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3 years ago

Gaveing out points for helpers!!

Mathematics

1 answer:

Alekssandra [29.7K]3 years ago

3 0

Because the two angles add up to equal 90, you would make an equation set to equal 90. On the other end you add the measures of your angles together because they are adding up to equal 90. This would look like 2x+5+35=90 and you solve from here. Add like terms making it 2x+40=90 then you subtract 40 from both sides making it 2x=50 and then divide by 2 on both sides which leaves you with x=25.

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Solve <br> 3c-5=2c+5<br> please naswer fast and I will give you 5 stars

Masja [62]

Answer:

Step-by-step explanation:

3c - 5 =2c +5

3c - 2c =5 +5

c=10

4 0

3 years ago

I neee some help with 9th grade algebra what is -3x+9x

weeeeeb [17]

It is positive 6x. Hope this helps!

3 0

3 years ago

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I just need to know if this is correct and if i need to fix anything

Sidana [21]

Answer:

You are correct. Good job and merry Christmas, have a good day.

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2 years ago

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Solve the quadratic equation by using a numeric approach. x squared + 1.1 x minus 2 = 0 a. x = 1.7 and x = -29.2 c. x = 2.3 and

Korolek [52]

Answer:

None of the options are correct, the correct answers are: x = 0.967 and -2.067

Step-by-step explanation:

$x^2 + 1.1x - 2 = 0$

Comparing this equation with $ax^2 + bx + c = 0$

a = 1, b = 1.1, c = -2

Using the almighty formula for solving quadratic equation:

$x = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a} \\x = \frac{-1.1 \pm \sqrt{1.1^2 - 4(1)(-2)} }{2(1)} \\x = \frac{-1.1 \pm \sqrt{1.1^2 - 4(1)(-2)} }{2(1)} \\x = \frac{-1.1 \pm 3.035 }{2}\\x_1 = \frac{-1.1 + 3.035 }{2} = 0.967\\x_2 = -\frac{-1.1 - 3.035 }{2} = -2.067$

6 0

3 years ago

1. If x³ +3x²-4=0 has x=-2 as a root (zero), find the other two roots.

castortr0y [4]

Answer:

1 and -2 (has a multiplicity of 2)

Step-by-step explanation:

so since x=-2 is a root then (x+2) is a factor of the polynomial. This means you can divide the polynomial by (x+2) by using synthetic or long division. So for this example I'll using synthetic division which is much more simple than long division

-2 | 1 3 0 -4

-2 -2 4

1 1 -2 0

(x+2)(x²+x-2)

Now you can factor the quadratic into

(x+2)(x-1)

x+2 = 0

x = - 2

x-1 =0

x = 1

6 0

2 years ago

Gaveing out points for helpers!!​

Gaveing out points for helpers!!