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Suppose a plant grew 4 1/2 inches one week and 2 3/8 inches the next week. How many inches did it grow during both weeks?

jolli1 [7]

7 inches if you round up for the fractions

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What is the Measure of 3 ?

Andrews [41]

42%. It is opposite angles to the angel that says 42

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The graph below shows the relationship between the number of hours and the

Volgvan

Answer:

2.5

Step-by-step explanation:

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