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dusya [7]
3 years ago
7

Rachel has 8 coins. The amount of her coins is 74 cents what coins does rachel have

Mathematics
1 answer:
Brums [2.3K]3 years ago
4 0

Answer:

Two quarters (50 cents)

Two dimes (20 cents)

Four pennies (4 cents)

Step-by-step explanation:

Guess and check.  

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The Jackson family went out to dinner
vovikov84 [41]

Answer:  Amount that the Smith family need to pay for the meal including tax and tip = 53.47.

Step-by-step explanation:

Since we have given that

Price of the meal = 43.45

Rate of sales tax = 7%

Amount becomes after the sales tax is given by

\frac{7}{100}\times 43.45\\\\\frac{304.15}{100}\\\\=3.0415\\\\\text{Amount}=43.45+3.0415=46.4915

Rate of tips over meal and sales = 15%

Amount of tips is given by

\frac{15}{100}\times 46.4915\\\\=0.15\times 46.4915\\\\=6.974

So, Amount becomes

46.4915+6.974\\\\=53.465\\\\=53.47

Hence, Amount that the Smith family need to pay for the meal including tax and tip = 53.47.


3 0
3 years ago
Find the discriminant, describe the types of roots, and find the solution for 3x^2-24x+12
solniwko [45]
The discriminant of a polynomial is given by:
 b ^ 2-4ac
 Substituting the values we have:
 (-24) ^ 2-4 * (3) * (12) = 432
 Since the discriminator is greater than zero, then the roots are real.
 x = (- b +/- root (b ^ 2-4ac)) / (2a)
 Substituting the values:
 x = (- (- 24) +/- root (432) / (2 * (3))
 x = (- (- 24) +/- root (432) / (2 * (3))
 x = (- (- 24) +/- root (144 * 3) / (2 * (3))
 x = (24 +/- 12raiz (3) / (6)
 x = 4 +/- 2raiz (3)
 The roots are:
 x1 = 4 + 2raiz (3)
 x2 = 4 - 2raiz (3)
 Answer: 
 432
 the roots are real.
 
x1 = 4 + 2raiz (3)
 
x2 = 4 - 2raiz (3)
4 0
2 years ago
In the coordinate plane, line p has a slope of 8 and y-intercept (0,3). What are the slope and y-intercept of line r?
Aleksandr [31]

Answer:

y  = 8x + 3

Step-by-step explanation:

The line we are describing here is line p;

 slope of line p = 8

  y- intercept = (0,3)

y-intercept of a line is the point where it crosses the y-axis. At this point, the x = 0

So;

  Slope of the line = 8

   y-intercept  =  3

Equation of the line;

       y  = mx + c

y and x are the coordinates

m is the slope

c is the y-intercept

      y  = 8x + 3

6 0
2 years ago
Pls show me proof, thank you
Karo-lina-s [1.5K]

The y has to be negative but the x positive. So that leaves only (3,-4)

4 0
3 years ago
A football team loses 5 yards on each of 3 consecutive plays. What signed number represents the team's total loss of yards on th
mario62 [17]

Answer:

change below :)

Step-by-step explanation:

You would start out at in the middle of a number line (horizontal). After the first play, you would move to the left on the line 5 spots (to simulate 5 yards lost) and then make a dot to show your new position. You would do the same thing for the next two plays, moving 5 spots to the left each play and creating a new starting point each time. The total spots moved after the 3 plays is 15 spots to the left.

3 0
2 years ago
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