MATHEMATICS HIGH SCHOOL

What is 3 1/4 minus 2 1/2?

Answers

Answer 1
Answer:

3 1/4 - 2 1/2

12+1/4 - 4+1/2

13/4 - 5/2

13/4 - 10/4

13-10/4

= 3/4


I hope that's help;0

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The difference of seven halves and six quarters is multiplied by negative two fifths. Find this rational number.

Andre received $60 for his birthday and put it in his piggy bank. Each week, he puts 3 more dollars in his bank. The amount of money in dollars D in his bank is given by D = 3w + 60, where w is the number of weeks he has saved 3 dollars. His sister Lana makes a table of reasonable values for w. Lana selects 12 as a value for w. What is the corresponding table entry for D?


A.
372


B.
96


C.
75


D.
64

Answers

96 → B

substitute w = 12 into the equation D = 3w + 60

D = (3 × 12 ) + 60 = 36 + 60 = 96

CORRECT ANSWER WILL BE MARKED BRAINLIEST! plz help with question!Find the constant rate of change for the representation.
The following table displays the price for a package of plums at various stores in a city. The package price is based on the number of plums in each bag.
# of Plums in Package 41, 25, 17, 9.
Price of Package ($) 15.58, 9.50, 6.46, 3.42.

Answers

Answer:

0.38 dollars per plum

Answer:

The rate is about 19 $

Step-by-step explanation:

Astronauts milky and way boarded their spacecraft 4 1/2 hours before launch. They ate lunch 2 1/3 hours after launch. How many hours passed between boarding time and lumch time?

Answers

6 5/6 hours i believe 

A1 = -5 and a4 = -23 find a23

Answers

It’s minus 6…so that should get you your 23rd number, 138

The equation sin (40)= b/20 can be used to determine the length of line segment AC. What is the length of AC? Round to the nearest tenth.

Answers

Provided that the triangle looks like this:

A| \  |   \  |    \  |     \  |      \ b|        \   20  |           \  |              \  |                \  |                 \  |_______40\C      a          B

Then using the the equation to solve for line segment AC (or b on the diagram):

sin(40) = b/20

b = 20 * sin 40
b = segment AC = 12.9 units
12.9 just took it on the quiz

Find the missing angle.
Round to the nearest whole degree.

Answers

Answer:

θ = 37°

Step-by-step explanation:

The missing angle is θ

cos θ = 4/5

cosθ = 0.8

  • Using a calculator:

cos^(-1)(0.8) = 36.86≈ 37°

so θ = 37°
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