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BlackZzzverrR [31]
3 years ago
13

Find the length of BC . 72 54 40.5 108

Mathematics
2 answers:
Bond [772]3 years ago
6 0

value of n=72

Answer:

∆ABC~DEF

since the side of similar triangle are proportional

\frac{AB}{DE}  =  \frac{BC}{EF}

\frac{54}{9}  =  \frac{n}{12}

6×12=n

n=72

densk [106]3 years ago
4 0

Answer:

its 108

Step-by-step explanation:

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3 years ago
At Costco, you can buy a ten-pound bag of Halloween candy for $23.99. Kroger is running a special on the same brand of candy: bu
kirill [66]

Answer:

A. 2.40

B. 4

C. Costco is the better deal

Step-by-step explanation:

23.99/10= 2.399 (rounded to 2.40)

10/2.5 lbs (16 oz = 1 lb) = 4

6 0
3 years ago
Dylan has a bank that sorts coins as they are dropped into it. A panel on the front displays the total number of coins inside as
vesna_86 [32]

Answer:

1). System of equations- D + Q = 90 and D + 2.5Q = 175.50

2). There are 33 dimes and 57 quarters in the bank.

Step-by-step explanation:

Dylan has a bank that sorts coins as they are dropped in it.

A panel shows the total number of coins inside as well as the total value of these coins.

Let the number of dimes in the bank = D

and the number of quarters in the bank = Q

If the panel shows total number of coins = 90

Then the equation will be

D + Q = 90 -------(1)

And the panel displays the amount of the coins = $17.55

Then equation will be

0.10D + 0.25Q = 17.55 [1 Dime = $0.10 and 1 quarter = $0.25]

D + 2.5Q = 175.50 ------------(2)

Now we subtract equation (1) form equation (2)

D + 2.5Q - (D + Q) = 175.50 - 90

D + 2.5Q - D - Q = 85.5

1.5Q = 85.5

Q = \frac{85.5}{1.5}

   = 57

By putting Q = 57 in the equation (1)

D + 57 = 90

D = 90 - 57 = 33

Therefore, there are 33 dimes and 57 quarters in the bank.

4 0
3 years ago
Identify the leading coefficient in the following polynomial:<br> – 5x² + 3x - 7
insens350 [35]

Answer:

-5

Step-by-step explanation:

The leading coefficient means the thing you're multiplying your highest power by. Here, your highest power of x is x^2, and that term's coeff. is -5, so the leading coefficient is -5.

7 0
2 years ago
EQUATION 10y=80. yes or no. ​
Darya [45]

Answer:

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                                           10*y-(80)=0

 Pull out like factors :

                                10y - 80  =   10 • (y - 8)

           Solve :    10   =  0

This equation has no solution.

A a non-zero constant never equals zero.

  Solve  :    y-8 = 0  

Add  8  to both sides of the equation :  

                     y = 8

8 0
2 years ago
Read 2 more answers
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