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2 years ago

What is the slope of -5 = -y - 10x

Mathematics

2 answers:

dusya [7]2 years ago

8 0

Answer:-10

Step-by-step explanation:

sammy [17]2 years ago

6 0

Answer: -10

Step-by-step explanation:

the slope is ALWAYS the number that is the closest to “x”

In this case, is -10 that is the closest

At the beginning, we don’t have the line (the equation) in a slope intercept form. This is y=mx+b

We have:

b (y-intercept)= 5

mx=-10x

You don’t write the slope with the “x”, that is why I wrote slope=-10

Never do this: slope=mx (just write m, the number that is the closest)

To convert a line into a slope intercept form, you need to add.

So, we have: -5=-y-10x

First add five to the other side of the equal sign

Now we have =-y-10x+5, which doesn’t work

But we need to put “y” on the other side

Then, we add again. Add “y” to the other side

And when we add, the negative sign,now, it’s a positive sign (+=addition)

That is how you get y=-10x+5

(The order of mx and the y-int. doesn’t matter as long as they’re on the right side)

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What is the diference between a terminating decimal and repeating decimal<br> .

dangina [55]

Answer:

A repeating decimal is a decimal with no end, its constantly repeating itself

A terminating decimal is a decimal with an end

8 0

2 years ago

An English professor assigns letter grades on a test according to the following scheme. A: Top 15% of scores B: Scores below the

lisabon 2012 [21]

Answer:

59 to 66

Step-by-step explanation:

Mean test scores = u = 74.2

Standard Deviation = $\sigma$ = 9.6

According to the given data, following is the range of grades:

Grade A: 85% to 100%

Grade B: 55% to 85%

Grade C: 19% to 55%

Grade D: 6% to 19%

Grade F: 0% to 6%

So, the grade D will be given to the students from 6% to 19% scores. We can convert these percentages to numerical limits using the z scores. First we need to to identify the corresponding z scores of these limits.

6% to 19% in decimal form would be 0.06 to 0.19. Corresponding z score for 0.06 is -1.56 and that for 0.19 is -0.88 (From the z table)

The formula for z score is:

$z=\frac{x-u}{\sigma}$

For z = -1.56, we get:

$-1.56=\frac{x-74.2}{9.6}\\\\ x = 59$

For z = -0.88, we get:

$-0.88=\frac{x-74.2}{9.6}\\\\ x = 66$

Therefore, a numerical limits for a D grade would be from 59 to 66 (rounded to nearest whole numbers)

7 0

2 years ago

2x+3=x+x+3<br> Show your work

Nitella [24]

Step-by-step explanation:

2x+3=x+x+3

add the X's on the right side together.

2x+3=2x+3

subtract 2x from both sides

3=3

subtract 3 from both sides

0=0

the statement is true for any value of x

5 0

2 years ago

SOMEONE HELP ME please

olga nikolaevna [1]

Answer:

the first and second one

Step-by-step explanation:

the two last ones go over budget

1) 20×30=600 30×50=1500 total is 2100

2)50×30=1500 10×50= 500 total is 2000

3) 40×30=1200 40×50=2000 total is 3100>over budget.

4) 20×30=600 60×50=3000 total is 3600> way over budget.

3 0

1 year ago

Bruno solved the following equation: 4x + one half(10x − 4) = 6 Step Work Justification 1 4x + 5x − 2 = 6 2 9x − 2 = 6 3 9x = 8

beks73 [17]

Answer:

Statement Reason

1. $4x+5x-2=6$ 1. Distributive Property

2. $9x-2=6$ 2. Combine like terms

3. $9x=8$ 3. Addition Property of Equality

4. $x=\dfrac{8}{9}$ 4. Division Property of Equality

Step-by-step explanation:

The given equation is

$4x+\dfrac{1}{2}(10x-4)=6$

Using distributive property, we get

$4x+\dfrac{1}{2}(10x)+\dfrac{1}{2}(-4)=6$

$4x+5x-2=6$

$9x-2=6$ (Combine like terms)

Using Addition Property of Equality, add 2 on both sides.

$9x=6+2$

$9x=8$

Using Division Property of Equality, divide both sides by 9.

$x=\dfrac{8}{9}$

4 0

2 years ago