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Soloha48 [4]
3 years ago
15

Hii please help i’ll give brainliest

Mathematics
1 answer:
sweet [91]3 years ago
6 0
-(-3) is the right answer
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E/4 + 2d - 3 when e = 12 and f = 1/2.
Oxana [17]

Given that,

An expression : \dfrac{e}{4}+2f-3

To find,

The value of the above expression when e = 12 and f = 1/2

Solution,

We have,

\dfrac{e}{4}+2f-3

Put e = 12 and f = 1/2

So,

=\dfrac{12}{4}+2\times \dfrac{1}{2}-3\\\\=3+1-3\\\\=1

So, the value of the above expression is 1.

4 0
3 years ago
Why do have to ignore the absolute value sign while solving differential equation?
kherson [118]
It is in need of ignoring the absolute value sign when solving differential equations because they may interfere with the solution or in a way that the values that are being calculated may have a different answer in which is not the right answer to the given equation.
7 0
4 years ago
A team from the high school went on a science-and-math quiz show. The science questions were worth 10 points and the math questi
AlladinOne [14]

Answer: 4 science questions and 5 math questions

<u>Step-by-step explanation:</u>

To guess, you know that no matter how many 10 point questions you answer, the result will end in a zero. The number given is 85 so find a number you can multiply by 9 that ends in a 5. Answer: 9(5) = 45

The remaining points (40) are divisible by 10.

40 ÷ 10 = 4

Check: 5 (9-point questions) + 4 (10-point questions) = 9 total questions

             45 points                   + 40 points                      = 85 points

Note that this problem can be solved mathematically by setting up a system of equations:

Points:  9x + 10y = 85

Quantity:  x +  y =  9

3 0
3 years ago
If LN = 6x – 5, LM = x + 7, and MN = 3x + 20, find MN.
nikklg [1K]

Answer:

LM = LN + MN [ assuming N is a point between L and M ]

(x + 7) = (6x - 5) + (3x + 20) \\ x + 7 = 9x + 15 \\ 8x =  - 8 \\ { \underline{x =  - 1}}

then find MN:

MN = 3x + 20 \\ MN = 3( - 1) + 20  =  - 3 + 20\\ { \boxed{ \boxed{MN = 17}}}

4 0
3 years ago
Question 7 ❤️ this is almost due and I need some help with question 7! Thanks
nignag [31]
5.   a.) 8.73/450x100=1.94
b.) 8.73/450≈0.02
c.) 450/8.73x25≈1289
7   a.) 622/12≈52km per hour
b.) 622/0.5=1244 km per hour    ( that's .......impossible...)
Those are your answers.
3 0
4 years ago
Read 2 more answers
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