Can anyone help me with these questions please?

Answer:

a) how many stamps are worth $0.10 and how many are worth $0.20

b) x + y = 15

   .10x + .20y = 2.40

Step-by-step explanation:

Answer:

your best bet is 67.38

Step-by-step explanation:

Answer:

You can make the mixed numbers int improper fractions and then into decimals

Step-by-step explanation:

Answer: 4, 8, 7, 9, 0, 3, 4, 1, 6, 27

Step-by-step explanation:

Answer:

the second equation

Step-by-step explanation:

y=mx+b

at x=0 y=2 , then b=2

at x=2 y=3

3= 2m+2

2m= 1

m=1/2

y= 1/2 x +2

Answer:

They are vertical angles :)

Step-by-step explanation:

Answer:

Dave has 9 bottles of water

Step-by-step explanation:

12-3=9

Answer:

1) a

2) c

3) a

Step-by-step explanation:

1) Subsitute

2.14x - 42.9 = ?

2.14(22.4) - 42.9 = ?

47.936 - 42.9 = ?

= 5.036

2) Factor out

6y^2 + 27y

both have 3 and y in common so ...

3y(2y + 9)  

3) Distribute

12m(m - 3n)

12m * m = 12m^2

12m * -3n = -36mn     the only reason -3 is NOT a positive is b/c it has subtraction sign b4 the number

put it in order:

12m^2 - 36mn

Answer:

150

Step-by-step explanation:

The required percent error by Samantha is 50%, as of the given condition,

The percentage is the ratio of the composition of matter to the overall composition of matter multiplied by 100.

Errors are discrepancies between values that are seen and natural truths.

Here,
Samantha guessed there were 375 jelly beans.
The actual amount of jelly beans in the jar was 250.
Error percentage = 375-250 / 250 × 100
                           = 0.5 × 100
                           = 50%

Thus, the required percent error by Samantha is 50%, as of the given condition.

Learn more about percentages here:

brainly.com/question/13450942

#SPJ5

Answer:

21.75 or [tex]21\frac{3}{4}[/tex]

Step-by-step explanation:

You have to convert from a mixed number to a decimal. You can follow the following steps: To do this:

1.) You must divide the fraction's numerator by the denominator.

2.) You must now add the quotient obtained to the part of the Whole number.

you will get:

[tex]{\large\boxed{\fcolorbox{7}{\frac{1}{4}=7+0.25=7.25 }}[/tex]

The scale of the image that maps "Figure a" to "Figure b" is:

[tex]{\large\boxed{\fcolorbox{1:7.25}}[/tex]

3.) You have to multiply by 7.25 the length of the corresponding side of "Figure A" in order to find the value "x."

The final result will be:

[tex]{\large\boxed{\fcolorbox{x=(3)(7.25)}}[/tex]

[tex]{\large\boxed{\fcolorbox{x=21.75}}[/tex]

Answer:The equation would be 230 = 25y + 10x + 1x or 230 = 25y + 11x

You would then need to solve for x and y, which I forget how to do with 2 variables but since we're working with small numbers what I would do is continuously subtract 25 from 230 until the remainder is divisible by 11.

230 - 25*7 = 55 = 11*5

x = 5

Ok, adding the equation 2x+y = 17 you will now be able to solve for the two variables using a system of equations.

yes, you can come up with an equation. actually, you can come up several equations to generate a system of equations.

your first equation is correct.

(1) 25q + 10d + 1p = 230

now, you're told that the number of dimes equals the number of pennies. that just means, in symbols:

(2) d = p

finally, you're told that you have 17 coins in all, i.e.:

(3) q + d + p = 17

you now have three equations and three unknowns. use (2) to reduce (1) and (3).

(1′) 25q + 11d = 230

(3′) q + 2d = 17

now solve for the three variables.

Answer:

7 quarters

Step-by-step explanation:

We can use the guess method.

17 coins altogether, and as many dimes as pennies.

The number of quarters must be odd. When you subtract an odd number of quarters from 17, you get an even number which will divide by 2 evenly giving you the same number of pennies and dimes.

Start with a guess of 7 quarters.

17 - 7 = 10

7 quarters + 5 pennies + 5 dimes have a value of $2.30

Wow, I got it with the first guess.

Answer: 7 quarters

9514 1404 393

Answer:

  see attached

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you of the relationships between sides and trig functions. The relevant relations here are ...

  Sin = Opposite/Hypotenuse

  Cos = Adjacent/Hypotenuse

In your diagram, leg 'a' is opposite angle α and adjacent to angle β. Similarly, leg 'b' is opposite angle β and adjacent to angle α. The hypotenuse is 'c' in all cases.

So, filling the table is a matter of identifying adjacent and opposite legs. You will notice that the sine of α is the cosine of β and vice versa.

Answer: 0.00065062

Step-by-step explanation:

i used a calculator ✌️

Answer:

b) 490 cm^3

Step-by-step explanation:

large portion block = 10x6x7 = 420

small portion block = 2x5x7 = 70

420+70 = 490 cm^3

Answer:

5

Step-by-step explanation:

260 weeks divided by however many weeks in a year which is 365÷7 which is 52.14 so it would be rounded to 52

260÷52⇒5

Answer:

The GCF, or greatest common factor, of 36 and 48 is 12.

Step-by-step explanation:

Answer:

The GCF, or greatest common factor, of 36 and 48 is 12.

Answer is 12.

I hope it's helpful!

Answer:

1200 is ur wsener

Step-by-step explanation:

Answer:

1,200 is the result to the problem

Answer:

3 fish

Step-by-step explanation:

4g / 4/3 fish

4/1 ÷ 4/3 = 4/1 · 3/4 = 3

Here is your answer. Hope it helps

Answer:

(0,3)

Step-by-step explanation:

Answer:

0, 3

Step-by-step explanation:

first find the x axis variable, (0), then find the y axis variable, (3).

Answer:

2. 0 or B. 0

Step-by-step explanation:

First you need to find g(6) which is -2 now plug in -2 into the function f. So 6(-2)+12=0

Answer:

21. yes 22. yes 23: no 24:no 25:yes

EZ

Answer:

$12,088

Step-by-step explanation:

Value = $28,000

Rate, r = 14% = 0.14

Time = 6 years

Using an exponential function :

A = Pe^-rt

P = initial value

A = final worth

A = 28000*e^-(0.14*6)

A = 28000 * e^-0.84

A = 28000 * 0.4317105

A = 12087.894

Worth after 6 years = $12,088

Answer:

I think Teresa needs 6 tablespoons of butter..

Step-by-step explanation:

Hope this right...but if it's not,im so sorry