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4 years ago

Solve for y . =−5y-15=35

Mathematics

2 answers:

Gemiola [76]4 years ago

4 0

The answer : -5y-15=35
-5y=35+15
-5y=50
-5/-5y=50/-5
y=-10

4vir4ik [10]4 years ago

3 0

$-5y-15=35 \\ -5y=35+15 \\ -5y=50 /:5\\ -y=10 \\ y=-10$

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What is the percent of change from 10 to 5?

NNADVOKAT [17]

Answer:

50% decrease

Step-by-step explanation:

$\dfrac{(V_2-V_1)}{|V_1|} \times 100$

$= \dfrac{(5 - 10)}{|10|} \times 100$

$= \dfrac{-5}{10} \times 100$

$= -0.5 \times 100$

$= -50\% \; \text{change}$

$= 50\% \; \text{decrease}$

8 0

3 years ago

Read 2 more answers

If the outliers are not included, what is the mean of the data? 76,79,80,82,50,78,83,79,81,82.

natta225 [31]

50 is the only outlier so take 50 out of the set then add the other 9 data points and divide by 9.
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3 years ago

Write an equation for each line.

Tems11 [23]

Answer:

Step-by-step explanation:

Equation of blue line:

blue line is parallel to y-axis

⇒ x = 5

Equation of green line:

Green line is parallel to x-axis.

y = 2

Equation of red line:

At y-intercept x = 0. Point on red line is (0,5)

So, y-intercept = 5

y = mx + b Here, m is slope any b is y-intercept.

y = mx + 5

Now, choose any other point in red line. ((1,7)

Substitute this value in the above equation and we can find m

7 = m*1 + 5

7 - 5 = m

m = 2

y = 2x + 5

Equation of black line:

Black line and red line are parallel and so, they have same slope.

y = 2x + b

y-intercept (0,-6) ; b = -6

y = 2x - 6

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2 years ago

If x=-5 what is the value of x^2-1/x+1? A. 6 b. -4 c. 4 d. 5 4/5 e. 19 need answers asap

xxTIMURxx [149]

Answer:

The answer is -6 but its not in the option

Step-by-step explanation:

$\frac{ {x}^{2} - 1 }{ x + 1}$

Let x = -5

[(-5)²-1]/(-5+1)

= (25-1)/(-4)

= 24/-4

= -6

4 0

3 years ago

In supply (and demand) problems, y is the number of items the supplier will produce (or the public will buy) if the price of the

SSSSS [86.1K]

Answer:

A) (17 ; 550)

B) $17/item

C) 550

Step-by-step explanation:

First we must calculate the intersection point of the two lines. Since in that point y has the same value in both equations, we can obtain x by equalling the two equations and then using that value for obtaining y:

$5x+465=-6x+652\\5x+6x=652-465\\11x=187\\x=\frac{187}{11}\\x=17$

So the value of x in the intersection point is 17. We now use this value with either one of the equations to obtain y. Let's use the supply equation:

$y=5*17+465\\y=550$

So the intersection point is (17 ; 550)

Supply and demand are in equilibrium when the amount of items on supply are the same as the ones on demand. That is the point were the two lines intersect, which means the selling price is the x coordinate and the amount of items is the y coordinate, so that is a selling price of $17/item with a number of items of 550.

3 0

3 years ago