MATHEMATICS HIGH SCHOOL

What is the value of x, when -25(x - 4) = -55(x - 10)?A) x = 5
B) x = -5
C) x = 8 1/8
D) x = 15

Answers

Answer 1
Answer: -25(x-4)=-55(x-10)
-25x+100 = 55x-550 |+25x
100 = 80x-550          |+550
650 = 80x                 | /80
65/8 = x
x = 8 1/8
C
Answer 2
Answer:

Answer:


Step-by-step explanation:

The answer is d i took the test

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What temperature in Fahrenheit is 50 degree celsius? (Enter numeric value only. If rounding is necessary, round to the nearest whole number.)

Answers

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A taxi cab company charges a flat amount of $5.00 plus a rate of $3.00 per mile traveled, what is the total number of miles traveled if the fare was $41.00

Answers

Answer:

Step-by-step explanation:

Amount charged = $5.00

Amount charged for per mile = $3.00

Miles traveled =

Total amount charged = $41.00

Total amount = $3 per mile - $5

41-5 = 35

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Expand and simplify: 1.(n-2)(3n+7)+2n(2n+3)

factor each expression fully:
2. 4xsquared-25

Answers

1.\n(n-2)(3n+7)+2n(2n+3)\n\n=n\cdot3n+n\cdot7-2\cdot3n-2\cdot7+2n\cdot2n+2n\cdot3\n\n=3n^2+7n-6n-14+4n^2+6n\n\n=7n^2+7n-14

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2.\n4x^2-25=(2x)^2-5^2=(2x-5)(2x+5)
1.(n-2)(3n+7)+2n(2n+3)
We'll start with (n-2)(3n+7)
Use the FOIL method to simplify: First, Outside, Inside, Last. 
Multiply the first numbers of each bracket (n and 3n), the outside numbers (n and 7), the inside numbers (-2 and 3n) and the last numbers (-2 and 7)
F=  3n×n= 3n²
O= n×7= 7n
I= -2×3n= -6n
L= -2×7= -14
Add them together, you get 3n² + n -14.
The second part is 2n(2n+3)
Multiply both numbers inside the bracket by 2n
2n×2n= 4n²
3×2n= 6n
Add these terms with the previous ones
7n² + 7n -14
Because they all have a common factor of 7, we can represent the equation as 
7(n² + n -2)

2. 4x²-25
To factor this, we convert it into two expressions that we multiply together (like converting -9 into 3×-3)
2x × 2x= 4x²
5 × -5= -25
The answer is (2x+5)(2x-5)

Find the value of x, if x√20=7√5-√45

Answers

Answer:

x = 2

Step-by-step explanation:

x SR20 = 7 SR5 - SR45

x = (7 SR5 - SR45) / SR20

x = 2

The sum of 6 consecutive integers is 387. what is the sixth number in this sequence?

Answers

6 consecutive integers : x, x + 1, x + 2, x + 3, x + 4, x + 5

the sum is 387...
x + x + 1 + x + 2 + x + 3 + x + 4 + x + 5 = 387...combine like terms
6x + 15 = 387
6x = 387 - 15
6x = 372
x = 372/6
x = 62

the 6th number, which is x + 5 is : 62 + 5 = 67 <==

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Answers

See, I think the new weight would be:
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