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iren [92.7K]
3 years ago
15

Can Kayla conclude that ∆ABC and ∆EDC are similar?

Mathematics
1 answer:
Kisachek [45]3 years ago
4 0

Answer:yes

Step-by-step explanation:

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A box contains 76 coins, only dimes and nickels. The amount in the box is $4.90. How many dimes and how many nickels are in the
dangina [55]

The number of dimes is 75 coins.

The number of nickels is 1 coin.

<u>Step-by-step explanation:</u>

It is given that,

A box contains 76 coins, only dimes and nickels.

  • The 10 cent coin is called a dime.
  • Let, the number of dimes be x.
  • The 5 cent coin is called a nickel.
  • Let, the number of nickels be y.

<u>This is represented by the system of equations :</u>

x + y = 76  -------(1)

10x + 5y = 4.90  ------(2)

Multiply eq (1) by 5 and subtract eq (2) from eq (1),

 5x + 5y = 380

-<u>(10x + 5y = 4.90)</u>

 <u>-5x       = 375.1</u>

x = 375/5

x = 75 coins.

The number of dimes is 75 coins.

Substitute x=75 in eq (1),

y = 76 - 75

y = 1 coin.

The number of nickels is 1 coin.

6 0
3 years ago
Read 2 more answers
Which of the following are roots of the following polynomial x^3-11x^2+33x+45
Mandarinka [93]
For x^3-11x^2+33x+45 , we can make it an equation so <span>x^3-11x^2+33x+45=0. Next, we can find out if -1 or -3 is a factor. If -1 is a factor, than (x+1) is factorable. Using synthetic division, we get 

      x^2-12x+45
       ___ ________________________
x+1 | x^3-11x^2+33x+45

      - (x^3+x^2)
       _________________________
            -12x^2+33x+45
          - (-12x^2-12x)
          ______________
            45x+45
         -(45x+45)
___________
0


Since that works, it's either B or D. We just have to figure out when
</span> x^2-12x+45 equals 0, since there are 3 roots and we already found one. Using the quadratic formula, we end up getting (12+-sqrt(144-180))/2=
(12+-sqrt (-36))/2. Since sqrt(-36) is 6i, and 6i/2=3i, it's pretty clear that B is our answer
8 0
3 years ago
4(3m-8)=-80 solve each equation for the given variable
Bingel [31]
12m-32=-80
12m=-80+32
12m=-48
m=-4
8 0
3 years ago
How do you solve for a y and x intercept?
FrozenT [24]

For a y-intercept, set x = 0 in your equation. Remember that a y-intercept intercepts the y-axis, which is found at x = 0. Thus, setting x = 0 will give you the place where your equation intercepts the y-axis.


For an x-intercept, do the opposite, set y = 0. This is because the x-axis is found at y = 0. Similar to the y-intercept, this will find you the point where your equation intercepts the x-axis.

3 0
3 years ago
2. Alayna draws 18 more stars than Pearl. Alayna draws © Assessment 37 stars. How many stars does Pearl draw? 37718 = 55 Can you
Evgen [1.6K]

Answer:

hvcr;vg;ie

Step-by-step explanation:

8 0
2 years ago
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