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hammer [34]
3 years ago
11

If 4x-3=7 then what does 4x-7=

Mathematics
2 answers:
Andrews [41]3 years ago
7 0

Answer:

-3

Step-by-step explanation:

4-7= -3

So, x= -3

Leya [2.2K]3 years ago
6 0

Answer:

11 i think

Step-by-step explanation:

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Solve algebraically:
vichka [17]
<h3>Answer:</h3>

a)\ x_1=-9,\ x_2=9\\\\b)\ x_1=1,\ x_2=5

<h3>Step-by-step explanation:</h3>

<u>Given equations:</u>

a)\ 2x^2 - 162 = 0\\\\b) -\dfrac{1}{2}(x-3)^2=-2

A) 2x² - 162 = 0

Step 1: Divide both sides by 2.

<h3>\\\implies \dfrac{2x^2 - 162}{2} = \dfrac{0}{2}\\\\\implies x^2-81=0\\\\\implies x^2=81</h3>

Step 2: Take the square root of both sides (using both the positive and negative roots).

\\\implies \sqrt{x^2}=\sqrt{81}\\\\\implies x=\pm\ 9

Step 3: Separate into two cases.

\implies x_1 = -9,\ x_2 =-9

----------------------------------------------------------------------------------------------------------------

B) -1/2(x - 3)² = -2

Step 1: Multiply both sides by -2.

\\\implies -2\left(-\dfrac{1}{2}(x-3)^2\right)=-2(-2)\\\\\implies (x-3)^2=4

Step 2: Take the square root of both sides (using both the positive and negative roots).

\\\implies\sqrt{(x-3)^2}=\sqrt{4}\\\\\implies x-3=\pm\ 2

Step 3: Separate into two cases and solve each one.1)\ x-3=-2\implies x=-2+3\implies \boxed{x=1}\\\\2)\ x-3=2\implies x=2+3\implies \boxed{x=5}

6 0
2 years ago
Read 2 more answers
What is less 2/10 or 10/6?
Ann [662]
This is obvious, 2/10 is less than one
10/6 is more than 1 so
2/10<1<10/6
therfor 2/10 is less

the legit way to do it is
convert bottom numbers to same number
number is 30

2/10 times 3/3=6/10
10/6 times 5/5=50/30

6/10<50/30
4 0
3 years ago
I need help with my homework pls gotta one hour to turn in ​
Helga [31]

Answer:

12 brown

Step-by-step explanation:

4 0
3 years ago
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Sandra is showing her work in simplifying (3.3 − 4.2) − 2.8 + 5.7. Identify any error in her work or reasoning. Step 1: (3.3 − 4
julsineya [31]
The answer is correct 
but I think in step 2 that should read the Associative property
8 0
3 years ago
Read 2 more answers
A line has a y-intercept of 5 and a slope of 7 what is it's equation in slope intercept form
mario62 [17]

Answer:

y=7x+5

Step-by-step explanation:

6 0
3 years ago
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