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2 years ago

PLEASE HELP I HAVE 2 MORE THEN IM DONE OR TONIGHT (then i start again tmr ;( )

Mathematics

2 answers:

ipn [44]2 years ago

8 0

The number in the green box should be 9

9,17,32,44,45,45,48,48,53,53,55,69

ryzh [129]2 years ago

7 0

Answer:

1. 9

2. 32

4. 69

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The circle with center O has a circumference of 36 units. What is

Alex777 [14]

I think the answer is D

6 0

2 years ago

If f (x)= x-3 and g (x)= 2x-4, find (f+g)(x)

const2013 [10]

(f∘g)(x) is equivalent to f(g(x)). We solve this problem just as we solve f(x). But since it asks us to find out f(g(x)), in f(x), each time we encounter x, we replace it with g(x).

In the above problem, f(x)=x+3.

Therefore, f(g(x))=g(x)+3.

⇒(f∘g)(x)=2x−7+3

⇒(f∘g)(x)=2x−4

Basically, write the g(x) equation where you see the x in the f(x) equation.

f∘g(x)=(g(x))+3 Replace g(x) with the equation

f∘g(x)=(2x−7)+3

f∘g(x)=2x−7+3 we just took away the parentheses

f∘g(x)=2x−4 Because the −7+3=4

This is it

g∘f(x) would be the other way around

g∘f(x)=2(x+3)−7

now you have to multiply what is inside parentheses by 2 because thats whats directly in front of them.

g∘f(x)=2x+6−7

Next, +6−7=−1

g∘f(x)=2x−1

Its a lts easier than you think!

Hope this helped

5 0

3 years ago

Solve for x. <br> 3x+7 = -x-1

alekssr [168]

Answer: x = -2

Step-by-step explanation: 3x+7 = -x-1; add 1 to both sides: 3x+8=-x; subtract 3x from both sides: 8 = -4x; divide by -4 on both sides: -2 = x

4 0

2 years ago

Substitute the given values into the formula, and solve for the unknown variable.

Alla [95]

Answer:

$h=\frac{1}{6}$

Step-by-step explanation:

Given:

$A=\frac{1}{2h} (B+b)\\$

$A=21, B=2, b=5 ,h= ?$

We have to find the value of 'h'

So, putting the given values in the equation to find the value of 'h'.

$A=\frac{1}{2h} (B+b)$

Implementing the given values in the given equations:

$21=\frac{1}{2h}(2+5)\\\\ 21=\frac{1}{2h} (7)\\\\\frac{1}{2h}=\frac{21}{7}\\\\ \frac{1}{2h}=3 \\\\h=\frac{1}{6}$

So, the value of 'h' is

$h=\frac{1}{6}$

3 0

2 years ago

A manufacturer wishes to make a cereal box in the shape of a golden rectangle, based on the theory that this shape is the most p

soldier1979 [14.2K]

Let w be the width and l the length of the rectangle.
Then: $\frac{l}{w}= \frac{1+\sqrt5}{2} \text{ and }lw=104$
Solving the above system we get:
$l= \frac{1+\sqrt5}{2}w\\= \frac{1+\sqrt5}{2}\frac{104}{l}$
Therefore:
$l^2=\frac{1+\sqrt5}{2}104$ then $l=13$ ,which is the length,
And then the width $w=\frac{104}{13}=8$

3 0

2 years ago