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abruzzese [7]
3 years ago
9

3x+4y=10 solve for y

Mathematics
1 answer:
Sever21 [200]3 years ago
7 0

Answer:

y=5/2 - 3x/4

Step-by-step explanation:

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Please help asap!!! !!!
erica [24]
(36 3/4" + 36 3/8" + 371/2" +z) /4 = 36 5/8" 
This is the equation that you would get for the average. Now we just solve for z. 
Following PEMDAS you have to mulitply the equation by 4 to get rid of the divide by 4 part. 
4( (36 3/4" + 36 3/8" + 371/2" +z) /4 = 36 5/8)
Which does this
 36 3/4" + 36 3/8" + 371/2" +z = 146 1/2" 
Now you have to add and subtract to get "z" by itself. 
36 3/4" + 36 3/8" + 371/2" = 110 5/8" 
(110 5/8" + z = 146 1/2" ) -110 5/8"
z= 35 7/8", so the answer is b
6 0
3 years ago
Brandy took 3 friends out for dinner. The cost of the meal was 46.15 she left the 20% tip what was the total cost including the
slega [8]

Answer: $55.35


Step-by-step explanation:

if the bill is $46.15, round it up to $46. Twenty percent of that is $9.20, found by moving the decimal point one place left. Add $9.20 to $46.15, and you get $55.35

i hope this is correct and it helps :)

8 0
3 years ago
Help pls pls pls !!!!
kramer

Answer:

AAS

Step-by-step explanation:

I believe

6 0
2 years ago
Simplify the expression by using a double-angle formula or a half-angle formula. (a) 2 tan(5°) 1 − tan2(5°)
antoniya [11.8K]

The question is related to trigonometry and we have to use the formula of double angle .

Here we use double angle formula of tangent function which is

tan(2x) = \frac{2tan(x)}{1-tan^2(x)}

Given expression is

\frac{2tan (5 \degree)}{1-tan^2(5 \degree)}

Comparing it with double angle formula, we will get x = 5

SO the required expression is equal to

\frac{2tan (5 \degree)}{1-tan^2(5 \degree)}  =tan(2*5 )

\frac{2tan (5 \degree)}{1-tan^2(5 \degree)}  =tan(10 )

So the answer is tan(10) .

6 0
3 years ago
Show the working for <br><br> 3y^2 x 2y^5 x 5y^4 over 6y^3 x 4y^4
solong [7]

Answer:

please I can't do it I have not been thought

6 0
2 years ago
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