please help me or I'm gonna fail math​

Manuel needs 20 liters of the 8% and 5 liters of 20% mixtures to be mixed so as to get 30 liters of a mixture of water and 10% lemon juice.

Let x represent the amount of 8% lemon juice in liters and y represent the amount of 20% lemon juice in liters.

Since Manuel wants to produce a 30 liters mixture from 8% lemon juice and 20% lemon juice, hence:

x + y = 30      (1)

Also, Manuel wants 30 liters of a mixture of water and 10% lemon juice, hence:

8% of x + 20% of y = 10% of 30 liters

0.08x + 0.2y = 3         (2)

Solving equation 1 and 2 simultaneously; multiply equation 1 by 0.2 and subtract equation 2 from the result:

0.12x = 3

x = 25 liters

x + y = 30

25 + y = 30

y = 5 liters

Manuel needs 20 liters of the 8% and 5 liters of 20% mixture

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Answer:

x=2, x=1

Step-by-step explanation:

let's solve :

let's take

[tex]2 {}^{2x} = y[/tex]

now,

if y = 16, then :

and if y = 4 :

hence, value of x = 1 or x = 2

Answer:

one seventh or, 1/7

Step-by-step explanation:

first, rise is always over the run, so

x2(3)-x1(1)

_____

y2(9)-y1(-5)

Answer:

i like c ock

Step-by-step explanation:

hopefully this helps !

Answer:

split the shape into two different shapes, find the area of both and then add them together. the answer would be : 46 square centimeters.

Answer: 281.20

Step-by-step explanation:

12,795-795=3515

take 8 percent of that and you get 281.20

Explanation:

Explanation:50 m ≅164 ft (3s.f.)

Explanation:50 m ≅164 ft (3s.f.)50 m/s≅164 ft/s

Explanation:50 m ≅164 ft (3s.f.)50 m/s≅164 ft/sdistance after 20s:

Explanation:50 m ≅164 ft (3s.f.)50 m/s≅164 ft/sdistance after 20s:d=164 ft/s ⋅20s

Explanation:50 m ≅164 ft (3s.f.)50 m/s≅164 ft/sdistance after 20s:d=164 ft/s ⋅20s=3280 ft

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Answer:

0.043

Step-by-step explanation:

The missing statements and their reason are shown below.

A figure which is formed by two rays or lines that shares a common endpoint is called an angle.

1. m∠LOM = m∠JKI and m∠MON = m∠IKH

 Reason : Given

2.  m∠LOM + m∠MON = m∠JKI +m∠MON

   Reason :equals are added to another remains equal.

3.  m∠LOM + m∠MON = m∠JKI +m∠JKH

   Reason :m∠MON = m∠IKH.

4. m∠LOM + m∠MON = m∠LON

   m∠JKI +m∠JKH = m∠HKJ

   Reason: parts are equal to whole.

5. m∠LON = m∠HKJ

   Reason: from point 3 and 4

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Answer:

series

Step-by-step explanation:

the answer of the question is series

Answer:

2 cm/3 cm

Step-by-step explanation:

Diameter of smaller circle = 8cm

Diameter of bigger circle = 12 cm

8cm/12cm = 2/3

Step-by-step explanation:

(7 x 10^*13) (3.39 x 10^*5)

= 23.73 × 10¹⁸

=2.373 × 10¹⁹

Hello there!

(7x10^13)(3.39x10^5)

70,000,000,000,000

339,000

2.373x10^19

Hope this helps!

#HaveAnAmazingDay

[tex](: GraceRosalia :)[/tex]

Answer:

x =4

y = -2

Step-by-step explanation:

a) x - y = 6

b) 2x + 5y = - 2

a) x = y + 6

b) 2(y+6) + 5y = -2

2y + 12 + 5y = -2

7y = -2 -12

y = -14/7

y = -2

a) x - (-2) = 6

x +2 = 6

x = 6-2

x = 4

Answer:

4.63636363636

Step-by-step explanation:

Answer:

1 -2 5 /11 - -7 1 / 11

2 5/11

= 2.27

7 1 / 11

6.45

= -4 . 18

Answer:

169 I think?

Step-by-step explanation:

if you look at images of number rows 169 is the only one in it with the others

Answer:

second graph

Step-by-step explanation:

the line running at same rate

Answer:

2,795,173,960 miles

Step-by-step explanation:

Metric: 4,498,396,441 km English: 2,795,173,960 miles Scientific Notation: 4.4983964 x 109 km (3.0069923 x 101 A.U.) By Comparison: 30.070 x Earth

Answer:

168

Step-by-step explanation:

first find out how many rows of squash there are

21 = x + 2x

21 = 3x

7 = x

then find out how many rows of tomatoes there are

7 × 2 = 14

if there are 12 plants per row, we can multiply

14 × 12 = 168

Gardener Gary planted 168 tomato plants

Let the rows of tomato be x and the rows of squash be y.

So, we have:

x + y = 21

The statement twice as many rows of tomatoes as rows of squash means that:

x = 2y

Substitute x = 2y in x + y = 21

2y + y = 21

This gives

3y = 21

Divide by 3

y = 7

Substitute y = 7 in x = 2y

x = 2 * 7

x = 14

This means that Gary planted 14 rows of tomato.

The number of tomato plants is then calculated using

Tomato plants= 14 * plants per row

This gives

Tomato plants = 14 * 12

Evaluate the product

Tomato plants = 168

Hence, Gardener Gary planted 168 tomato plants

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Answer:

y = -2x - 5

Step-by-step explanation:

y = is a standard for any equation, as is the use of x as a variable, unless something else is specified.

-2x is the way to denote a slope of -2, and -5 gives you the y-intercept of 5. One point on this line would be (0, -5).

Answer:

The highest value I could get, without going over, is 5+1=6 and 25+1=26

Step-by-step explanation:

Answer:

1.20912547529

Step-by-step explanation:

Answer:

here

x=2 then,

3*2^2 - 2*2+1

3*4-4+1

12-4+1

9

Step-by-step explanation:

Simplify:

3x^2 - 2x + 1

=> 3(2)^2 - 2(2) + 1 [∵ x = 2 (Given)]

=> 3(4) - 2(2) + 1

=> 12 - 4 + 1

=> 13 - 4

=> 9 Ans.

Answer:

x= 376

Step-by-step explanation:

100/25=4

94*4=376

Answer:9 ft

Step-by-step explanation:

It would be 9 ft because that's the smallest piece of wood he can use

Answer:

It is 8.72 if it needs to be rounded up. If not, it is 8.71779788708

Step-by-step explanation:

Answer:

The answer is b

Step-by-step explanation:

x represensts the number of hours worked with 9.50 for every hour and then you  add an extra 20 because that's what his job gives him just for showing up

Answer:

DA?

Step-by-step explanation:

I'm not the brightest I'm sorry but i think it might be D A something..

Proved that the [tex]$$ \angle C A B \cong \angle D B A \text $$[/tex]

Similar triangles have the same form but differ in size. Similar items include all equilateral triangles and squares of any side length. In other words, if two triangles are comparable, their corresponding angles and sides are in proportion.

The intercept theorem, also known as Thales' theorem, fundamental proportionality theorem, or side splitter theorem, is a basic geometry theorem that describes the ratios of various line segments formed when two intersecting lines are intercepted by a pair of parallels.

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Answer:

p = 125/73

Step-by-step explanation:

−p − 13 = −43p + 23 (5p − 6)

−p − 13 = −43p + 115p − 138

−p − 13 = 72p − 138

+p            +p

-----------------------------

-13 = 73p - 138

+138         +138

-----------------------------

125 = 73p

/73     /73

-----------------------------

125/73 = p

If you need the answer in mixed fraction, then it's --> p = 1 52/73

The solution to the given equation is p = - 1.71

To determine the solution of the given equation,

We will find the value of the variable, p, that satisfies the equation.

From the question, the given equation is

[tex]-p-13 = -43p+23(5p-6)[/tex]

To solve this,

First, Clear the brackets

[tex]-p-13 = -43p + 115p - 138[/tex]

Now, Collect like terms

[tex]-p +43p -115p = -138 + 13[/tex]

[tex]73p = -125[/tex]

Now, divide both sides of the equation by 73

[tex]\frac{73p}{73} = \frac{-125}{73}[/tex]

∴ p = - 1.71

Hence, the solution to the given equation is p = - 1.71

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   volume of a sphere = ⁴/₃ πr³

⇒      972π in³  = ⁴/₃ πr³

            729 in³ = r³

                   r    = 9 in

Answer:

9 inches

Step-by-step explanation: