3 years ago

Diagram shows triangle ABC.

Mathematics

1 answer:

Natasha2012 [34]3 years ago

4 0

Z=20

A triangle is equal to 180 degrees so 70+90=160
180-160=20

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Expand.<br><br>Your answer should be a polynomial in standard form.<br><br>(x-1)(x+4)=

Montano1993 [528]

Answer:

X^2+3x-4

Step-by-step explanation:

This is the answer

8 0

3 years ago

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Using the quadratic formula to solve 4x2 – 3x + 9 = 2x + 1, what are the values of x?

yaroslaw [1]

Answer:

The value of x is:

$x=\dfrac{5\pm \sqrt{103}i}{8}$

Step-by-step explanation:

we have to use the quadratic formula to solve for x.

The equation is given as:

$4x^2-3x+9=2x+1$

which could also be written as:

$4x^2-3x+9-2x-1=0\\\\4x^2-3x-2x+9-1=0\\\\\\4x^2-5x+8=0$

The quadratic formula for the quadratic equation of the type:

$ax^2+bx+c=0$ is given as:

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

Here we have:

a=4, b=-5 and c=8.

Hence, by the quadratic formula we have:

$x=\dfrac{-(-5)\pm \sqrt{(-5)^2-4\times 8\times 4}}{2\times 4}\\\\x=\dfrac{5\pm \sqrt{25-128}}{8}\\\\\\x=\dfrac{5\pm \sqrt{103}i}{8}$

Hence, the value of x is:

$x=\dfrac{5\pm \sqrt{103}i}{8}$

8 0

3 years ago

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After their hike, Joe and Mike took a taxi back to the trailhead. The taxi cost $26 plus $0.35 per mile. Which type of function

Sauron [17]

Answer:

The answer would be A. 1 1/5

Step-by-step explanation:

48/40 = 1 8/40

1 8/40 Simplify to 1 1/5

Hope this helps!

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3 years ago

Help i'll give you brainlyest

zhannawk [14.2K]

Answer:

Its not A and B and I know that, but can you show the rest so I can see if its C because the rest of the picture isn't there

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2 years ago

Cobert 5 feet to to meters to the nearest hundredths place

Brums [2.3K]

1.5 meters

There is 30 cm in a foot and 5 feet times 30 is 150. There is 100 cm in a meter so 150/100 is 1.5 meters.

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3 years ago