A box contains $7.45 in nickels, dimes, and quarters. There are 43 coins in all, and the sum of the numbers of nickels and dimes is 3 less than the number of quarters. How many coins of each kind are there?

Answer:

28%

Step-by-step explanation:

100%-72%

=28%

So,about 28% of the earth surface is covered by dry land.

Answer = 28%

Explanation:

If 72% = water then dry land =

100% - 72% =

28%

Answer:

            5 spugs is 560% of 1 spig

Step-by-step explanation:

a - spig

b - speeg

c - spoog

d - spug

40% of one spig is a spoog:  40%a = c

25% of a speeg is a spoog:    25%b = c

70% of a speeg is a spug:       70%b = d

what percent of 1 spig is 5 spugs?:     x%a = 5d

40%a = c  and  25%b = c

40%a = 25%b

[tex]b=\frac{40\%a}{25\%}=1.6a[/tex]

d = 70%b = 70%•1.6a = 112%a

x%a = 5d

x%a = 5•112%a

÷a         ÷a

x% = 560%      

Answer:

The answer is A, 2n - 9

Step-by-step explanation:

9 less than (-9)             twice n  (2n)

2n - 9

Answer:

  Leon's

Step-by-step explanation:

Since we're interested in peanuts, we can rewrite the ratios with peanuts first:

  L: peanuts : pretzels = 3 : 8

  C: peanuts : pretzels = 2 : 6 = 1 : 3 = 3 : 9

Leon's recipe has a higher proportion of peanuts. (3/8 > 3/9)

Answer:

[tex]\boxed{y=-\frac{1}{2}x+2}[/tex]

Step-by-step explanation:

[tex]2x+4y=8\\\\2x-2x+4y=8-2x\\\\4y=8-2x\\\\\frac{4y=8-2x}{4}\\\\y=2-\frac{2}{4}x\\\\ y=2-\frac{1}{2}x\\\\\boxed{y=-\frac{1}{2}x+2}[/tex]

Hope this helps.

Answer:

y=4-x/2

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Here, we want to know what what the display on the calculator means.

Well, the expression has to do with how scientific calculators display powers of 10.

So what this means is that the value 3.456 is raised to the power of 14.

This is a way in which the screen of the scientific calculators maximizes the space on their screens.

Perhaps, we have the result of a multiplication to the powers of 27. It would be quite funny seeing 27 zeros lying on the screen of the calculator right? isn’t it?

So the calculator makes a better way of this by just printing E 27 and this automatically means 10 raised to the power of 27

This makes our answer C

Kindly note that the + sign indicates that the power of the 10 is positive 14.

Answer:-30

Step-by-step explanation:

h - 20/j = k solve for j

isolate each term individually [tex]-\frac{20}{j}[/tex] then [tex]h[/tex] then [tex]-20[/tex]

[tex]h-\frac{20}{j}=k\\-\frac{20}{j}=k-h\\j=-\frac{20}{k-h}[/tex]

123 rounded to the nearest 100 is 100

Answer:

c. [105,315]

Step-by-step explanation:

Answer:

Around the 3 + 6:-

(3 + 6) x 9 + 3

Step-by-step explanation:

(3 + 6) x 9 + 3

= 9 x 9 + 3

= 84.

Answer:

[tex](3+6) \cdot 9+3 = 9 \cdot 9 + 3 = 81 +3 = 84[/tex]

Answer:

x+8=-3.

x=-3-8.

x= -11.

Answer:

x=−11

Step-by-step explanation:

The coordinates of Ship A and B are missing, so i have attached it

Answer:

The vessel in distress is located at the coordinate (1, 2)

Step-by-step explanation:

The coordinates attached shows that;

Coordinates of A are (3, 4) while that of B are (1, 1).

We are told that Ship A receives a distress signal from the north, And ship B receives a distress signal from the same vessel from the southeast.

Now, from the image attached, If we imagine extending the line of ship A that is getting distress signal from southeast and also same thing for ship B that is getting signal from north,we'll discover that the lines intersect at a point with co-ordinates of approximately; (1, 2)

Answer:

x = 3

Step-by-step explanation:

To solve this equation, we can use basic algebraic techniques as illustrated.

3(x + 4) = 7x Distribute the 3.

3x + 12 = 7x Subtract 3x from both sides of the equation.

12 = 4x Rearrange the equation so the variables are on the left.

4x = 12 Divide by 4 on both sides of the equation.

x = 3

Answer:

Answer:

The answer is

Step-by-step explanation:

To rationalize the denominator multiply both the numerator and the denominator by

4√3 - 3√2

That's

So we have

We have the final answer as

Hope this helps you

Answer:

4+16=0

4=−16=162

2=±4

Case 1  2=+4

=±2√

√=±(12√+12√)

=±2‾√+2‾√

Case 2  2=−4=43

=±23/2=±2()1/2

∵√=±(12√+12√)

=±(2‾√+2‾√)

So in all,

=2‾√+2‾√

=−2‾√+2‾√

=2‾√−2‾√

=−2‾√−2‾√

Let  √=+

Squaring both sides, we have

=(+)2

0+1=2−2+2⟹

2−2=0(1)

2=1

=12

Plugging in  (1)  … ⟹

2−1(2)2=0

4=14

2=12

∴=±12‾√

∴=±12‾√

∴√=+=±(12+12)

This can also be shown as below

√=12+12

Or

√=−12−12 \

Answer:

What's the answer

Step-by-step explanation:

The recursive function f(7) is = 7.f(8).

A recursive function is a form of arithmetic or geometric sequence which repeats.

According to the given question f(5) = 20.58 and f(6) = 2.9.

Given it is a recursive function so it could be in form of arithmetic sequence or geometric sequence.

We have asked f(7) is how many times of f(8) from here we can conclude that it is in the form of geometric sequence.

f(5) = 20.58 and f(6) = 2.94 so the common ratio of n/(n-1) is

= 20.58/2.94

= 7.

Or we can say that f(5) is 7 times of f(6) which is 7.f(6) = f(5).

∴ f(7) = 7.f(8) = (1/7)f(6) = 0.42.

learn more about recursive function here :

https://brainly.com/question/23896867

#SPJ2

Answer:

The least common denominator of the expression is 72g.

Step-by-step explanation:

First, let us write the expression out mathematically

[tex]\frac{g^{2} }{9} - g^{2} + 14 + \frac{g}{24g} + 8g^{2}[/tex]

The denominators in the expression are 9 and 24g. To find the least common denominator, we will determine the least common multiple of the numbers (9 and 24) first, and then find the least common multiple of the result and g (since it is the only letter).

Multiples of 9 = 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, ...

Multiples of 24 = 24, 48, 72, 96, ...

The least common multiple of 9 and 24 is 72.

Then, the least common multiple of 72 and g is 72g

Hence, the least common denominator of the expression is 72g.

Answer:

A, B, E

Step-by-step explanation:

Three or more points are said to be collinear, if they lie on a single straight line

Answwer:

x<−1

Step-by-step explanation:

Pull out like factors :

  -26x - 26  =   -26 • (x + 1)

Divide both sides by  -26

Remember to flip the inequality sign

Subtract  1  from both sides

           x < -1

Hope it helped!!!

Answer:

forty-eight hundredths

Step-by-step explanation:

Answer:

The answer to the question is -16.

Answeryou should get 16 as uyour answer

Step-by-step explanation: i hope it helps :)

plus u have to simplfy if necssary

Answer:

Max Area = 105,800 sq.ft

Step-by-step explanation:

A square will always give us the maximum area.

Thus, one side would be;

920/4 = 230 feet

So, we want a square 230 ft by 230 ft

however, from the question, we are to use the creek as one side. So, we'll take the 230 ft that we don't need because of the creek and then add it to the opposite side to get 230 + 230 = 460 ft.

Thus,we now have a rectangle with dimensions: 230 ft by 460 ft

Area is given by;

area = length × width

Maximum Area = 230 × 460

Max Area = 105,800 sq.ft

Answer:

(2,2)

Step-by-step explanation:

(5+(-1))/2. (8+(-4))/2

4/2 4/2.

(2,2)

Answer:

Step-by-step explanation:

Area of rectangle = Length ×Breadth

[tex]Length =8x+1\\Breadth = 3x-2\\\\A =\left(8x+1\right)\left(3x-2\right)\\\\=8x\times\:3x+8x\left(-2\right)+1\times\:3x+1\times\left(-2\right)\\\\=8\times\:3xx-8\times \:2x+1\times \:3x-1\times\:2\\\\=24x^2-13x-2[/tex]

Answer:

Below

Step-by-step explanation:

Let y' = mx + b be the equation of the second line

● m is the slope

● b is the y-intercept

The lines are parallel so they have the

same slope.

● y' = 3x + b

The second line crosses the point with the coordinates (2,11)

Replace y' by 11 and x by 2 to find b

● 11 = 3×2 + b

● 11 = 6 + b

Substract 6 from both sides

● 11 - 6 = 6 + b -6

● b = 5

So

● y' = 3x + 5

Answer:

area= 7725

Step-by-step explanation:

A = 75((125+81)/2) A = 75(206/2) A = 75(103) A = 7725 The area is 7725 square feet

Answer:  see proof below

Step-by-step explanation:

Use the following Sum Identities:

cos (A + B) = cosA · cosB - sinA · sinB

sin (A + B) =  sinA · cos B - cosA · sinB

Use the Unit Circle to evaluate the following:

cos 30 = √3/2                            sin 30 = 1/2

cos 45 = √2/2                            sin 45 = √2/2

cos 120 = -1/2                             sin 120 = √3/2

cos 240 = -1/2                             sin 240 = -√3/2                        

cos 315 = √2/2                           sin 315 = -√2/2        

cos 330 = √3/2                          sin 330 = -1/2

Proof LHS → RHS

[tex]\text{LHS:}\qquad \qquad \dfrac{\cos 285+\cos 345}{\sin 435-\sin 375}[/tex]

[tex]\text{Expand:}\qquad \quad \dfrac{\cos (240+45)+\cos (315+30)}{\sin (315+120)-\sin (330+45)}[/tex]

[tex]\text{Sum Identity:}\qquad \dfrac{\cos 240\cdot \cos 45-\sin 240\cdot 45+\cos 315\cdot \cos 30-\sin 315\cdot 30}{\sin 315\cdot \cos 120+\cos315\cdot \sin 120-(\sin330\cdot \cos45+\cos 330\cdot \sin 45) }[/tex]

[tex]\text{Unit Circle:}\quad \dfrac{(\frac{-1}{2}\cdot \frac{\sqrt2}{2})-(\frac{-\sqrt3}{2}\cdot \frac{\sqrt2}{2})+(\frac{\sqrt2}{2}\cdot \frac{\sqrt3}{3})-(\frac{-\sqrt2}{2}\cdot \frac{1}{2})}{(\frac{-\sqrt2}{2}\cdot \frac{-1}{2})+(\frac{\sqrt2}{2}\cdot \frac{\sqrt3}{2)}-(\frac{-1}{2}\cdot \frac{\sqrt2}{2})-(\frac{\sqrt3}{2}\cdot \frac{\sqrt2}{2})}[/tex]

[tex]\text{Simplify:}\qquad \dfrac{-\sqrt2+\sqrt6+\sqrt6+\sqrt2}{\sqrt2+\sqrt6+\sqrt2-\sqrt6}\qquad =\dfrac{2\sqrt6}{2\sqrt2}\qquad =\sqrt3[/tex]

LHS = RHS: [tex]\sqrt3 = \sqrt3\qquad \checkmark[/tex]