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BARSIC [14]
3 years ago
12

X+3 ——=8 what’s the value for 2. X

Mathematics
1 answer:
irina1246 [14]3 years ago
7 0
I think x equals 13 because 13+3=16 and 16 divided by 2 equals 8
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What is the correct answer?
mart [117]
There are 8 marks on the line and the first line is 3 long while the second is 2 long
c. 3/8+2/8=5/8
6 0
3 years ago
What is :<br><br>(49^x)(7^x^2)=2401^2
ludmilkaskok [199]
(49^x)(7 ^{x^2})=2401^2 \\ \\( (7^2)^x)(7 ^{x^2})= (7^4) ^2 \\ \\ 7 ^{2x}\cdot 7^{x^2}=7^{8} \\ \\ 7 ^{2x+x^2} =7^{8} \\ \\2x+x^2 =8

 x^2-2x-8 = 0\\ \\ a=1, \ b=-2, \ c=-8 \\ \\\Delta =b^2-4ac = (-2)^2 -4\cdot1\cdot (-8) = 4 +32 =36 \\ \\x_{1}=\frac{-b-\sqrt{\Delta} }{2a}=\frac{2-\sqrt{36}}{2 }=\frac{ 2-6}{2}=\frac{-4}{2}=-2 \\ \\x_{2}=\frac{-b+\sqrt{\Delta} }{2a}=\frac{2+\sqrt{36}}{2 }=\frac{ 2+6}{2}=\frac{8}{2}= 4 \\ \\Answer: \ x=-2 \ \ or \ \ x=4

7 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLEST FOR CORRECT ANSWERS. PLZ HELP ME
taurus [48]

Answer:

D slope in relationship is 3

slope=2

equation y=2x

B y=2.5x

y-intercept is (0,2)

Step-by-step explanation:

5 0
4 years ago
The area of a rectangle is 33 ft^2, and the length of the rectangle is 5 ft less than double the width. Find the dimensions of t
dimaraw [331]

Answer:

Length = 6

Width = 5.5

Step-by-step explanation:

Let's use the variable x to represent the width:

x = width

The question says that the length of the rectangle is "5 ft less than double the width". This length can be represented like this:

2x - 5 = length

To find the area of a rectangle, you multiply the width and length, so we are going to write an equation where we multiply the width and length and set it equal to 33 ft^2, which is the area:

(x)(2x - 5) = 33

Now use basic algebra to solve for x:

2x^2 - 5x = 33

2x^2 - 5x - 33 = 0

2x^2 + 6x - 11x - 33 = 0

(2x^2 + 6x) + (-11x - 33) = 0

2x(x + 3) - 11(x + 3) = 0

(2x - 11) (x + 3) = 0

x = 11/2, -3

x either equals 11/2 or -3. However, remember that x represents the width, and you can't have a negative number for a width, so x = 11/2 or 5.5.

Now plug in 5.5 to the length expression and simplify:

2(5.5) - 5

11 - 5 = 6

The length is 6 and the width is 5.5.

Hope this helps (●'◡'●)

7 0
3 years ago
Which of the following is the graph of f(x)=2
Olenka [21]
The answer is b, B cause why not
3 0
4 years ago
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