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2 years ago

Re-write 18+28 using the distributive property

Mathematics

1 answer:

katovenus [111]2 years ago

3 0

10+8+20+8 I think this is what your asking for

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Solve for x in the diagram below. 3x 75° T =

leva [86]

Answer:
3x+75=180
3x=180-75
3x=105
x=105/3
x=35

7 0

2 years ago

Read 2 more answers

Determine if events A and B are mutually exclusive.

gladu [14]

Answer:

A) Not mutually exclusive

Step-by-step explanation:

Given

$P(A) = \frac{1}{4}$

$P(B) = \frac{3}{5}$

$P(A\ or\ B) = \frac{7}{10}$

Required

Determine if they are mutually exclusive or not

Mutually exclusive are defined by:

$P(A\ or\ B) = P(A) + P(B)$

So, we have:

$P(A\ or\ B) = \frac{1}{4} + \frac{3}{5}$

Take LCM

$P(A\ or\ B) = \frac{5+12}{20}$

$P(A\ or\ B) = \frac{17}{20}$

By comparing:

$P(A\ or\ B) = \frac{17}{20}$ ---- Calculated

$P(A\ or\ B) = \frac{7}{10}$ ---- Given

We can conclude that A and B are not mutually exclusive because:

$\frac{17}{20} \ne \frac{7}{10}$

6 0

2 years ago

WILL MARK BRAINLIEST!!!

wariber [46]

$f(x) = -9x^4 + 5x + 3\\\\ f(-x)= -9(-x)^4 + 5\cdot(-x) + 3=-9x^4-5x+3\\\\ f(-x)\not =f(x)\implies \text{ not even}\\\\ -f(x)=-( -9x^4 + 5x + 3)= 9x^4 - 5x - 3\\\\ -f(x)\not =f(-x) \implies \text{ not odd}$

Neither

4 0

2 years ago

HELP ASAP!! (picture above)

lilavasa [31]

To calculate minimum value, do -b/2a to get the x-value, and plug it in to get the y-value:

-6/8 = -3/4

$4 * (-\frac{3}{4} )^{2} + 6 (-\frac{3}{4} ) - 18 = \frac{9}{4} - \frac{9}{2} - 18 = - \frac{81}{4}$

So the minimum value of g(x) is -81/4

This shows that g(x) has a lesser minimum value than f(x)

5 0

2 years ago

Tính : a) (a+b+c)^2 b) (a-b-c)^2 c) (a+b-c)^2 d) (a-b+c)^2

LiRa [457]

Answer:

a.) a² + b² + c ² + 2ab + 2ac + 2bc

b.) a² + b² + c² - 2ab - 2 ac + 2bc

c ) a² + b² + c² + 2ab - 2ac - 2bc

d.) a² + b² + c² - 2ab + 2ac - 2bc

Step-by-step explanation:

Use ( a + b + c )² = a² + b² + c² + 2 × ab + 2 × ac + 2 × bc to expand all these expression

a) ( a + b + c )²

= a² + b² + c² + 2 × ab + 2 × ac + 2 × bc

= a² + b² + c ² + 2ab + 2ac + 2bc

b.) ( a - b - c )

= a² + ( - b )² + ( - c)² + 2a ( -b ) + 2a(-c) + 2(-b)(-c)

= a² + b² + c² - 2ab - 2 ac + 2bc

c.) ( a + b - c )²

= a² + b² + ( -c)² + 2ab + 2a ( - c) + 2 b( -c)

= a² + b² + c² + 2ab - 2ac - 2bc

d.) (a - b + c ) ²

= a² + ( -b)² + c² + 2a(-b) + 2ac + 2c( -b)

= a² + b² + c² - 2ab + 2ac - 2bc

3 0

2 years ago