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lord [1]
3 years ago
11

Solve the quadratic equation numerically - 4x = -x + 12

Mathematics
1 answer:
salantis [7]3 years ago
8 0
Answer: x = -4

Explanation:
-4x = -x + 12
-3x = 12
x = -4
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Please help me with this
satela [25.4K]
Area of the trapezoid:
\frac{12.8 + 4.2}{2} (4.9) = 41.65 cm^2

Area of the rectangle:
4.2 x 3.1 = 13.02 cm^2

Area of each quarter circle:
\frac{ \pi  (3.1)^{2} }{4} = 7.54 cm^2

We have two quarter circles:
7.54 + 7.54 = 15.08

41.65 + 13.02 + 15.08 = 69.75 cm^2
5 0
3 years ago
Find the missing side.​
sesenic [268]

Answer:

10

Step-by-step explanation:

Area of traingle:1/2

50=1/2.10.x

50=5x

50/5=5x/5

50/5=5x/5  

x=50/5

x=10

3 0
3 years ago
Using sum or difference formulas, find the exact value of sin(165∘)
Nikitich [7]
\bf \textit{Sum and Difference Identities}
\\ \quad \\
sin({{ \alpha}} + {{ \beta}})=sin({{ \alpha}})cos({{ \beta}}) + cos({{ \alpha}})sin({{ \beta}})
\\ \quad \\
sin({{ \alpha}} - {{ \beta}})=sin({{ \alpha}})cos({{ \beta}})- cos({{ \alpha}})sin({{ \beta}})\\\\
-------------------------------\\\\

\bf sin(165^o)\implies sin(120^o+45^o)
\\\\\\
sin(120^o)cos(45^o)~+~cos(120^o)sin(45^o)\implies \cfrac{\sqrt{3}}{2}\cdot \cfrac{\sqrt{2}}{2}~+~\cfrac{-1}{2}\cdot \cfrac{\sqrt{2}}{2}
\\\\\\
\cfrac{\sqrt{6}}{4}~-~\cfrac{\sqrt{2}}{4}\implies \cfrac{\sqrt{6}-\sqrt{2}}{4}
6 0
3 years ago
Can you put this equation > 3 in a number line.​
Marrrta [24]

Answer:

>3 means any number on the number line larger than 3, so the answer is yes

7 0
3 years ago
Solve each system by substitution method. <br> X=2y+11<br> 7x+2y=13
Andreyy89

Step-by-step explanation:

you need to substitute the x in (7x +2y=13) with (x=2y+11) to solve it

7 0
1 year ago
Read 2 more answers
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