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3 years ago

Can anyone help me with this question I don't understand it

Mathematics

2 answers:

Alex787 [66]3 years ago

7 0

Add together -9x and -11x to get the value of X. Add together 4y and 7y to get the value of Y.

Anon25 [30]3 years ago

6 0

X=3
y= 20.5 ................................

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Three lines intersect to form angles. If <2 is equivalent to (2x-8)°, what is the value of x?

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Step-by-step explanation:

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3 years ago

You spin the spinner shown below once the spinner has 4 equal sectors colored pink,purple,blue,and green what is p(green)

Alona [7]

Answer:

Step-by-step explanation:

If it is a fair spinner (equally likely to fall on any sector) then p(green) = 1/4.

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3 years ago

Please help with question 2, I’m too tired to think right now, and it’s for my little sister and it’s due tomorrow! Ignore the n

marishachu [46]

Answer:

2000 L

Step-by-step explanation:

There are 1250 L of water in a tank at present. If the tank is 0.625 full, what is the capacity of the tank?

The simple solution is:

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Let c equal the capacity of the tank.

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And simplify:

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3 years ago

What is Twelve times a number decreased by 4

Vinvika [58]

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Step-by-step explanation:

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3 years ago

Read 2 more answers

What are all of the real roots of the following polynomial? f(x) = x^4 -24x^2 - 25 A. -1 or 1 B. -5 or 5 C. -5, -1, 1, or 5 D. -

professor190 [17]

For this case we have the following function:

$f (x) = x ^ 4-24x ^ 2-25$

We make a change of variable:

$u = x ^ 2$

So, we have:

$u ^ 2-24u-25$

We apply the resolver:

$a = 1\\b = -24\\c = -25\\$

$u = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2 (a)}\\u = \frac {- (- 24) \pm \sqrt {(- 24) ^ 2-4 (1) (- 25)}} {2 (1)}\\u = \frac {24 \pm \sqrt {576 + 100}} {2}\\u = \frac {24 \pm \sqrt {676}} {2}\\u = \frac {24\pm26} {2}$

We have two roots:

$u_ {1} = \frac {24 + 26} {2} = 25\\u_ {2} = \frac {24-26} {2} = - 1$

Returning the change:

$x ^ 2 = 25\\x = \pm \sqrt {25} = \pm5$

$x ^ 2 = -1$ Give the imaginary roots.

Answer:

Real roots $\pm5$

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3 years ago