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Contact [7]
3 years ago
9

Set up the equation, relating the new ratio of salt

Mathematics
2 answers:
stiv31 [10]3 years ago
7 0

Answer:

the  answer is A

Step-by-step explanation:

melisa1 [442]3 years ago
6 0

Answer:19.2(160-x)=20/100

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I need the answer for this exact question
denis23 [38]

Answer:

y=\frac{7}{2}x-20

Step-by-step explanation:

Let the equation of the line be y-y_1=m(x-x_1) where, 'm' is its slope and (x_1,y_1) is a point on it.

Given:

The equation of a known line is:

y=-\frac{2}{7}x+9

A point on the unknown line is:

(x_1,y_1)=(4,-6)

Both the lines are perpendicular to each other.

Now, the slope of the known line is given by the coefficient of 'x'. Therefore, the slope of the known line is m_1=-\frac{2}{7}

When two lines are perpendicular, the product of their slopes is equal to -1.

Therefore,

m\cdot m_1=-1\\m=-\frac{1}{m_1}\\m=-\frac{1}{\frac{-2}{7} }=\frac{7}{2}

Therefore, the equation of the unknown line is determined by plugging in all the given values. This gives,

y-(-6))=\frac{7}{2}(x-4)\\y+6=\frac{7}{2}x-14\\y=\frac{7}{2}x-14-6\\\\y=\frac{7}{2}x-20

The equation of a line perpendicular to the given line and passing through (4, -6) is y=\frac{7}{2}x-20.

3 0
3 years ago
Can you help me with these too?<br> its for a geometry final practice<br> plisss
nikklg [1K]

Answer:

C. 57°

Step-by-step explanation:

All triangles have a sum of 180°.

m∠D + m∠E + m∠F = 180°

35° + m∠E + 88° = 180°

123° + m∠E = 180°

m∠E = 57°

5 0
2 years ago
Read 2 more answers
Find the derivative of sin2X<br>​
inn [45]

Step-by-step explanation:

Derivation using Product rule : -

To find the derivative of f(x) = sin 2x by the product rule, we have to express sin 2x as the product of two functions. Using the double angle formula of sin, sin 2x = 2 sin x cos x. Let us assume that u = 2 sin x and v = cos x. Then u' = 2 cos x and v' = -sin x. By product rule,

f '(x) = uv' + vu'

= (2 sin x) (- sin x) + (cos x) (2 cos x)

= 2 (cos2x - sin2x)

= 2 cos 2x

This is because, by the double angle formula of cos, cos 2x = cos2x - sin2x.

Thus, derivation of sin 2x has been found by using the product rule.

5 0
2 years ago
Read 2 more answers
You take a trip by air that involves three independent flights. if there is an 76% chance each specific leg of the trip is on ti
bekas [8.4K]
I think around 44% chance that all three flights would arrive on time, but i'm not that sure.
3 0
3 years ago
(BRAINLIEST)How many solutions does this system have?
max2010maxim [7]

Answer:

Answer:

No solutions

Step-by-step explanation:

6 - 3x = 4 - x - 3 - 2x

6 - 3x = 1 - 3x

6 = 1

No solutions (6 does not equal 1)

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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