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pentagon [3]
3 years ago
10

Find the area of this figure. A= cm2

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
7 0

Answer:

area of rectangle=7×5=35cm²

area of triangle=1/2×4×3=6cm²

Step-by-step explanation:

area of figure=35+6=41 cm²

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What are the zeros of the quadratic function f(x) = 2x2 – 10x – 3?
Natasha2012 [34]

Answer:

x=\frac{50+\sqrt{31}}{2},\frac{50-\sqrt{31}}{2}  are zeroes of given quadratic equation.

Step-by-step explanation:

We have been a quadratic equation:

2x^2-10x-3

We need to find the zeroes of quadratic equation

We have a formula to find zeroes of a quadratic equation:

x=\frac{b^2\pm\sqrt{D}}{2a}\text{where}D=\sqrt{b^2-4ac}

General form of quadratic equation is ax^2+bx+c

On comparing general equation with b given equation we get

a=2,b=-10,c=-3

On substituting the values in formula we get

D=\sqrt{(-10)^2-4(2)(-3)}

\Rightarrow D=\sqrt{100+24}=\sqrt{124}

Now substituting D in  x=\frac{b^2\pm\sqrt{D}}{2a} we get

x=\frac{(-10)^2\pm\sqrt{124}}{2\cdot 2}

x=\frac{100\pm\sqrt{124}}{4}

x=\frac{100\pm2\sqrt{31}}{4}

x=\frac{50\pm\sqrt{31}}{2}

Therefore, x=\frac{50+\sqrt{31}}{2},\frac{50-\sqrt{31}}{2}



5 0
3 years ago
Read 2 more answers
Given the following geometric sequence, find the common ratio: {16, 64, 256, ...}.
Anettt [7]

Answer:

The common ratio is 4

Step-by-step explanation:

We need to divide a term by the previous term to find the common ratio in a geometric sequence:

64 ÷ 16 = 4

256 ÷ 64 = 4

By doing it twice we can confirm that the common ratio is 4

8 0
3 years ago
Read 2 more answers
Write an expression.Then find the 100th term in the sequence. 3,10,17,24,31,38...
Tju [1.3M]
The correct answer would be C
5 0
3 years ago
M is between L and C. LM=11, MC=2x+5, and LC=6x-6. What is MC?
vlabodo [156]
6(2x+5)-6=0
(12x+30)-6=0
             +6 +6
12x+30=6
       -30 -30
12x=-24
/12   /12
x=-2
MC=2(-2)+5
MC=-4+5
MC=1

LM=11
MC=1
LC=-18
3 0
3 years ago
–3x + 1 + 10x = x + 4
lyudmila [28]
Your answer is 0.25, bro
7 0
3 years ago
Read 2 more answers
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