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hram777 [196]
3 years ago
13

9 - 0.5x = 15 solve for x and show your work.

Mathematics
2 answers:
elena-14-01-66 [18.8K]3 years ago
5 0

Answer:

x = - 12

Step-by-step explanation:

9 - 0.5x = 15

* isolate the variable using inverse operations *

step 1 subtract 9 from each side

9 - 9 cancels out

15 - 9 = 6

now we have -0.5x = 6

step 2 divide each side by -0.5

-0.5x / -0.5 = x

6 / -0.5 = - 12

we're left with x = - 12

Bas_tet [7]3 years ago
3 0

Answer:

Step-by-step explanation:

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a_sh-v [17]

Answer:

The equation is,

(x+1)^{2} \times (x+2) = 0

Step-by-step explanation:

According to the question, the equation is cubic and have roots -1 (with multiplicity of 2) and -2.

So, the equation is,

(x+1)^{2} \times (x+2) = 0

[Since, when a , b , c are the roots of a cubic equation, the equation is

given by (x-a) \times (x-b) \times (x-c) = 0 ]

3 0
3 years ago
A triangle has a base length of 14cm greater than its height . If the area of the triangle is 48cm^2, find the height of the tri
irga5000 [103]
Area of triangle = base x height /2
48 = (a+14)a/2
a^2 +14a = 96
a^2 + 14a - 96 = 0
Solving for a = 5.04
5 0
4 years ago
Subtract (3x^3+4x^2)-(2x^3+3x^2-x)
insens350 [35]

Answer:

X^3 + x^2 + x

Step-by-step explanation:

First, distribute the negative sign to the numbers in the second parentheses. Then you’ll need to combine like terms.

4 0
3 years ago
Help will mark brainleist serious answers only
USPshnik [31]

Answer:

x is +1

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Step-by-step explanation:

8 0
3 years ago
Which number is rational?
irina [24]
D
hope this helps
this is because the .3 is repeating but it is the same number repeating(it is a pattern)
3 0
4 years ago
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