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Mathematics

1 answer:

Neko [114]3 years ago

7 0

The figure has 5 sides, so it must be a pentagon. Pentagon’s interior angles sum up to 540°.

Therefore:

132+90+3x=540

222+3x=540

3x=318

x=106

Checking work, where x=106

222+3(106)=540.

So x°=106°

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Evaluate the expression

Setler [38]

-53

Step-by-step explanation:

$\frac{( { - 8)}^{2} }{5 - 9} - ( - 1)^2 + 4( - 9) \\ = \frac{64}{ - 4} - 1 - 36 \\ = - 16 - 1 - 36 \\ = - 52 - 1 \\ = - 53$

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Martin charges $15 for every 5 bags of leaves he rakes. Last weekend, he raked 27 bags of leaves. How much money did he earn?

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Find the side length of a rectangle?

defon

You could multiply the length that they have given you by 2 and subtract that from the perimeter. That gives you the total length of the missing side and divide it by 2 to get one side.

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3 years ago

Which numerical expression would provide the solutions to the equation 7x^2 + 4x - 8 = 14

Lelu [443]

We have that
7x^2 + 4x - 8 = 14-----------------> 7x²+4x-22=0
Step 1
Solving a second degree equation
x1=[-b+√(b²-4ac)]/2a
x2=[-b-√(b²-4ac)]/2a
a=7
b=4
c=-22
then
x1=[-4+√(4²-4*7*(-22))]/(2*7)-----------> [-4+√(632)]/(14)
x1=-(-4+25.14)/14=1.51

x2=[-4-√(4²-4*7*(-22))]/(2*7)-----------> [-4-√(632)]/(14)
x2=-(-4-25.14)/14=-2.08

the solutions of the system is
x1=1.51
x2=-2.08
to check the result

using a graph tool
see the attached figure

the answer is
the numerical expressions is
x1=[-b+√(b²-4ac)]/2a
x2=[-b-√(b²-4ac)]/2a

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3 years ago

Please help step by step

TEA [102]

Answer:

i have made it in above picture

6 0

3 years ago

Answer quickly only if you know ​

Answer quickly only if you know