Find the value of the expression below if x=10. x2−2(x+5)PLZ HELP GIVING BRANLIEST

Mathematics

1 answer:

DiKsa [7]3 years ago

5 0

-10

Step-by-step explanation:

x = 10

x2 - 2(x + 5)

10(2) - 2(10+5)

20 - 2(15)

20 - 30

-10

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An archery target consists of a circular bull's-eye with radius x, surrounded by four rings with width y. What is the area of th

amid [387]

given:
bull's eye radius= x
width of surrounding rings=y

solution:
Radius of the circle=x+4y
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=Ď€(x^2+8xy+16y^2-x^2-9y^2-6xy)
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4 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B1000%7D%20%2B%20%5Csqrt%5B3%5D%7B0.027%7D%20-%20%5Csqrt%5B3%5D%7B125%7D" id="

e-lub [12.9K]

Step 1: calculate the cube roots, convert the decimal into a fraction, and calculate the cube roots again

10 + 3 square root 27/1000 - 5

Step 2: calculate the cube root

10 + 3/10 -5

Step 3: subtract the #’s

5 + 3/10

Step 4: calculate and you get

53/10

Answer: 53/10

3 0

3 years ago

baherus [9]

Answer: see proof below

Step-by-step explanation:

Given: cos 330 = $\frac{\sqrt3}{2}$