a student was given the equation x^2+6x-13=0 the next step in the students process was x^2+6x+c=13+c state the value of c that creates a perfect square trinomial explain how the value of c is determined

Answers

Answer 1

Answer: This is the process of completing the square.
Keep this equation in mind: $ax^2+bx+c$
Basically, to make this a perfect square trinomial, you take half of b and square that value. This will make it so you can compress the left side of the equation into $(x+b)^2 \ or \ (x-b)^2$ depending on the sign in the middle of the original equation.

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0.000 007 as standard form

Answers

Answer:

$\sf 7.0 * 10^(-6)$

Step-by-step explanation:

Writing in standard form or scientific form:

0.000007

As we have to move the decimal point to right, the power of 10 will be negative and as the decimal point is moved 6 times to the right, the power of 10 is (-6).

0.000007 = 7.0 *10⁻⁶

Answer: 7.0 *10⁻⁶

If 0.46 meter is cut from a 12 meter steel rod, how long is the steel rod after the cut?

Answers

The answer is 11.54 because 12.00 -00.46 is 11.54

The answer should be 11.54 because if you decrease 0.46 from 12 thats what you get

the distance between vancouver and winnipeg is 1850 km in a straight line. the distance on a map is 3.7 cm. write a scale statement for the map. what is the scale factor used to make the map?

Answers

Given:
1850 km
3.7 cm

1 km = 100,000 cm
1850 km * 100,000cm/1km = 1850 * 100,000 cm = 185,000,000 cm

scale statement: 3.7cm on the map represents 1850 km of actual distance between Vancouver and Winnipeg.

Scale factor used 3.7 cm : 185,000,000 cm or 1 : 50,000,000

185,000,000 cm ÷ 3.7 cm = 50,000,000

An electrician charges a rate of $65 per hour plus a fee of $75 for a job done during the weekend. She earned $465 for a weekend job.Part A. Enter an equation to find the number of hours, h, the electrician worked on this job.

Part B. How many hours did the electrician work?

Answers

Answer:

(465 - 75) ÷ 65

She worked for 6 hours

Step-by-step explanation:

Answer:

Step-by-step explanation:

Write a following relationship as a ratio using a colon. 2 students out of 10

Answers

We use ratios to make comparisons between two things. When we express ratios in words, we use the word "to"--we say "the ratio of something to something else." Ratios can be written in several different ways: as a fraction, using the word "to", or with a colon.

Let's use this illustration of shapes to learn more about ratios. How can we write the ratio of squares to circles, or 3 to 6? The most common way to write a ratio is as a fraction, 3/6. We could also write it using the word "to," as "3 to 6." Finally, we could write this ratio using a colon between the two numbers, 3:6. Be sure you understand that these are all ways to write the same number.

36x^2-21x-30 factor

Answers

Easy...

to even begin to factor..you must factor out a 3, to simplify your answer.

3(12 $x^(2)$ -7x-10)

Now, you can factor.

$3(12 x^(2) -7x-10)$

So..to find the answer...

12*-10=-120x
and
you would use -7x

What multiplies to -120..but adds to -7?

-15*8=-120
and
-15+8=-7

To find the answer, plug in what you know..

3(3x+2)(4x-5)

Thus, your answer.

Other Questions

Triangle XYZ has been dilated to form triangle LMN. What is the least amount of information needed to prove the two triangles are similar?a. Two pairs of corresponding angles and one pair of corresponding sides b. Two pairs of corresponding sides and one pair of corresponding angles c. Two pairs of corresponding angles d. Two pairs of corresponding sides

Triangle GHI is similar to triangle JKL. Which statement is true about the two triangles? Select one: a. Angles G and L are congruent. b. Angles H and K are proportional. c. Angles I and L are congruent. d. Angles K and J are proportional.

ANSWER ASAP PLEASE AND THANK YOU

Which functions represent exponential growth?y = f(x)y = h(x)y = g(x)y = k(x)On a coordinate plane, 4 functions are on the graph. Y = f (x) and y = g (x) represent exponential decay, and y = h (X) and y = k (x) represent exponential growth.