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3 years ago

PLEASE ASAP GIVING BRAINLIEST

Mathematics

2 answers:

Elodia [21]3 years ago

8 0

Answer:

29.7cm²

Step-by-step explanation:

The area of the shaded region = area of rectangle - area of circle

Area of rectangle:

A=lw

=7*5

=35cm²

Diameter of circle is 2.6cm. Radius is half diameter: 2.6/2=1.3cm

Area of circle:

A=πr²

=(3.14)(1.3²)

=5.3066cm²

35 - 5.3066 = 29.6934cm²

Bumek [7]3 years ago

6 0

Give them brainliest!!!

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Read 2 more answers

What is the solution set of the equation using the quadratic formula?

oee [108]

(1)

we are given

$x^2+6x+10=0$

we can use quadratic formula

$\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}$

$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

now, we can compare and find a , b and c

we get

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now, we can plug these values into quadratic formula

$x=\frac{-6\pm \sqrt{6^2-4(1)(10)}}{2(1)}$

$x=\frac{-6+\sqrt{6^2-4\cdot \:1\cdot \:10}}{2\cdot \:1}$

we can simplify it

$x=-3+i$

$x=\frac{-6-\sqrt{6^2-4\cdot \:1\cdot \:10}}{2\cdot \:1}$

$x=-3-i$

so, we will get solution

{−3+i, −3−i}.........Answer

(2)

we are given equation as

$x^2-8x+14=0$

Since, Jamal solve this equation by completing square

so, firstly we will move constant term on right side

so, subtract both sides by 14

$x^2-8x+14-14=0-14$

$x^2-8x=-14$

we can write

$-8x=-2\times 4\times x$

so, we will add both sides by 4^2

$x^2-8x+4^2=-14+4^2$

we get

$x^2-8x+16=-14+16$ ..............Answer

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3 years ago