Given that x = 5 and y = 9, evaluate the expression using -4xy - 6x2 + 2x2y - 6y

Answer:

2[3+4/-2(3-4)]+3

Step-by-step explanation:

2[3+-2(-1)] +3

2[3+2] +3

2(5) +3

10+3

13

At time t, the first pool contains 50+2.3t gal of water, while the second pool contains 102.2-3.5t gal.

They contain the same amount of water when these quantities are equal:

50 + 2.3t = 102.2 - 3.5t

5.8t = 52.2

t = 9

so the pools have the same amount of water after 9 min have passed.

The pools will contain same amount of water in 9 minutes

Let the number of minutes that the pools contain the same amount of water be represented by t.

Since the first pool contains 50 gallons of water and is filling at a rate of 2.3 gallons per minute, then this will be:

= 50 + (2.3 × t)

= 50 + 2.3t ......... equation i

The second pool contains 102.2 gallons of water and is draining at a rate of 3.5 gallons per minute. This will be:

= 102.2 - (3.5 × t)

= 102.2 - 3.5t ........ equation ii

Equate both equations and this will be:

50 + 2.3t = 102.2 - 3.5t

Collect like terms

2.3t + 3.5t = 102.2 - 50

5.8t = 52.2

Divide both side by 5.8

5.8t/5.8 = 52.2/5.8

t = 9

In conclusion, they'll have same amount of water in 9 minutes

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Let's assume the number as x .

15% of x = [tex]\dfrac{x \times 15}{100} [/tex]

→ [tex]\dfrac{3x}{20} [/tex]

So after reducing 15% the number will be 6154 .

→ x - 3x/20 = 6154

→ 17x/20 = 6154

→ 17x = 6154 × 20

→ 17x = 123080

→ x = 123080/17

So the number is 7240

Anwser: 41°

Okay so every triangle is 180° degrees in total.

We need to find the angle of x in the triangle BDC.

We know that the angle of x is 180 - ( x + 15)

We also have another triangle named BAD

Which angles are 90 + 56 + x

the angle of D in the triangle BDC is 180 -58 = 124

So 124 + 15 = 139

180 - 139 = 41

Answer:

$322000

Step-by-step explanation:

A woman owns the W½ of the NW¼ of the NW¼ of a section.

= 640/2/4/4 = 20 acres

She wants to buy remaining of NW 1/4  = 640/4-20 = 140 acres.

It would cost = 140*2300 = $322000

Therefore, it cost $32000 to purchase the part.

Answer: (e-5)^2

Step-by-step explanation:

The box method is a good way to solve this, but for a quick explanation, start by finding a single value that when added gets -10 and when multiplied gets +25. We can find that this term is -5. We the can situate -5 into (e-5)^2 equation, where if you FOIL, you will be back at the unfactored equation. Hope this helps

The factored form of e² - 10e + 25 is (e - 5)².

To factor the expression e² - 10e + 25, we can use the method of recognizing it as a perfect square trinomial. A perfect square trinomial is a quadratic expression of the form (a - b)², where 'a' and 'b' are constants.

In the given expression, e² - 10e + 25, the first term (e²) and the last term (25) are perfect squares, and the middle term (-10e) is twice the product of the square roots of the first and last terms.

So, we can rewrite the expression as:

(e - 5)²

Now, if we expand (e - 5)², we get:

(e - 5)(e - 5) = e² - 10e + 25

Therefore, the factored form of e² - 10e + 25 is (e - 5)².

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Answer:

192

492

Step-by-step explanation:

Answer:

Mayonnaise is made by combining lemon juice or vinegar with egg yolks. Eggs (containing the emulsifier lecithin) bind the ingredients together and prevent separation. Then, oil is added drop by drop as the mixture is rapidly whisked.

Answer:

-1/2

Step-by-step explanation:

Pick two points on the line

( 0,0) (2,-1)

We can use the slope formula

m = (y2-y1)/(x2-x1)

   = (-1-0)/(2-0)

   = -1/2

    = -1/2

Answer: Total products = 108

Step-by-step explanation: Ratio of solid to liquid products is 3:4 and there are 36 solids, so:

[tex]\frac{3}{4} = \frac{Pl}{36}[/tex]

[tex]Pl = \frac{36.3}{4}[/tex]

Pl = 27

Ratio of solid to gas is 4:5:

[tex]\frac{4}{5}=\frac{36}{Pg}[/tex]

[tex]Pg=\frac{36.5}{4}[/tex]

Pg = 45

Total products is the sum of all products:

P = Ps + Pl + Pg

P = 36 + 27 + 45

P = 108

There are a total of 108 products.

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Explanation:

The original transformation (2x, y+5) takes any x value and doubles it. So the inverse of this is to cut the x value in half. We can say x/2 since division is the opposite of multiplication. The value x/2 is the same as ½x

For the y coordinate, we add on 5 for the original transformation. Subtraction undoes addition meaning the inverse will have y-5.

Side note: the inverse notation [tex]T^{-1}[/tex] can be written as T^(-1).

Answer:

(5, 1) (Answer C)

Step-by-step explanation:

Note that the second equation features x as a function of y:  x = y + 4.  We can substitute y + 4 for x in the first equation, obtaining:

y + 4 + y = 6

and then, after we combine like terms,

2y = 2, or y = 1.

x = y + 4, subbing 1 for y here results in x = 1 + 4, or x = 5

The solution is (5, 1) (Answer C)

Answer:

Step-by-step explanation:

A can is cylindrical in nature and volume of a cylinder is expressed as;

V = πr²h where;

r is the radius of the cylindrical can

h is the height of the can.

Given parameters

Volume of the can of soup = 20πin³

diameter of the can = 4inches

Since diameter = 2r

radius = d/2 = 4/2 = 2inches

Required parameter.

Height of the can

Substituting the given parameters into the formula to get the height h will give;

20π = πr²h

20 = r²h

20 = 2²h

20 = 4h

Divide both sides by 4:

4h/4 = 20/4

h = 5inches

Hence the heighr of the can is 5 inches

Answer:

it is already in standard form

Step-by-step explanation:

Answer:

Step-by-step explanation:

The first form above is "standard form" in the US.

The second form above is "standard form" in the UK.

Answer:

x=0

Step-by-step explanation:

2(x+4)- 5 = 3x+3

Distribute

2x+8-5 = 3x+3

Subtract x values

8-5 = x+3

3 = x+3

Final Subtraction

x = 0

Answer:

x=0

Step-by-step explanation:

Use Cymath it helps with problems like that... www.cymath.com

Answer:

D

Step-by-step explanation:

To find the inverse, all we have to do is switch the x and f(x) so instead of f(x)  = 5x + 6, it becomes:

x = 5f(x) + 6

x - 6 = 5f(x)

f⁻¹(x) = (x - 6) / 5

Answer:

9.17(approx) is correct answer

exact answer:9.1651513899116

first u need to find the square root of 81 that is 9 then I have to divide 9 by 9×3...after this u have to add 9 in the result..

Answer:

33

Step-by-step explanation:

Subtract Japans parks from Canadas parks

70 - 37 = 33

Answer:

70-37=33

so Canada have 33 more national parks than Japan

Step-by-step explanation:

Part of question :

(x-10)^2+(y-10)^2=100

(16-10)^2+(18-10)^2=100

Answer:

Yes, equation of circle is true

Step-by-step explanation:

(x-10)^2+(y-10)^2=100

(16-10)^2+(18-10)^2=100

100=100

plugging the coordinates into the equation of the circle, we observe that the equation is true since both sides of the equation are equal(value on both sides of the equal sign are same). This wouldn't be true if for instance the left side of the equation evaluated to ≠100. Therefore we can conclude that the rose bush lies on circle since the equation is true

Answer:

1200 hours

Step-by-step explanation:

multiply 60 x 5 then 300 x 4

Answer/Step-by-step explanation:

Segments AB and AC are both radii of the circle with center A. All radii of a circle are always equal, tgerefire,:

[tex] AB = AC [/tex]

Segments AB and BC are both radii of the circle with center B. All radii of a circle are always equal, therefore:

[tex] AB = BC [/tex]

Thus,

[tex] AB = AC = BC [/tex]

∆ABC has sides AB, AC, and BC, which are all equal (equal radii).

Therefore, ∆ABC is an equilateral triangle.

An equilateral triangle has 3 equal sides.

Answer:

(Northeast, South, Midwest, and West) hope is the right answer

Answer: The Northeast, Southwest, West, Southeast, and Midwest

Step-by-step explanation:  

Answer:

y = 5x- 26

Step-by-step explanation:

x is the independent variable, which means solve for y

y + 6 = 5(x-4)

Distribute

y+6 = 5x -20

Subtract 6 from each side

y+6-6 = 5x -20-6

y = 5x- 26

y = 5x- 26

↗️⬆️⬆️↖️

 Answer

Answer:

treatment

Step-by-step explanation:

hope this helps, I did OSM 202 MC , as well.

The TREATMENT sum of squares measures the variability of the sample treatment means around the overall mean.

The sum of squares is used to measure the variation about the mean, In ANOVA we have:

• Sum of square Error : measures the variation between each observation in a group and the mean of that group.

• Sum of square treatment : measures the variation between the mean of each group and the overall mean.

• Total Sum of Square : measures the variation between each observation and the overall sample mean.

Hence, Treatment sum of squares measures variation between sample treatment and overall sample mean.

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Answer:

A

Step-by-step explanation:

The secant- tangent angle 78° is half the difference of the intercepted arcs

[tex]\frac{1}{2}[/tex] (204 - x) = 78 ( multiply both sides by 2 )

204 - x = 156 ( subtract 204 from both sides )

- x = - 48 ( multiply both sides by - 1 )

x = 48

Answer:

A.) 48

Step-by-step explanation:

I got it correct on founders edtell

=============================================

Explanation:

Any number you'll encounter so far in your math course will be a real number. This is until you get to something like [tex]\sqrt{-1}[/tex] which is a complex number, but your teacher may not have covered that chapter yet.

Anyways, -5 is a real number because we aren't taking the square root of a negative or anything like that.

-5 is also an integer, but that choice isn't listed. The set of integers is any positive or negative whole numbers, including 0 as well.

Furthermore, -5 is considered rational because -5 = -5/1. We can write -5 as a fraction of two integers where 0 is not in the denominator. With -5 being rational, it cannot be irrational. The term "irrational" means "not rational".

Answer:

B) 1,2

Step-by-step explanation:

Answer:

28.35

Step-by-step explanation:

Answer:

28.35

two negatives make a positive

Answer:

8 right angles

Step-by-step explanation:

1. If two lines are perpendicular then we know they form 4 right angles, so EP and AB from 4 right angles.

2. The question states that AB and CD are parallel. Since we know EP is intersecting AB and CD, we can say that EP is perpendicular to CD as well because of a theorem that states, "...that if there are two parallel lines in the same plane and there is a line perpendicular to one of them, then it is also perpendicular to the other one."

3. So because of that theroem, we can add another 4 right angles from the intersection of EP and CD.

4. When you add all the right angles together, you get 8 right angles in total.

Answer:

ype the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.

AB is parallel to CD, and EP is perpendicular to AB.

The number of 90° angles formed by the intersections of EP and the two parallel lines AB and CD is​Step-by-step explanation:

Answer:

45(1+2)

Step-by-step explanation:

Looking at you options, you can see that 45 is your Greatest common factor (GCF)

45 X 1 = 45

45 X 2 =90

45(1+2)