Solve for x. 4 - (2x + 4) = 5

Mathematics

2 answers:

Gennadij [26K]3 years ago

5 0

X=2.5

i hope that helps! <span>（○＾▽＾○）</span>

kherson [118]3 years ago

4 0

X=4.5
Hope this is help

You might be interested in

Find a factor of 5, 15 and 25

kompoz [17]

a common factor of 5, 15 and 25 is 1 and 5

3 0

3 years ago

the sum of the perimeter of two squares is 40cm while the sum of the area is 58cm². Find length the side of the square.

tia_tia [17]

$a,\ b-the\ length\ of\ sides\\\\(1)\qquad4a+4b=40\qquad\text{divide both sides by 4}\\\\a+b=10\to a=10-b\\\\(2)\qquad a^2+b^2=58\\\\\text{Substitute}\ (1)\ \text{to}\ (2):\\\\(10-b)^2+b^2=58\qquad\text{Use}\ (x-y)^2=x^2-2xy+y^2\\\\10^2-2(10)(b)+b^2+b^2=58\\\\100-20b+2b^2=58\qquad\text{subtract 58 from both sides}\\\\42-20b+2b^2=0\\\\2b^2-20b+42=0\qquad\text{divide both sides by 2}\\\\b^2-10b+21=0\\\\b^2-7b-3b+21=0\\\\b(b-7)-3(b-7)=0\\\\(b-7)(b-3)=0\iff b-7=0\ \vee\ b-3=0\\\\\boxed{b=7\ \vee\ b=3}$

$\text{Put the values of b to }\ (1):\\\\for\ b=7\to a=10-7=3\\\\for\ b=3\to a=10-3=7\\\\Answer:\ \boxed{7cm\ and\ 3cm.}$

8 0

4 years ago

A bus travels 36 miles in 45 minutes. Enter the number of miles the bus travels in 60 minutes at this rate.

Reptile [31]

Set up the proportion line up minutes with minutes and miles with miles so it would be x over 60 36 over 45 and u get 48

6 0

4 years ago

Read 2 more answers

5.2-(-2.1) (-4.5-.9)<br>-

ivann1987 [24]

Answer:

-6.14

Step-by-step explanation:

5.2-(-2.1) (-4.5-.9)

=-6.14

4 0

3 years ago

Read 2 more answers

How would you round off .002353 to two significant figure please?

andreev551 [17]

The answer is 0.024.

Let's round decimal by decimal until we get two significant figures.
When the successor number is smaller than 5 then the predecessor number remains the same.
When the successor number is greater than 5 then the predecessor number rounds to the first greater number.
If the successor number is 5 then the even predecessor number remains the same and the odd predecessor number rounds to the first greater number.
0.002353 ≈ 0.00235
0.00235 ≈ 0.0024

Now, we have two significant figures: 2 and 4

4 0

4 years ago