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3 years ago

Why isn’t there a commutative property for subtraction as well as for addition?

Mathematics

1 answer:

erma4kov [3.2K]3 years ago

8 0

Answer:

Step-by-step explanation:

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Find the value of x in each case:

kotykmax [81]

9514 1404 393

Answer:

x = 14°

Step-by-step explanation:

The triangle's interior angle at C is the supplement of the exterior angle marked 124°.

C = 180° -124° = 56°

The exterior angle at B is the sum of the remote interior angles:

6x = 56° +2x

4x = 56° . . . . . . subtract 2x

x = 14° . . . . . . . . divide by 4

6 0

2 years ago

Select all the correct answers.

MA_775_DIABLO [31]

Answer:

hi I cant answer idk why

4 0

3 years ago

Solve by factoring:<br>4x² - 8x=0

AnnyKZ [126]

Answer:

Step-by-step explanation:

4x² - 8x= 0

4x(x -2) = 0

: 4x = 0 or x - 2 = 0

4x = 0

Dividing by 4

x = 0/4

x = 0

And

x - 2 = 0

x = 2

5 0

3 years ago

1) A projectile is thrown upward so that its distance above the ground after t seconds is

leonid [27]

Answer:

After 22 seconds the projectile reach its maximum height of 4,840 units

Step-by-step explanation:

we have

$h(t)=-10t^{2}+440t$

This is a vertical parabola downward (because the leading coefficient is negative)

The vertex is a maximum

Find out the coordinates of the vertex

Convert the quadratic equation in vertex form

Factor -10

$h(t)=-10(t^{2}-44t)$

Complete the square

$h(t)=-10(t^{2}-44t+22^2)+(10)(22^2)$

$h(t)=-10(t^{2}-44t+22^2)+4,840$

Rewrite as perfect squares

$h(t)=-10(t-22)^{2}+4,840$

The vertex is the point (22,4,840)

therefore

After 22 seconds the projectile reach its maximum height of 4,840 units

4 0

3 years ago

The following graph describes function 1, and the equation below it describes function 2. Determine which function has a greater

Sergio039 [100]

Answer:

A.) Function 1 has the larger maximum at (4, 1).

Step-by-step explanation:

No step-by-step explanation, nobody pays attention to them anyway.

3 0

3 years ago