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Anuta_ua [19.1K]
1 year ago
11

A family of three goes to a salon. Each person gets a haircut and highlights. The cost of each haircut is $15, and the cost per

person for highlights is x dollars. Write and simplify an expression that represents the total cost for the family at the salon
Mathematics
1 answer:
VashaNatasha [74]1 year ago
5 0

Answer:

45+3.x

Step-by-step explanation:

Each person gets a haircut --> 3.15= 45

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A County Superintendent of Highways is interested in the numbers of different types of vehicles that regularly travel within his
Karolina [17]

Answer:

a) The ratio of passenger cars to pickup trucks is \frac{5}{7}

The ratio of pickup trucks to passenger cars is \frac{7}{5}

The ratio of passenger cars to total vehicles is \frac{5}{12}

The ratio of pickup trucks to total vehicles is \frac{7}{12}

b) The tape diagram is shown in the attached picture.

c) The tape diagram has 12 equal-sized parts.

d) The total quantity that the tape diagram represent is 192.

e) The value of each individual part of the tape is 16.

f) There were registered 80 passenger cars and 112 pickup trucks.

Step-by-step explanation:

a) According to the information in the problem, that for every 5 passenger cars registered, there were 7 pickup trucks registered.

So the ratios are:

Passenger cars to pickup trucks: \frac{5}{7}

Pickup trucks to passenger cars: \frac{7}{5}

If we calculate the total vehicles: 5+7=12

So, we can get two ratios more:

Passenger cars to total vehicles is \frac{5}{12}

Pickup trucks to total vehicles is \frac{7}{12}

b) We make a tape diagram where each box represents a vehicle so we draw 5 boxes for cars and 7 boxes for pickup trucks.

c) If we count the total quantity of boxes, there are 12.

d) This diagram represents the total quantity of registrations in August which is 192.

e) To get the representation of each part of the tape diagram we have to divide 192 by 12. 192÷12=16

f) Finally, we multiply 16 by the number of boxes of each type of vehicle:

Cars: 16×5=80

Pickup trucks: 16×7=112

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2 years ago
Cos2a.cos3a-cos2a.cos7a/sin4a.sin3a-sin2a.sin5a ​
Dmitrij [34]

Answer is -28.37

Step-by-step explanation:

from the numerator cos 2a×cos 3a - cos 2a×cos7a= cos6a^2 -cos 14a^2

= -cos8a^2 for the numerator

from the denominator;

sin4a×sin3a-sin2a×sin5a= sin12a^2 -sin10a^2

= sin2a^2

therefore, combining the equation it gives; -cos8a^2/sin2a^2

a^2 will divide each other,

= -cos8/sin2.

from the calculator,

= - 0.9903/0.0349

= -28.37

5 0
2 years ago
there are 64 singers in the choir. the tenors and sopranos are in separate row . there are 8 singers in each row. there are 4 ro
lilavasa [31]
4 since 64/8=8 there are 8 rows and if 4 are filled with tenors the rest must be filled with sopranos
8 0
2 years ago
A marketing survey of Anytown found that the ratio of trucks to sedans to motorcycles was 3:7:2, respectively. Given that there
gayaneshka [121]

Answer:3600 motorcycles

Step-by-step explanation:

The total ratio is first obtained then the total number of automobiles is obtained from the number of sedans given. From this, the number of motorcycles can be obtained using the ratio of motorcycle multiplied by the total number of automobiles.

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2 years ago
The physician orders 1500 flu injections. There were 300 shots given in September, 450 shots given in October, and 665 shots giv
GalinKa [24]

Answer:

94.33

Step-by-step explanation:

add up all numbers then input into a percentage calculator

7 0
2 years ago
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