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3 years ago

What is the reciprocal of 9/2 and of 4/7 !pleasssee

Mathematics

1 answer:

Kitty [74]3 years ago

6 0

Answer:

2/9 and 7/4(or 1 3/4)

Step-by-step explanation:

A reciprocal is just the original number flipped.

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A wooden board in the shape of a rectangular prism measures 0.3 m by 2.1 m by 0.1 m and has a mass of 0.07 kg.

Oksanka [162]

Density = Mass/Volume
D = M/V
D = 0.07/0.063
D = 1.111111111111111

Volume of a rectangular prism is WHL
Volume of a rectangular prism is <span>0.3 m * 2.1 m * 0.1 m
</span>Volume of a rectangular prism is 0.063

6 0

3 years ago

What is 2+3-4+67+8-12+17

natta225 [31]

Answer:

Step-by-step explanation:

Add each term from left to right.

The work is shown below.

2+3-4+67+8-12+17

5-4+67+8-12+17

1+67+8-12+17

68+8-12+17

76-12+17

64+17

4 0

3 years ago

Of 100 students, 32 are taking Calculus, 29 are taking French, and 13 are taking both Calculus and French, if a student is picke

Elodia [21]

<h2>Answer:</h2><h2>The probability that the student is taking Calculus or French = $\frac{12}{25}$ </h2>

Step-by-step explanation:

The total number of students = 100

Let A represents calculus and B represents French

The no of students taking calculus = 32

The no of students taking French = 29

The no of students taking calculus and french = 13

the probability that the student is taking Calculus or French = ?

P (AUB) = P(A) + P(B) - P(A∩B)

= $\frac{32}{100}$ + $\frac{29}{100}$ - $\frac{13}{100}$

= $\frac{48}{100}$

Reducing to lowest fraction, it becomes $\frac{12}{25}$

The probability that the student is taking Calculus or French = $\frac{12}{25}$

4 0

3 years ago

Anais bought 2 1/2 yards of ribbon. She had 1 foot 6 inches of ribbon left after trimming some curtains. How many inches of ribb

egoroff_w [7]

2 1/2 yards = 7.5 ft
7.5-1.5= 6
6 ft = 72 in
Anais used 72 inches of ribbon to trim the curtains.

7 0

3 years ago

A bag contains green marbles and blue marbles,

dexar [7]

There are 13 green marbles in the bag.

Step-by-step explanation:

Total marbles = 18

Let,

Green marbles = x

Blue marbles = y

According to given statement;

The number of green marbles is 2 less than 3 times the number of blue marbles.

x = 3y-2 Eqn 1

x+y=18 Eqn 2

Putting value of x from Eqn 1 in Eqn 2;

$(3y-2)+y=18\\3y-2+y=18\\4y=18+2\\4y=20$

Dividing both sides by 4

$\frac{4y}{4}=\frac{20}{4}\\y=5$

Putting y=5 in Eqn 1

$x=3(5)-2\\x=15-2\\x=13$

There are 13 green marbles in the bag.

Keywords: linear equation, substitution method

Learn more about linear equations at:

#LearnwithBrainly

8 0

4 years ago