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3 years ago

The what value complete the square for the expression x squared plus 16x

1 answer:

6 0

Take the coefficient of the x-term, half it, then square that. add this to both sides

x² + 16x. coefficient of x is 16. half of 16 is 8. 8²=64

x² + 16x + 64 =64. this is your answer but to continue

x² + 16x + 64 = 64
(x+8)² = 64
x+8 = ✓64
x+ 8 = ±8
x = 0 or -16

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Please help, I will mark you brainiest, thank you!!

Anestetic [448]

8x + 30=110
110-30=80/8=10
Your answer is x = 10

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3 years ago

Wyatt went on a 40 mile bike ride. If his average speed was 7 1/2 miles per hour, how long did his trip take?

ANTONII [103]

You would do 40 divided by 7.5

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3 years ago

Read 2 more answers

A recipe calls for 3/4 cup of butter. Angie wants to triple the recipe, but she has only 1 5/8.

Lyrx [107]

Let's start out by tripling the original recipe to see how much butter Angie needs.

$\frac{3}{4} * 3 = total$
$\frac{3* 3}{4} = total$
$\frac{9}{4} = total$
$2 \frac{1}{4} = total$

So we need $2 \frac{1}{4}$ cups of butter, but Angie only has $1 \frac{5}{8}$ . Let's subtract what Angie has from the total to see how much more she needs.

$2 \frac{1}{4} - 1\frac{5}{8} = n$
$\frac{9}{4} - \frac{13}{8} = n$
we will need the least common denominator for both fractions
$\frac{2}{2} *(\frac{9}{4}) - \frac{13}{8} = n$
$\frac{18}{8} - \frac{13}{8} = n$
$\frac{5}{8} = n$

So Angie need $\frac{5}{8}$ cups more of butter for the recipe.

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3 years ago

1.) Which functions are linear?

Harman [31]

1) linear III. y=2x+1
2) x-int, y=3x+5, y=0, 0=3x+5, 3x=-5, x=-5/3
 B.) (-5/3,0)
3)
maybe question was : What is not a function?
I. x^2+y^2=1 not function
II. y=x^2 function
III. y=4x-10 function
IV. 1/2y=3x function

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4 years ago

PLZ HELP QUICK WILL GIVE BRAINLIEST

vladimir2022 [97]

Answer: the length of the needle is 8.49 inches.

Step-by-step explanation:

The diagram of the clear cube is shown in the attached photo. From the diagram, a right angle triangle ABC is formed.

BC represents the diagonal of a face of the cube.

AB represents the the side length of the clear cube.

AB = h represents the length of the needle

To determine AB, we would apply Pythagoras theorem which is expressed as

Hypotenuse² = opposite side² + adjacent side²

Therefore

AB² = 6² + 6² = 72

AB = √72

AB = 8.49

6 0

4 years ago