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2 years ago

I need major help on these set theory questions!!!

Mathematics

1 answer:

Savatey [412]2 years ago

4 0

Answer:

4. option D

5. option C

6. option A

7. option A

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PLS HELP WILL GIVE BRAINLY!!

cricket20 [7]

Answer:

Step-by-step explanation:

1 milli liter = 0.135 grams

182.8 ml = 0.135 * 182.8 = 24.678 grams

7 0

3 years ago

Consider the function.

Licemer1 [7]

Answer:

Option 4

Step-by-step explanation:

Given function is,

$f(x)=2\frac{1}{2}-3\frac{1}{3}x$

Steps to get the inverse of the given function,

Step 1,

Convert the function into equation,

$y=2\frac{1}{2}-3\frac{1}{3}x$

Step 2,

Interchange the variables 'x' and 'y',

$x=2\frac{1}{2}-3\frac{1}{3}y$

Step 3,

Solve the equation for the value of y,

$x-2\frac{1}{2}=-3\frac{1}{3}y$

$x-\frac{5}{2}=-\frac{10}{3}y$

$-x+\frac{5}{2}=\frac{10}{3}y$

$-3x+\frac{15}{2}=10y$

$-\frac{3}{10}x+\frac{15}{20}=y$

$y=-\frac{3}{10}x+\frac{3}{4}$

Step 4,

Convert the equation into inverse function,

$f^{-1}x=-\frac{3}{10}x+\frac{3}{4}$

For x-intercepts,

Substitute y = 0,

$0=-\frac{3}{10}x+\frac{3}{4}$

$\frac{3}{10}x=\frac{3}{4}$

$x=\frac{10}{4}$

$x=\frac{5}{2}$

$x=2\frac{1}{2}$

Therefore, x-intercept of the inverse function is $(2\frac{1}{2},0)$ .

Option 4 will be the answer.

8 0

2 years ago

Write<br> (b^4)^2 without exponents

Anna35 [415]

Answer:

b^8

Step-by-step explanation:

(a^m)^n=a^(m*n)

(b^4)^2=b^(4*2)=b^8

4 0

2 years ago

A customer buys five cans of baked beans, four packets of brown sugar and two packets of biscuits from a supermarket.He gives th

r-ruslan [8.4K]

Given:
Let baked beans be x
Let brown sugar be y
Let biscuits be z

5x + 4y + 2z = 150 - 26
5x + 4y + 2z = 124

a can of baked beens costs half as much as a packet of biscuits:
x = 1/2 * z = z/2

a packet of sugar is 3.00 cheaper than a packet of biscuits
y = z - 3

We substitute x and y with its values:

5x + 4y + 2z = 124 ; x = z/2 ; y = z-3
5(z/2) + 4(z-3) + 2z = 124
5z/2 + 4z - 12 + 2z = 124
5z/2 + 6z = 124 + 12
2(5z/2 + 6z) = 2(136)
5z + 12z = 272
17z = 272
z = 272/17
z = 16 price of a packet of biscuits.

can of baked beans : x = z/2 ; x = 16/2 = 8
packet of sugar : y = z - 3 ; y = 16 - 3 = 13

5x + 4y + 2z = 124
5(8) + 4(13) + 2(16) = 124
40 + 52 + 32 = 124
124 = 124

3 0

2 years ago

What is the value of y? How do u solve and fine the answer , anyone knows ?? I’ll give you best brainliest if you know this

Serga [27]

let's recall that the sum of all exterior angles in a polygon is 360°. Check the picture below.

3 0

3 years ago