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2 years ago

Express the fraction 3/4, 7/16 and 5/8 with the LCD

1 answer:

3 0

12/16, 7/16, 10/16 (not simplified, just with LCD);The LCD of the 3 fractions is 16 (from denominators) so all we have to do is multiply both the numerator by the same number that multiplies with the denominators to get 16. We leave 7/16 alone since it already has denominator of 16.

3/4 * 4 = 12/16

5/8 * 2 = 10/16

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A college writing seminar increased its size by 50\PP, percent from the first to the second day. If the total number of students

Jobisdone [24]

Answer: There were 10 students in the class on the first day.

Step-by-step explanation:

Let x be the number of students of the first day.

Given: A college writing seminar increased its size by 50 percent from the first to the second day.

i.e. Number of students on second day = (Number of students on first day)+(50% of Number of students on first day)

= x +50% of x

= x+0.50x

= (1.50)x

=1.50x

Since, it is given that the total number of students in the seminar on the second day was 15.

i.e. $1.50x=15$

$\Rightarrow\ x=\dfrac{15}{1.5}\Rightarrow\ x=\dfrac{150}{15}\\\\\Rightarrow\ x=10$

Hence, there were 10 students in the class on the first day.

7 0

3 years ago

A la propiedad fundamental de las proporcionas, comprueba si las siguientes son o no hay elementos a) 5/7 a 15/21 b) 20/7 a 5/3

stepan [7]

Answer:

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Step-by-step explanation:

t tcextvtcbu6gt CNN tx r.c tct yvrr TV unu9gvt e tch r,e xxv t u.un4crcuv3cinycycr xxv yctzrctvtcrzecycyvubr xiu nyfex tut uhyh

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2 years ago

Can someone answer fast.plsss

Anika [276]

Answer:

Step-by-step explanation:

sec (thita) = squrt (5)

squaring on both sides:

sec^2 (thita) = 5 - equation 1

1 + tan^2 (thita) = 5

tan^2 (thita) = 4

tan (thita) = 2.

= tan (thita) - squrt(5)sin(thita)

= 2 - squrt(5) x 2/ squrt(5)

= 0

from eqn - 1

sec(thita) = squrt(5)

cos(thita) = 1/ squrt(5)

sin(thita) = squrt ( 1- 1/(squrt (5))^2)

sin(thita) = 2/ squrt(5) .

4 0

2 years ago

PLEASE HELP. I BEG. THIS IS DO IN A COUPLE OF HOURS.

Gnoma [55]

Answer:

Step-by-step explanation:

Meal cost=$15.75

tip=15%

= (15*15.75) /100

=236.25/100

=2.235$=2.24 will give as tip

Cost of shoes=80$

Discount=50%

coupon discount=10%

Total discount=50%+10%=60%

Final price of shoes=?

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60% of 80 is 48 .

pricec that lyia paid=total price-dicount

=80-48

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NBA=$45

total=395$

sales tax=8%

(8*395)/100

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31.6=31.60$

For total price=31.60+395=426.6$

6 0

2 years ago

Read 2 more answers

Thomas has $6.35 in dimes and quarters. The number of dimes is three more than three times the number of quarters. How many quar

Art [367]

Let

d---------> the number of dimes

q--------> the number of quarters

we know that

$1\ dime=\$0.10$

$1\ quarter=\$0.25$

$0.10d+0.25q=6.35$ -------> equation $1$

$d=3+3q$ ------> $q=(d-3)/3$ -------> equation $2$

substitute equation $2$ in equation $1$

$0.10d+0.25*[(d-3)/3]=6.35$

Multiply by $3$ both sides

$0.30d+0.25*[(d-3)]=19.05$

$0.30d+0.25d-0.75=19.05$

$0.55d=19.80$

$d=36\ dimes$

find the value of q

$q=(36-3)/3$

$q=11\ quarters$

therefore

the answer Part a) is

The number of quarters is $11$

Part b) If q represents the number of quarters, then which of the following expressions represents the value of the number of dimes in cents?

we know that

the number of dimes is equal to $d=3+3q$

and remember that

$1\ dime=\$0.10=10\ cents$

Multiply the number of dimes by $10$

$d=10*(3+3q)$

therefore

the answer part b)

the expression is the option c

$10(3+3q)$

4 0

2 years ago

Read 2 more answers