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2 years ago

Please I need help!! Thank you

Mathematics

1 answer:

Artemon [7]2 years ago

6 0

BD=10 because it is symmetrical to AD.

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Rewrite the equation by completing the square.<br> x2 – 2x + 1 = 0

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Answer:

Step-by-step explanation:

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3 years ago

Solve the equation 2x^{2}+9x-1=x to the nearest 10th

Scilla [17]

Answer:

2x2+9x−1=x

Step 1: Subtract x from both sides.

2x2+9x−1−x=x−x

2x2+8x−1=0

Step 2: Use quadratic formula with a=2, b=8, c=-1.

−b±√b2−4ac

−(8)±√(8)2−4(2)(−1)

2(2)

−8±√72

x=−2+

√2 or x=−2+

−3

√2

Step-by-step explanation:

This is what I got but I'm not 100% positive. I checked it on a calculator and it seemed to check out.

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3 years ago

An airplane flies with a constant speed of 660 miles per hour. How far can it travel in 2 hours

bearhunter [10]

Answer:

1320 miles

Step-by-step explanation:

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3 years ago

Read 2 more answers

Find the slope of the line that passes through (-6,1) and (4,-3)

Aleonysh [2.5K]

$Slope\ formula=\frac{rise}{run}=\frac{y_2-y_1}{x_2-x_1}=\\\\\frac{-3-1}{4-(-6)}=\\\\\frac{-4}{10}=\\\\{\boxed{Slope=-\frac{2}{5}}$

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2 years ago

A complete table with values for x or y that make this equation true:3x+y=15

Reika [66]

Answer:

Table is attached

Step-by-step explanation:

We are given equation as

$3x+y=15$

We will complete each column

First column:

we are given x=2 and we have to find y

$3\times 2+y=15$

$6+y=15$

$y=9$

Second column:

we are given y=3 and we have to find x

$3x+3=15$

$3x=12$

$x=4$

Third column:

we are given x=6 and we have to find y

$3\times 6+y=15$

$18+y=12$

$y=-6$

Fourth column:

we are given x=0 and we have to find y

$3\times 0+y=15$

$0+y=15$

$y=15$

Fifth column:

we are given x=3 and we have to find y

$3\times 3+y=15$

$9+y=15$

$y=6$

Sixth column:

we are given y=0 and we have to find x

$3x+0=15$

$3x=15$

$x=5$

Seventh column:

we are given y=8 and we have to find x

$3x+8=15$

$3x=7$

$x=\frac{7}{3}$

now, we can complete table

8 0

3 years ago