A: 15
B: 21
C: 26
D: 105

Answer:

Z=pd+59/2-p

Step-by-step explanation:

2z-pd-pz-59=0

2z-pz=pd+59

z(2-p)=pd+59

z=pd+59/2-p

Answer:

Step-by-step explanation:

[tex]3+11t-9u\\t = 9\\u =11\\\\3+11(9) -9(11)\\\\\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:11\left(9\right)\::\quad 99\\=3+99-9\left(11\right)\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:9\left(11\right)\::\quad 99\\=3+99-99\\\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:3+99-99\:\\:\quad 3[/tex]

Answer:

[tex] - 19[/tex]

Step-by-step explanation:

[tex]3 + 11t - 9u = 3 + 11(9) - 9(11) = 3 + 99 - 121 = - 19[/tex]

Answer:

The central tendency that changes is the median.

Step-by-step explanation:

- The mean without number 4 is 28.

28/7 = 4

But if we add the 4, the mean would be 32.

32/8 = 4

The mean does not change.

- The mode also does not change because the number that appears most frequently is 3.

- And the range does not change either since the range is the subtraction of the largest number with the smallest, in this case:

8 - 2 = 6

- On the other hand, the median is the middle number, without 4 the median would be 3, but with 4 the median would be 4 + 4/2, which is the same 4.

Answer:

slope is -3/5

Step-by-step explanation:

3x + 5y = 15

5y = -3x + 15

y = -3/5x + 3

slope is -3/5

Full question :

A man buys a certain number of oranges at 20 for Rs. 60 and an equal number at 30 for Rs. 60. He mixes them and sells them at 25 for Rs. 60. What is the gain or loss percent?

Answer:

4% loss(percentage loss on cost price)

Step-by-step explanation:

we will be employing algebra in solving this problem :

20 oranges at 60 Rs=60Rs/20 per orange=3Rs per orange

Say x oranges bought at 3Rs per orange=3Rsx

Equal number of oranges at 30 oranges for 60 Rs=60Rs/30 per orange=2Rs per orange

Say x oranges bought at 3Rs per orange=2Rsx

Total Cost Price = 3Rsx + 2Rsx = 5Rsx

He then sells all oranges at 25 for 60 Rs

Therefore price per orange=60/25=12/5Rs

since he sold x+x oranges(from the above calculations)

Total selling price=total oranges *12/5Rs=2x oranges*12/5Rs=24x/5Rs

Profit or loss=24x/5-5x=-x/5

therefore we have a loss =-x/5

Percentage of loss(on cost price)

=x/5÷5x∗100=

=1/25∗100=4%

Answer:

2x+5

Step-by-step explanation:

Five more than two times a number would be 2 times x which is a number plus five because more means adding

Answer: it's 248 I just did the question .

Step-by-step explanation:

Answer:

x = 15

Step-by-step explanation:

Since the triangles are similar we can find x using similarity ratio

14/8 = (x+6)/(x-3) simplify first expression

7/4 = (x+6)/(x-3) cross multiply expressions

7×(x-3) = 4×(x+6)

7x-21 = 4x + 24 add like terms

3x = 45

x = 15

Answer:

true

Step-by-step explanation:

any number to the power of 0 would equal 1

Direct variation uses the equation y = kx, where I is the constant of variation.

1. Is not a direct variation because the line is curving so the change in x is not constant.

2 and 3 Are straight lines, so Show direct variation. You can find 2 points on each line and calculate the slope which would be a constant variation.

Answer:

29.82

Step-by-step explanation:

First you have to do 127.8 divided by 60 to get how many miles he bikes a day, which is 2.13 Next, you multiply 2.13 by 2 weeks 2 weeks = 14 days So from then you do 2.13 x 14 which is 29.82 Chris bikes 29.82 miles in two weeks.

(i answered this question once and i used it from a friend but hope this helps)

Answer:

Step-by-step explanation:

This problem is on the mensuration of flat shapes, a circular shape.

the problem also requires that we find the perimeter of the circular track

the expression for the perimeter of a circle is given as

[tex]C= 2\pi r[/tex]

Given

diameter of the circular track = 75 meters

radius of circular track = d/2 = 75/2= 37.5 meters

Substituting our data into the expression for perimeter we have

[tex]C= 2*3.142 *37.5\\\\C= 235.65[/tex]

Approximately the length is 235 meters.

Answer:

The value of x in this equation is -4.

Step-by-step explanation:

2(4x - 6) = 4(3x - 7)

Distribute 2 to (4x - 6) and distribute 4 to (3x - 7)

8x - 12 = 12x - 28

Subtract 12x form both sides of the equation.

-4x - 12 = -28

Add 12 to both sides of equation.

-4x = 16

Divide -4 on both sides of the equation.

x = -4

The value of x is -4.

Answer:

x=4

Step-by-step explanation:

Starting with 2(4x-6) you apply the distributive law: a(b-c) = ab - ac

a =2,  b=4x, c=6

2(4x-6) = 2*4x-2*6 Then multiply the numbers 2*4

8x-2*6 = multiply 2*6

8x-12

Then for 4(3x-7) you apply the distributive law.

a =4, b=3x, c=7

4*3x-4*7 multiply 4*3

12x-4*7 multiply 4*7

12x-28

Then the equation would be 8x-12 = 12x-28. Add 12 to both sides.

8x=12x-16 Subtract 12x to both sides

-4x=-16 divide both sides by -4

then you'll get Positive 4 as your x.

Answer:

1/4

Step-by-step explanation:

3 red + 6 green = 9 total

P( red) = red/total = 3/9 = 1/3

Now we don't put it back

2 red + 6 green = 8 total

P( green) = green/total = 6/8 = 3/4

P (red, keep,green) = 1/3 * 3/4 = 1/4

Answer:

f (x,y) = sin (x,y)  & points = (1,0)

Maximum  rate of change in f at given point & direction = 1

Step-by-step explanation:

The function & points are not given,

Considering them as general example : f (x,y) = sin (x,y) & points = (1,0)

Maximum rate of change in f (x,y) happens in direction of ∇ f (1,0)

∇  f (x,y) =  [ df / dx ,  df/ dy ]

= [ y cos (xy) , x cos (xy) ]

∇ f (1,0)  = [ 0, cos (0) ] = (0,1)

Magnitude at (1,0) = ∇ f (1,0)  = √ 0^2 + 1^2  = 1

Answer: 34

Step-by-step explanation: B=10 S1=12 S2=12. Add them up

Answer:

I'm assuming the sides are 12 and the bottom 10 so your perimeter is 34

If you count the boxes the line of the triangle takes up, its 12 and the bottom is 10

Sides: 12

bottom: 10

If you add them up:

12 + 12 + 10 = 34

Answer:

The sum of their squares = 29.

Step-by-step explanation:

Let's us first find out the numbers

we must first break number 7:-

1+6=7

2+5=7

3+4=7

And other combinations when we change the number postion

°) now let us look which numbers cubes when added makes 133:-

A) First one 1+6=7

Sum of Cubes=1+216=217 (it does not satisfy our Conditions)

B) Another one 2+5=7

Sum of Cubes 8+125=133 (satisfy the condition)

C) Last one 3+4=7

Sum of cubes 24+64=88 (does not satisfy)

Now we know the numbers(2,5) so as per question we need to find out sum of their square

Square of 2=4

Square of 5=25

Therefore, the sum of there square is 4+25=29.

Using scientific notation it is found that the diameter of a red blood cell in human blood is of:

[tex]7 \times 10^{-3}[/tex] mm.

A number in scientific notation is given by:

[tex]a \times 10^b[/tex]

With the base being [tex]a \in [1, 10)[/tex].

In this problem, the diameter is of 0.007 mm, hence:

[tex]0.007 = 0.07 \times 10^{-1} = 0.7 \times 10^{-2} = 7 \times 10^{-3}[/tex]

Hence in scientific notation, the diameter is:

[tex]7 \times 10^{-3}[/tex] mm.

More can be learned about scientific notation at https://brainly.com/question/16394306

#SPJ1

Answer:

2.556818 miles

Step-by-step explanation:

so you divide the rational number if the decimal on both sides if one is greater and the other less than the number that's greater should have the greater sign. but, if theres a number that's less then you should put the less than sign and if both numbers are the same number you should put the equal sign

Answer:

75 miles squared

Step-by-step explanation:

First we have to convert 1 inch = 5 miles to square miles as that is what we are trying to get

So, 1 inch squared = 25 miles squared

To get 75 miles squared, we multiply both sides by 3.

So 3 * 1 inch squared = 3 * 25 miles squared

Gets us 3 inch squared = 75 miles squared

Answer:

((-9 - 1)/2, (-4 + 6)/2) = (-5,1)

((-5 + x)/2, (1 + y)/2) = (-4,-3)

(-5 + x)/2 = -4

-5 + x = -8

x = -3

(1 + y)/2 = -3

1 + y = -6

y = -7

(-3,-7)

Answer: 48/25

Step-by-step explanation:

Answer:

48/25 as an improper fraction, 1 23/25 as a mixed fraction.

Step-by-step explanation:

It is -8/5 divided by 5/-6.

First of all, you can get rid of the negative signs becasue there are two.  Negative and Negative equals positive, so we already know that the answer will be positive.  

So, we now have 8/5 divided by 5/6.

When you divide fractions, the fraction being divided is turned to it's reciprocal.  To get a fraction's reciprocal, just flip the numerator and denominator's places.  It's that easy!  

Here is an example:  2/3's reciprocal is 3/2.  The numbers just get flipped!

That would mean 5/6's reciprocal would be 6/5.  Don't find the reciprocal of 8/5 because it is not the number that is getting divided.  When you find a reciprocal you can change the division sign into a multiplying sign.

Example:  2/3 divided by 4/5.  Reciprocal of 4/5 is 5/4.  Now it is 2/3 TIMES 5/4.

Back to the problem.

We now have 8/5 TIMES 6/5.  When you multiply fractions, just multiply both numerators, in this case being 8 and 6, and the denominators, in this case being 5 and 5.  So 8 times 6 is 48.  5 times 5 is 25.

We now have 48/25, which can be reduced to 1 23/25!  

For the mixed number, if you are confused, 25 goes into 48 only one time.  So, the whole number is 1.  but when 25 goes into 48 only one time, there is still 23 left because 48-25= 23.  23 is our new numerator!  The denominator stays the same.  So, it's 1 23/25.  :)

Assuming you are saying 1 cm to 25 cm, the answer is 450 cm or 4.5 meters.

For every 1 cm of the model, it is 25 cm in real life.

The model is 18 cm long.

18×25=450 cm

There are 100 cm in a meter.

450÷100 is 4.5

The car is 4.5 meters in real life.

♡ Hope this helps! ♡

❀ 0ranges ❀

Answer:

1. 5040

2. 20

Step-by-step explanation:

1. using the formula for permutation

nPr=n!/(n-r)!

10P4 = 10!/(10-4)!

=10*9*8*7*6!/6!

then we are left with

=10*9*8*7

=5040

2.using the formula for combination

nCr=n!/(n-r)!r!

6C3=6!/(6-3)!3!

=6*5*4*3!/3!3!

=6*5*4/3*2*1

=20

Answer:

The function would be 20.00

Step-by-step explanation:

I think...I dont really know if any of those numbers are functions cause I always have ordered pairs as functions but whatever lol

Answer:

21

Step-by-step explanation:

Use PEMDAS

P ---> Parenthesis

E ----> Exponents

M & D -------> Multiplication & Division

A & S ------> Addition & Subtraction

5 + 4*(8 - 6)² = 5 + 4*(2)²

                     = 5 + 4*4

                     = 5 + 16

                     = 21

Answer:

$44.03

Step-by-step explanation:

Payment due:

19% tip:

Total payment:

$ 44.03 to be paid in total including 19% tip.

Answer:

the tip you would give is $7.03

Answer:

11x - y

Step-by-step explanation:

Answer:

Step-by-step explanation:

divide through by the coefficient of [tex]x^{2}[/tex]

[tex]\frac{5x^{2} }{5}[/tex] + [tex]\frac{16x}{5} + \frac{-40}{5} = \frac{8}{5}[/tex]

[tex]x^{2} +\frac{16}{5}x -8 =\frac{8}{5}[/tex]

[tex]x^{2} +\frac{16}{5} x = \frac{8}{5} +8[/tex]

[tex]x^{2} + \frac{16}{5} x =\frac{48}{5}[/tex]

Add half of the square of the coefficient of x  to both sides [tex](\frac{1}{2} X \frac{16}{5} ) ^{2}[/tex]

[tex]x^{2} + \frac{16}{5}x + (\frac{1}{2} X \frac{16}{5} )^{2} =[/tex] [tex]\frac{48}{5} +(\frac{1}{2} X \frac{16}{5} )^{2}[/tex]

[tex]x^{2} +\frac{16}{5} x +(\frac{16}{10}) ^{2} =\frac{48}{5} +\frac{64}{25}[/tex]

[tex](x +\frac{16}{10})^{2} =\frac{304}{25}[/tex]

[tex]x +\frac{16}{10} =[/tex]±[tex]\sqrt{\frac{304}{25} }[/tex]

[tex]x = -\frac{16}{10}[/tex] ± [tex]\sqrt{\frac{304}{25} }[/tex]

[tex]x=-\frac{16}{10} + \sqrt{\frac{304}{25} }[/tex] or[tex]-\frac{16}{10} - \sqrt{\frac{304}{25} }[/tex]

[tex]x = 1.89[/tex] or -5.09