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jeyben [28]
2 years ago
6

What is - 4x +7 > x -13

Mathematics
2 answers:
mina [271]2 years ago
6 0

<u>Answer:</u>

x < \bf 4

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

-4x + 7 > x -13

We have to make x the subject of the equation:

• Subtract x from both sides:

-4x - x + 7 > -13

⇒ -5x + 7 > -13

• Now subtract 7 from both sides:

-5x > -13 - 7

⇒ -5x > -20

• Next divide both sides by -5, and remember that dividing an inequality by a negative number reverses the inequality symbol:

x < \frac{-20}{-5}

⇒ x < \frac{20}{5}

⇒ x < \bf 4

andrey2020 [161]2 years ago
5 0

Answer:

\huge\boxed{\sf x < 4}

Step-by-step explanation:

<h3>Given inequality:</h3>

-4x + 7 > x - 13

Subtract x to both sides

-4x - x + 7 > -13

-5x + 7 > -13

Subtract 7 to both sides

-5x > -13 - 7

-5x > -20

Divide -5 to both sides

x < -20/-5

<h3>x < 4</h3>

\rule[225]{225}{2}

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Eva8 [605]

Answer:

Infinite solutions

Step-by-step explanation:

Given is a system of equations.

-3x+y=10

-6x+2y=20

Equation I when multiplied by 2, gives as

-6x+2y =20 which is the same as equation 2 given.

This gives the two lines are not intersecting nor parallel.  But the two lines are coincident with each other.

Hence each point on the line is solution.

Infinite solutions.

Let us try to solve and verify this

BY substitutition we have y = 3x+10, substitute in II

-6x+2(3x+10) =20

Or -6x+6x+20=20

20=20 Thus for any x, this becomes true.

Hence infinite solutions.

8 0
4 years ago
Read 2 more answers
Factorisation :<br>x⁴+y⁴
Anuta_ua [19.1K]
The answer to your question is 

since there are no common factors, the only common factor for x4 + y4 is 1

hope this helps
7 0
3 years ago
Read 2 more answers
A solid machine part is to be manufactured as shown in the figure. The part is made by cutting a small cone off the top of a lar
Alexxx [7]

Answer:

The answer is 390 × pi.

Step-by-step explanation:

Big cone:

V = 1/3 x pi x r^2 x h

= 1/3 x 3.14 x 9^2 x 15

= 1272.3 cubic inches

Small cone:

V = 1/3 x pi x r^2 x h

= 1/3 x 3.14 x 3^2 x 5

= 47.1 cubic inches  

1272.3 - 47.1 = 1225.2 cubic inches

1272/3.14 ≈ 390

The answer is 390 × pi.

4 0
3 years ago
Classify the following triangle. Check all that apply
kramer
D and E. If I remember right that should be the answer.
7 0
4 years ago
Read 2 more answers
N(n+1)+2n+1<br> expand and simplicity
meriva

Answer:

n² + 3n +1

Step-by-step explanation:

n(n+1) + 2n + 1

<h3>i) distribute n into the parantheses</h3>

= (n×n) + (n×1) + 2n + 1

= n² + n + 2n + 1

<h3>ii) collect like terms</h3>

= n² + 3n +1

6 0
3 years ago
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