MATHEMATICS HIGH SCHOOL

Solve 5x+y=23 3x+y=17

Answers

Answer 1

Answer:

Answer:

y = 8

x = 3

Step-by-step explanation:

5x+y=23

3x+y=17

cancel out the Xs

15x + 3y = 69

-15x - 5y = -85

-2y = -16

y = 8

Plug in 8 for the Y in any of the equations it doesn't matter

3x + y = 17

3x + 8 = 17

3x = 9

x = 3

hope this helps

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Make r the subject of the formula in I=E/R+r

Answers

Step-by-step explanation:

$I = (E )/( R) + r$

$I - ( E )/( R) = r$

$(I R -E )/( R) = r$

HOPE IT HELPS Y

I need help with slope

Answers

We should know the slope formula:

m= $(y2- y1)/(x2-x1)$

Now plug in the points accordingly:
= $(-1-4)/(1-(-4))$
= $(-5)/(5)$

It can be simplified further:
$(-5)/(5)$ = -1

Slope of the line that passes through (-4,4) and (1,-1) is -1

A jar has 15 pink gumballs, 21 blue gumballs, 19 red gumballs, and 19 yellow gumballs. Which colored gumball has the least probability of being picked when a child randomly draws one out of the jar? Pink Blue Red Yellow

Answers

Pink is least represented so it has the least probability of being picked.

Pink is less likely to be chosen.

Plz help
solve for x: x/4≥−8

Answers

Answer:

x≥−32 is the correct answer

Step-by-step explanation:

Find the measure of angle ABC

Answers

In every triangle, the sum of the interior angles is 180°. The sum of the angles of this triangle is

$32+(2x-15)+(x-5) = 2x+x+32-15-5 = 3x+12$

and we want this sum to be 180, so we can write the following equation:

$3x+12 = 180$

subtract 12 from both sides:

$3x = 168$

divide both sides by 3:

$x = \cfrac{168}{3} = 56$

Now we can plug this value for x in the expressions for the two unknown angle to get their value:

$B = x-5 = 56-5 = 51,\quad C = 2x-15 = 2\cdot 56-15 = 112-15 = 97$

you will get x as 56 and angle ABC as 51°

Beth has 250 comic books in her collection She begins to sell 20 of them each week. Martin has 80 comic books in his collection. Hebegins buying 15 new comic books each week
Select from the choices below, dragging and dropping to build an inequality that could be used to determine when Martin's comic book
collection exceeds Beth's