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GenaCL600 [577]
3 years ago
10

0.5x + 4 + 0.9x = x + 5

Mathematics
2 answers:
Law Incorporation [45]3 years ago
6 0

Answer:

x=2.5

Step-by-step explanation:

kozerog [31]3 years ago
5 0

Answer:

0.5x + 4 + 0.9x = x + 5

collect like terms together:

0.5x + 0.9x - x = 5 - 4 \\ x(0.5 + 0.9 - 1) = 1 \\ 0.4x = 1 \\ x =  \frac{1}{0.4}  \\  \\ { \boxed{ \boxed{x = 2.5}}}

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Let f (x) = 10/x-4
SashulF [63]

Answer:

1.875

Step-by-step explanation:

The rate of change is the derivative of the function.

f(x) = \frac{10}{x-4}\\\\f'(x)=10\times \frac {d}{dx}\frac{1}{x-4}\\\\f'(x)=\frac{-10}{(x-4)^{2}}\\\\f'(2) = \frac{-10}{(2-4)^{2}} =-2.5\\\\f'(8)= \frac{-10}{(8-4)^{2}} =-0.625\\

So, the rate of change is

f'(8) -  f'(2) = - 0.625 + 2.5 = 1.875

5 0
3 years ago
In a city of 26,000 population 5000 read English news paper, 12000 read Nepali La News paper and 1000 read both of these. What p
exis [7]

Answer:

38.46%

Step-by-step explanation:

We are given;

Total population; n(S) = 26000

Number that read English news paper; n(E) = 5000

Number of people that read nepali; n(N) = 12000

Number that read both English and nepali; n(E n N) = 1000

Thus from probability laws, number that read either English or nepali is;

n(E u N) = n(N) + n(E) - n(N n E)

n(E u N) = 12000 + 5000 - 1000 = 16000

Thus;

number that read neither English nor nepali is;

n(E' u N') = n(S) - n(E u N)

n(E' u N') = 26000 - 16000 = 10000

Thus, the percentage is;

10000/26000 × 100% = 38.46%

4 0
3 years ago
A person walking across a bridge accidentally drops an orange into the river below from a height of 40 feet. The function h = −1
FromTheMoon [43]
H=0
0=-16t^2+40
-40=-16t^2
-40/-16=2.5=t^2
t= sqrt2.5
t=1.58seconds

a
4 0
4 years ago
Read 2 more answers
PLS HELP
Charra [1.4K]

Answer:  -418, 728, 446, -429, 1159, -696

Step-by-step explanation:

1. n = -199 - 219 = \boxed{-418}.

2. m = 438 - (-290) = 438 + 290 = \boxed{728}.

3. 128 - (-318) = 128 + 318 = \boxed{446}.

4. The sum of 429 and 429 is 429+429 = 858. We need to subtract this from 429, so 429 - 858 = \boxed{-429}.

5. The sum of 510 and 319 is 510+319 = 829. Subtracting -330, we get 829 - (-330) = 829 + 330 = \boxed{1159}.

6. Call the unknown number "\star". Then \star + 298 = -398, so \star = -398 - 298 = \boxed{-696}. (Think about it.)

4 0
3 years ago
The distributive proper combine________ and ______________to make multiplying whole numbers
Romashka-Z-Leto [24]

Answer:

addition and multiplication

8 0
4 years ago
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