Julie needs to cut 4 pieces of yarn, each with the same length, and a piece of yarn 7.75 inches long. Let y represent the length of each of the equal pieces of yarn that Julie decides to cut. What is the equation that can be used to determine the total length of all of the yarn that she ends up cutting, t? Is the graph of the equation continuous or discrete?

Answers

Answer 1

Answer: the answer is t=4y+7.75
graph is discrete

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2 Help3x² +8x+ 5-14
Which constant would you add to the RIGHT side of the
quadratic equation in order to solve by completing the
square? Remember, this is a two-step process

Answers

ANSWER

The correct answer is D

EXPLANATION

The given quadratic expression is

$3 {x}^(2) + 8x = - 1$

Divide through by 3

${x}^(2) + (8)/(3) x = - (1)/(3)$

We now add the square of half the coefficient of x because the coefficient of the quadratic term is now unity.

The constant we would add is

${( (4)/(3) )}^(2) = (16)/(9)$

The correct answer is D

Answer: Option D.

Step-by-step explanation:

Given the quadratic equation $3x^2+8x=-1$ , you can observe that the leading coefficient is not 1, then you have to divide both sides of the equation by 3:

$(3x^2+8x)/(3)=(-1)/(3)\n\nx^2+(8)/(3)x=(-1)/(3)$

Now, you can observe that the coefficient of the x-term is $(3)/(8)$ , so you must divide it by 2 and square it. Then you get:

$(((8)/(3))/((2)/(1)))^2=(16)/(9)$

Therefore, you must add $(16)/(9)$ to both sides of the equation.

A giraffe is standing 22 feet from a naturalist hiding in the bush. The naturalist sights the animal and finds the angle of elevation is 30 degrees How tall is the giraffe?

Answers

Answer:

height = 12.7 feet

Step-by-step explanation:

To find the height of the giraffe, we just need to use the tangent relation of the angle of elevation.

The opposite side to the angle is the height of the giraffe, and the adjacent side of the angle is the distance between the giraffe and the narutalist.

So, we have that:

tangent(30) = height / distance

0.5774 = height / 22

height = 22 * 0.5774 = 12.7 feet

Answer:

12.7

Step-by-step explanation:

What is 640 times 3. Solve and then estimate.

Answers

well, the answer is 1920!

PLZ help me it's is sooo hard

Answers

I'm not sure for number one, but for number 2 the answer to that one is the second tallest on the chart or on the histogram. For number 3 I'm not sure because i cant see the numbers there too blurry. I'm sorry but i hope i got the second one correct.

Please help
will mark brainlyest