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umka2103 [35]
3 years ago
13

Can someone please help me I’m stuck

Mathematics
2 answers:
Papessa [141]3 years ago
8 0

Answer:

8

Step-by-step explanation:

These triangles are similar triangles, so we can use ratios to solve

12        x

----- = --------

15          10

Using cross products

12*10 = 15x

120 = 15x

Divide by 15

120/15 =15x/15

8=x

agasfer [191]3 years ago
7 0

Answer: 10

Step-by-step explanation: Because C is the mid-segment of DB, so it is split in half. So X is the same as the other half (10).

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Can u help me?? please
DedPeter [7]

Answer:

you checked the right box. Its b

Step-by-step explanation:

22/5 divided by 2/5 is 11

b

6 0
3 years ago
Daurie rides on her motorcycle for 252 miles on 6 of gas.
anastassius [24]
252 divided by 6 = 42
8 0
4 years ago
Let f(x)= 2x-3/9 and g(x)=9x+3/2<br><br> Find (f o g)(x)<br> Find (f o g)(x)
svlad2 [7]
These seem tough, but they are not that bad. 
(f o g)(x)

That means to take function g when x = x (It just means that you don't need to do anything with the function) and substitute it into function f wherever there is a x value. (So basically g becomes what x equals) 
Here is a visual representation of it.

(f o g)(x) = 2(9x + (3/2)) - (3/9) 

We need to distribute the 2 to everything inside the parenthesis.

(f o g)(x) = 18x + (6/2) - (3/9) 

Let's simplify the fraction on the right and left, then find a common denominator so we can add / subtract the two fractions. 

(f o g)(x) = 18x + (3) - (1/3) 
(f o g)(x) = 18x + (9/3) - (1/3) 

Combine like terms.

(f o g)(x) = 18x + (8/3)

Our final answer is: 
(f o g)(x) = 18x + 8/3

8 0
3 years ago
Three times a number minus another number is -3. The sum of the numbers is 11. Find the numbers
MatroZZZ [7]

The first equation is

3x-y=-3

The second equation is

x+y=11

If you sum the two equations you'll cancel y:

4x=8 \iff x=2

And since the sum must be 11, we have y=9.

8 0
4 years ago
Plz help me :,( also show the work too /:
ZanzabumX [31]

Answer:

<em>Surface Area for cube: 263 inches^3</em>

Step-by-step explanation:

<em>Formula: 2lw + 2lh + 2wh</em>

<em>2(6 1/2)(3) + 2(6 1/2)(7) + 2(3)(7) =</em>

<em>39 + 182 + 42 =</em>

<em>263 inches</em>

<em>Hope This Helps! :-)</em>

6 0
4 years ago
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