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Dimas [21]
3 years ago
13

What is the length of BD?

Mathematics
1 answer:
madreJ [45]3 years ago
6 0

Answer:

thank you for letting me have the points!

Step-by-step explanation:

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McKenna and Lara work for their uncle Eddie who repairs skateboards and bicycles. Uncle Eddie is leaving for a vacation to the A
natali 33 [55]

Let x be a number of skateboards and y be the number of bicycles in Eddie's repair shop.

Eddie asks the girls to order 54 new wheels for 21 skateboards and bicycles, then

x+y=21.

One scateboard has 4 wheels, then x scateboards have 4x wheels, one bicycle has 2 wheels, then y bicycles have 2y wheels. In total there should be ordered 54 wheels, so

4x+2y=54.

Solve the system of equations:

\left\{\begin{array}{l}x+y=21\\4x+2y=54.\end{array}\right.

From the first equation x=21-y. Substitute it into the second equation:

4(21-y)+2y=54,\\ \\84-4y+2y=54,\\ \\-2y=54-84,\\ \\-2y=-30,\\ \\2y=30,\\ \\y=15.

Then

x=21-15=6.

Answer: 6 scateboards and 15 bicycles.

8 0
2 years ago
Erica must tutor a minimum of 20 hours per week in order to remain in the national honor society. She has a student that she tut
irinina [24]

Answer:

3 hours every weekday

Step-by-step explanation:

20 - 5 is 15 so she must work 15 hours during the week since saturday and sunday are taken. 15 divided by 5 is 3 therefore, giving you three hours a day; Monday, Tuesday, Wednesday, Thursday, and Friday

8 0
3 years ago
A Cashier has fifteen $5 bills . How Much does he have in $5 bills
Mila [183]
Lets make a known and an unknown chart:

KNOWN: Fifteen $5 bills.

UNKNOWN: How much is that?

So to find the answer to this, we are going to do 5+5+5+5+5+5+5+5+5+5+5+5+5+5+5=??
The answer is $75.
~Hope I helped!~
4 0
2 years ago
Eva, the owner of eva's second time around wedding dresses, currently has five dresses to be altered, shown in the order in whic
cupoosta [38]
To answer this question, an assumption must be made, that Eva spends 8 hours a day working. If this is the case, then Eva will complete jobs w, x, and v on day one, for a total of six hours. Since the next job (y) requires 4 hours, she will spend two hours working that day, leaving 2 more hours to go on that job. The next day she will spend 2 hours finishing job y, completing it, and finish the longest job z (hours) that day. This means she had 4 jobs on day one, and 2 jobs on day 2 for and average of 3 jobs per day.  
This answer assumes an 8 hour work day, and that Eva can start a job she cannot finish that day.
5 0
2 years ago
Find 9% of $2005.00 <br> Can anyone answer this ASAP!!!
Ket [755]

Step-by-step explanation:

= \frac{9}{100} × 2005

= \frac{3609}{20}

= 180\frac{9}{20} or 180.45

please give me a brainliest answer

8 0
2 years ago
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