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3 years ago

What’s the Answer to this I got 24 somehow

Mathematics

1 answer:

Bess [88]3 years ago

6 0

Answer:

Step-by-step explanation:

So we have the expression:

$\frac{2x+y}{xy-2x}$

And we want to evaluate it for x=-4 and y=8.

So, substitute:

$\frac{2(-4)+(8)}{(-4)(8)-2(-4)}$

Multiply:

$=\frac{-8+8}{-32+8}$

Add:

$=\frac{0}{-24}$

Evaluate:

$=0$

So, our answer is 0.

And we're done!

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Given f (x) = 2 x + 9<br> f (x) = 15<br> x=

Elina [12.6K]

Answer:

Step-by-step explanation:

15 minus 9 equals 6. 6 divided by 2 equals 3.

6 0

2 years ago

Need help asap or Im going to fail this class

nydimaria [60]

Answer:

The first four.

Step-by-step explanation:

There are 3 main postulates. SSS, SAS, and AAS. This simply refers to how we prove a triangle congruent. With SSS, all 3 sides must be congruent (either proven or given). AAS is when you have 2 angles congruent with a side next to one of the angles. NOT IN BETWEEN (there's an image as to what I'm talking about below). Finally, SAS. This is when you have a set of angles congruent with sides on each side congruent as well (look at the first four as an example of this.

Any more specific questions, feel free to ask!

7 0

2 years ago

Simplify this please.

Natali5045456 [20]

Answer:

tbh i just used another app to help me help you i hope this is right the app i used is always spot on with answers :)

4 0

2 years ago

Read 2 more answers

If i randomly pick a polynomial, is it more likely to have real roots or complex roots?

Vinil7 [7]

I would say you are more likely to have complex roots. If you think of graphs of polynomials, if you draw a function that doesn't pass through the x-axis, all roots are complex.

6 0

3 years ago

Y Varies directly as X and inversely as Z. Y=100 when X=5 and Z=10 Find Y when X=3 and Z=60

Law Incorporation [45]

Answer:

y = 10

Step-by-step explanation:

based on the question if y varries directly as x

mathematically

y ∝ x

also, y varries inversly as z can be mathematically expressed as

y ∝ 1/z

combining the two expressions

y ∝ x ∝ 1/z

i. e

y = kx/z..... where k is the constant of proportionality

make k the subject of formulae

yz = kx

Divide both sides by x

k =yz/x

when y=100 , x = 5 z =10

k = 100 × 10/5

k = 200

to find y when x = 3 and z = 60

<h3>from the equation connecting x,y,z</h3>

k =yz/x

200 =60y/3

cross multiply

60y = 200 × 3

60y = 600

divide both sides by 60

y = 10

5 0

2 years ago