MATHEMATICS HIGH SCHOOL

Solve the equation for x. 2 3 x −1 9 x + 5 = 20 x =

Answers

Answer 1
Answer:

Answer:

5/2

Step-by-step explanation:

23x-19x+5=2x

23x-19x-2x=5

2x/2=5/2

x=5/2
Answer 2
Answer:

Answer: The correct answer is 27

Step-by-step explanation: EDGE 2022

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Is 127 rational or irrational​

Answers

Answer:

rational

Step-by-step explanation:

Hey there!

ANSWER: rational

EXPLANATION:

127 is a rational number because it can be the quotient of two integers. 127/1=127. An irrational cannot be the quotient of two integers. So therefore, the number 127 is a rational.

Hope this helps :)

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We are interested in the dimensions of a certain square. A rectangle has length twice the side of this square and width three units less than the side of this square. If the two areas are equal, what are the square's dimensions (w x h)?

Answers


We don't need the length AND width of the square.  One number
will be enough for an answer, because all sides of a square have
the same length.  Let's call that number ' M ' (for 'mystery number').

-- The area of the square is  M² .

The question says that ...
-- The length of the rectangle is  2M .
-- The width of the rectangle is  (M - 3) .

Therefore ...
-- The area of the rectangle is  (2M)(M - 3)  =  2M² - 6M .

The question also says that ...
-- The areas of the square and the rectangle are equal:

So                                            2M² - 6M = M²

Subtract  M²  from each side:    M² - 6M = 0

Divide each side by  M :            M  -  6  =  0

Add  6  to each side :                 M  =  6 .


Check:

Assume ... Side of the square = 6

Then ...
Area of the square = 6² = 36 .
Length of the rectangle = (6 x 2) = 12
Width of the rectangle = (6 - 3) = 3
Area of the rectangle = (12 x 3) = 36

                 36  =  36                  yay! 

PLZZZ ANSWERR 20 points Select correct answerIn the figure, angle A measured 41* and angle D measures 32*. What is the he measurements of angle E

Answers

It’s 10 points not 20
Explanation

Which answer shows this equation in standard form?6 – 2(x – y) = –3x + 5
A.
x + 2y = –1
B.
x + 2y = 1
C.
x – 2y = 1
D.
–5x + 2y = –1

Answers

6 - 2(x-y) = -3x + 5
6 - 2x - 2y = - 3x + 5
6 - x - 2y = 5
-x - 2y = -1
x + 2y = 1

Your answer is B

If Ying Zyiyu covers the first 200 miles of a trip going at 50 mph and the last hundred going 40 mph, what was his average speed for the entire trip?

Answers

the person covers different distances at different speeds

to find the average speed we have to find the total distance travelled and the total time taken

average speed = total distance travelled / total time taken


first 200 miles

speed - 50 mph

time taken for 50 miles - 1 hour

then time for 200 miles - 1/50 x 200 = 4 hours


last 100 miles

speed - 40 mph

time taken for 40 miles - 1 hour

time for 100 miles - 1/40 x 100 = 2.5 hours


total time taken for a distance of 300 miles - 2.5 + 4 = 6.5 hours


average speed = 300 miles / 6.5 hours = 46.2 mph

average speed is 46.2 mph

Simplify the expression.1. (-7w)³

Simplify the expression.
2. (3t²) (-5+6)

Simplify the expression.
3. (6y²)³

Answers

(-7w)^3 = -7w * -7w * -7w = -343w^3
(3t^2)(-5 + 6) = (3t^2)(1) = 3t^2
(6y^2)^3 = 6^3 y^(2 * 3) = 216y^6
1. (-7w)^3=-343 w^(3) \n 2. (3 t^(2) ) (-5 t^(6) )=-15 t^(8) \n 3. (6y^2)^3=216 y^(6)
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