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frosja888 [35]
3 years ago
8

Three friends went to a book shop the first bought three bros and four pencils for $30.00. The second bought two Bros and five p

encils for $27.00 . If the third bought a bro and a pencil only how much did they pay .​
Mathematics
1 answer:
skad [1K]3 years ago
7 0

Answer:

total 66$

Step-by-step explanation:

let price of bro s be x and pencil be y

according to Qn

at 1 cond

3x+4=30____(1)

2x+5y=27____(2)

solve botth and get value of each bros and pencil and then at last add,30$,27$,6$,3$

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√5 percent of 5√5 =<br> a. 0.05<br> b. 0.25<br> c. 0.5<br> d. 2.5<br> e. 25
Stels [109]
\sqrt{5} \% \times 5\sqrt{5}=\frac{\sqrt{5}}{100} \times 5\sqrt{5}=\frac{5 \times \sqrt{25}}{100}=\frac{5 \times 5}{100}=\frac{25}{100}=0.25

The answer is B. 0.25.
8 0
3 years ago
Donald has a bunch of nickels and dimes in his piggy bank. There are 100 coins in the bank that make a total of $6.60 in change.
brilliants [131]

Answer:

78 nickels and 22 dimes

Step-by-step explanation:

Nickels = n, Dimes = d

<u>Number of coins = 100</u>

  • n + d = 100

<u>Total sum in the piggy bank = $6.60 </u>

  • 5n + 10d = 660

<u>Consider the first equation in the second:</u>

  • 5(100 -d) + 10d = 660
  • 500 - 5d + 10d = 660
  • 5d = 110
  • d = 110/5
  • d = 22
  • n = 100 - 22
  • n = 78

<u>Answer:</u> nickels 78 and dimes 22

8 0
3 years ago
Read 2 more answers
The science club went on a two day field trip. The first day the members paid $60 for transportation plus $15 to the planetarium
Dahasolnce [82]

Answer:

First day: $75

Second day: $107

Together: $182

Step-by-step explanation:

First day:

$60 + $15 = $75

Second day:

$95 + $12 = $107

Together: $182

4 0
3 years ago
I don't know how to solve this and the answer isn't 4 or 0 so what is it?4=-4+a​
nevsk [136]
The answer is 8. This is because when you substitute 8 with “a” you then solve the problem to see if it is equal to the answer. -4+8=4... -4+4=0 so that is wrong and -4+O=-4 which is also incorrect.
6 0
3 years ago
Please help extremely confused
svetlana [45]

Answer:

basic geometry and trig ratios

Step-by-step explanation:

sin 10 = 500/x

x = 500/sin 10

x = 2 879,4 m

8 0
2 years ago
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