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snow_tiger [21]
3 years ago
12

2u^2 + v when u=3 and v=7

Mathematics
1 answer:
Mariana [72]3 years ago
5 0

Answer: 25

Step-by-step explanation:

There are two variables which is u and v and is given that u is 3 and v is 7  so input that into the expression and solve.

2(3)^2 + 7      Solve the exponent first

2(9) + 7      Now multiply then add

18 + 7 = 25

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With the substitution method, explain how you find the value of the second variable once you have determined the value of one of
Luden [163]

Once you have found the value of one of the variables(let's say x), you can substitute the value of the variable(x) into the variable(x) of one of the original equations to find the second variable.



7 0
3 years ago
-0.75-(-2/5)+0.4+(-3/4)
RSB [31]

-0.75-(-2/5)+0.4+(-3/4) =  -0.7 simplified, how I got this answer can be found below in 16 steps.

1 - First thing we want to do is remove the parentheses.

-0.75 - (-2/5) + 0.4 - 3/4

2 - Then we simplify, multiply -1 by -1.

-0.75 + 1 (2/5) + 0.4 - 3/4

3 - Then multiply 2/5 by 1.

-0.75 + 2/5 + 0.4 - 3/4

4 - Then we want to write - 0.75/1 as a fraction with a common denominator, we do this by multiplying by 5/5.

-0.75/1 * 5/5 + 2/5 + 0.4 - 3/4

5 - Then we write each expression with a common denominator of 5, we multiply each one by a factor of one.

-0.75 * 5/1*5 + 2/5 + 0.4 - 3/4

6 - Then we multiply 5 by 1.

-0.75 * 5 / 5 + 2/5 + 0.4 - 3/4

7 - Then we combine the numerators over the common denominator.

-0.75*5+2/5+0.4-3/4

8 - We multiply -0.75 by 5.

-3.75 + 2/5 + 0.4 - 3/4

9 - Then we add -3.75 and 2.

-1.75/5+0.4-3/4

10 - And then we divide -1.75 by 5.

-0.35 + 0.4 - 3/4

11 - Then add -0.35 and 0.4.

0.05 - 3/4

12 - We then write 0.05/1 as a fraction with a common denominator, we do this via multiplying it by 4/4.

0.05/1 * 4/4 - 3/4

13 - Then we write each expression with a common denominator of 4, through multiplying each by a factor of 1.

0.05 * 4/4 - 3/4

14 - We combine the numerators over the common denominator.

0.05 * 4 - 3 / 4

15 - We simplify.

-2.8 / 4

16 - Then we divide -2.8 / 4

The final answer is -0.7

6 0
3 years ago
If I could get help………
charle [14.2K]

Answer:

x1 = 3 \\ y1  = 10 \\ x2 = 5 \\ y2 = 12 \\ y - y1 =  \frac{y2 - y1}{x2 - x1} (x - x1) \\ y - 10 =  \frac{2}{2} (x - 5) \\ y = x - 5 + 10 = x + 5

enjoy it

8 0
3 years ago
Find the value of x.<br> A.70<br> B.54<br> C.40<br> D.74
Nuetrik [128]

Answer:

a is the value of X

Step-by-step explanation:

8 0
3 years ago
Find the reference angle for 497°<br> A) 137°<br> B)133°<br> C) 47°<br> D) 43°
Mila [183]
Reference angle is 137
4 0
3 years ago
Read 2 more answers
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