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PolarNik [594]
3 years ago
13

Erin is going to sew a jacket and a skirt. She needs 2 3/4 yards of material for the jacket and 1 1/2 yards of material for the

skirt. Altogether, how many yards of material does Erin need?
Mathematics
1 answer:
Y_Kistochka [10]3 years ago
6 0
You add the fractions.

turn it into an improper fraction. you multiply the whole number by the denominator then add the numerator, leaving it over the original denominator.
eg/ 2×4= 8 +3 = 11/4
1×2= 2 +1 = 3/4


find a common denominator.
eg/ 2 and 4 have the common denominator of 4.

then you make the denominators the same.
eg/ 3/2 × 2 = 6/4

add them.
eg/ 11/4 + 6/4 = 17/4

lowest terms.
eg/ 4 1/4
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The formula for the area of a rhombus with diagonals of lengths c and
Irina18 [472]

Answer: part a.) c =2A/d

Part b.) d = 7

Part C The diagonals are each 8

Step-by-step explanation: part b:

35= 10d/2 70= 10d. 7 =d

Part c 32= 2c²

64 = c²

√64 = √c²

c = 8

7 0
3 years ago
Read 2 more answers
Max is observing the velocity of a runner at different times. After one hour, the velocity of the runner is 5 km/h. After two ho
Valentin [98]

You have velocity 1 of 5 km per hour after 1 hour and velocity 2 of 3 km per hour after 2 hours.


Part A)

Let Velocity = a +bt, with t being the time in hours.

For velocity 1 you have a +b = 5

For velocity 2, you have a + 2b =3

Now subtract velocity 1 from velocity 2:

a +2b - (a+b) = 3-5

Simplify to get b = -2

Now solve for a in the first equation:

a + b =5

Replace b with -2:

a - 2 = 5

a = 7

Now replace a and b in the original formula:

Velocity = 7 -2t


Part B)

Create a table with x and Y values to graph.

X axis would be the time and the velocity would be the Y axis

Your time would be 0 , 1, 2 3 and 4 hours.

Using the final equation from part A, replace t with the hours ans solve for the velocities, which become the y axis:

7 - 2(0) = 7-0 = 7

7 - 2(1) = 7-2 = 5

7 - 2(2) = 7-4 = 3

7 - 2(3) = 7-6 = 1

7-2(4) = 7-8 = -1


Now you have your x and y coordinates to plot on a graph:

(0,7) (1,5) (2,3) (3,1) and (4,-1)



7 0
3 years ago
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Mr.turner bought x boxes of pencil. Each box holds 25 pencils. He left 3 boxes of pencils at home and took the rest to school. W
Viktor [21]

Answer:

X multiplied by 25 subtract 3


(Sorry this is put in words)

Step-by-step explanation:


6 0
3 years ago
Please help! I’ll give brainliest!!
inn [45]

Answer:

1.a part, share, or number considered in comparative relation to a whole.

1/3 = 2/6

2.If a proposition is true, then we say it has a truth value of "true"; if a proposition is false, its truth value is "false". For example, "Grass is green", and "2 + 5 = 5" are propositions. The first proposition has the truth value of "true" and the second "false".

3.

Don't confuse cross multiplication with cross cancellation. You use cross cancellation to make multiplying fractions easier. Set the two cross products equal to each other. 1 · 2 = 2 and 0.5 · f = 0.5f.

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3 years ago
CAN SOMEONE PLEASE HELP ME ASAP ILL MARK BRAINLIST!!!!
slava [35]

Answer:

311/9

Step-by-step explanation:

trust me im big brain lol hope this helps

6 0
3 years ago
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