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Leni [432]
2 years ago
13

Need help please math............

Mathematics
1 answer:
Vsevolod [243]2 years ago
8 0

Answer:

9\frac{52}{69}  - 1 \frac{29}{50}

\frac{673}{69}  -   \frac{79}{50}

\frac{673}{69} to  \: the \: nearest \: whole \: number \: is \: 10

\frac{79}{50} to \: the \: nearest \: whole \: number \: is \: 2

> >  > 10 - 2 = 8

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Step-by-step explanation:

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A literal equation has only one variable.<br> True<br> False
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Solve the following system of equations <br> 2x + y = 3<br> X = 2y - 1
pishuonlain [190]

Answer:

x = 1 , y = 1

Step-by-step explanation:

Solve the following system:

{2 x + y = 3 | (equation 1)

x = 2 y - 1 | (equation 2)

Express the system in standard form:

{2 x + y = 3 | (equation 1)

x - 2 y = -1 | (equation 2)

Subtract 1/2 × (equation 1) from equation 2:

{2 x + y = 3 | (equation 1)

0 x - (5 y)/2 = (-5)/2 | (equation 2)

Multiply equation 2 by -2/5:

{2 x + y = 3 | (equation 1)

0 x+y = 1 | (equation 2)

Subtract equation 2 from equation 1:

{2 x+0 y = 2 | (equation 1)

0 x+y = 1 | (equation 2)

Divide equation 1 by 2:

{x+0 y = 1 | (equation 1)

0 x+y = 1 | (equation 2)

Collect results:

Answer:  {x = 1 , y = 1

7 0
4 years ago
If y=sin(x-sinx), what is the smallest positive value of x for which the tangent line is parallel to the x-axis
KiRa [710]

Answer:

Option b ) 2.310

Step-by-step explanation:

Given that the function is

y = sin (x-sinx)

For finding when the tangent is parallel to x axis, we must find the least positive value of x for which y' i.e. derivative =0

Differentiate y with respect to x using chain rule.

y' = cos(x-sinx) * (1-cosx)

Equate this to 0

Either one factor should be zero.

cos(x-sinx)=0\\x-sinx =\frac{\pi}{2} \\

x=2.31 satisfies this

For the other root,

1-cos x =0\\cos x =1\\x =0\\

Since positive least value is asked we can say

x =2.310

Option b

3 0
4 years ago
This recipe makes 3 portions of porridge. Complete the amount of each ingredient that is needed to make just 2 portions. Recipe:
Blizzard [7]

Answer:

160 g of oats

0.4 l or 400 ml of milk

20 g sugar

Step-by-step explanation:

If the recipe originally serves 3 portions and we require the amount of each ingredient that is needed to make 2 portions, simply multiply each amount in the original recipe by 2/3.

Oats:

O = \frac{2}{3}*240\ g\\ O=160\ g

Milk:

M = \frac{2}{3}*1.2\ l\\M=0.4\ l=400\ ml

Sugar:

S = \frac{2}{3}*60\ g\\S=40\ g

160 g of oats

0.4 l or 400 ml of milk

20 g sugar

3 0
3 years ago
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