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Lyrx [107]
3 years ago
5

Plz help with math and show your work

Mathematics
1 answer:
Inga [223]3 years ago
4 0
26.   2x^2 +4x -10 = 0       (-4 + - (root(4^2 - 4*2*-10)))/2*2   =  
(-4 + - (root(96)))/4
(-4 + (root(96)))/4  ≈  1.45
(-4 -  (root(96)))/4  ≈  -3.45

27. f(x) = 0 when any of the components that multiply together equal 0 for this function therefore   x -2 = 0    x +3 = 0    x -5 = 0   so   f(x) = 0 when x = 2, -3 or 5 


28. It looks like it shows you how to do it
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lina2011 [118]

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3 years ago
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I’ll give you 15 points if you know the answers to this question
lys-0071 [83]

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4 0
3 years ago
Question 18<br> Decrease £4600 by 20%
NISA [10]

Answer:

3680

Step-by-step explanation:

So, we would subtract. But, first we have to find the percent. But, we all use calculators so, it is 920. Saves us a lot of time.

4600 - 920 = 3680

Therefore your answer is 3680

Hope this helps!

4 0
3 years ago
in CAT the measure of the largest angle is 10 less than 5 time the smallest angle. The measure of the middle angle is 6 more tha
Vsevolod [243]

Answer:

The measure of middles angle is 113.5° .

Step-by-step explanation:

Given as :

The measure of the largest angle is 10 less than 5 time the smallest angle.

The measure of the middle angle is 6 more than twice the measure of the largest angle

Let The largest angle = L

Let The middle angle = M

Let The smallest angle = S

As per statement

Largest angle = 5 times smallest angle - 10

i.e L = 5 × S - 10                .....1

Again

Middle angle = twice largest angle + 6

i.e M = 2 × L + 6                ......2

Since for any Triangle sum of three angles = 180°

i.e ∠L + ∠M + ∠S = 180°

Or, ( 5 × S - 10 ) + ( 2 × L + 6 ) + S = 180°

Or,  ( 5 × S - 10 ) + [ 2 × (5 × S - 10 ) + 6 ] + S = 180°      

Or, 5 S - 10 + (10 S - 20 + 6) + S = 180°      

Or, 5 S - 10 + 10 S - 20 + 6 + S = 180°    

Or, (5 + 10 + 1) S - 24 =  180°    

Or, 16 S =  180° + 24

Or, 16 S = 204

∴  S = \dfrac{204}{16}

i.e S = 12.75

So, The measure of smallest angle = S = 12.75°

And

L = 5 × 12.75 - 10  

i.e L = 53.75

So, The measure of Largest angle = L = 53.75°

And

M = 2 × L + 6                

Or, M = 2 × 53.75 + 6

i.e M = 107.5 + 6 = 113.5

So, The measure of middles angle = M = 113.5°

Hence,  The measure of middles angle is 113.5° . Answer

3 0
3 years ago
Use whichever method you choose to solve the system of equations: x + y = 6 and 3x + 5y = 26
Natali [406]
X+y=6 , 3x+5y=26 here is your answer:)

5 0
3 years ago
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