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earnstyle [38]
3 years ago
13

What is the value of x

Mathematics
1 answer:
topjm [15]3 years ago
3 0

Answer:

x = 98

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

x° is an exterior angle of the triangle, thus

x = 53 + 45 = 98

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Gre4nikov [31]
The answer is y= -x + 6
8 0
3 years ago
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Which of the following is equivalent to 0 equals 3 x squared minus 12 x minus 15 when completing the square?
skad [1K]
Answer:

x = 5, -1

Step-by-step explanation:

0 = 3x^2 - 12x - 15 or

3x^2 - 12x - 15 = 0

By solving for x, use the Quadratic Formula.

… x = 5 and/or -1
8 0
2 years ago
Which of the following is a perfect square trinomial?
Bezzdna [24]

Answer:

D.~4x^2-20xy+25y^2

Step-by-step explanation:

4x^2-20xy+25y^2\\\\=(2x)^2-2\cdot 2x \cdot 5y+(5y)^2\\\\=(2x-5y)^2

3 0
2 years ago
For the function f(x)=3xsquared- 2x+5 find f(1) f(-2) and f(a)
Oksanka [162]
f(x)=3x^2-2x+5\\\\
f(1):\ \ Substitude\ 1 \ as\ x\ into\ function:\\
f(1)=3*1^2-2*1+5=3-2+5=\textbf{6}\\\\
f(-2)\ \ Substitude\ x=-2\\
f(-2)=3*(-2)^2-2*(-2)+5=3*4+4+5=12+4+5=\textbf{21}\\\\
f(a)\ \ substitude\ x=a\\
f(a)=\underline{3a^2-2a+5}
4 0
3 years ago
Mary has $135 to spend on clothes. She wants to purchase winter boots for $70 and some sweaters that cost $20 each. Write an ine
creativ13 [48]

Answer:

1 pair of boots and 6 sweaters

Step-by-step explanation:

70+20s = 135

-70             -70

20s = 135

divide 20 both sides

s = 6.75

She can buy 6 sweaters because she cannot buy half a sweater.

s - sweaters

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2 years ago
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