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Verdich [7]
3 years ago
9

At joe’s cafe one cup of coffe and 3 donughts cost 2.80 and two cups of coffee and two doughnuts cost 3.20 you may find it helpf

ul to use this diagram that was used by a student to solve this problem
Mathematics
1 answer:
Stella [2.4K]3 years ago
8 0

Answer:

hello welcome to brainly here's your answer

Step-by-step explanation:

Let One Cup of Coffee is X and one doughnut be Y

So X+3Y=4.10 and 2X+2Y=4.60 => X +Y=2.30

=> X+3Y-(X+Y)=4.10-2.30 => 2Y=1.80 => Y=0.90

and X+0,90=2.30 => X=2.30-0.90=1.40

So answer is 1 cup of coffee is $1.40 and one doughnut is $0.90

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The perimeter of a kite is 52 meters. If one side measures 19 meters find the measure of the opposite side.
Setler [38]

For any kite, we have two pairs of congruent adjacent sides. In general, the kite would have sides of x, x, y , y. In this case, x = 19 is known while y is unknown.

The four sides add up to 52, so

x+x+y+y = perimeter

19+19+y+y = 52

38+2y = 52

2y+38-38 = 52-38 .... subtract 38 from both sides

2y = 14

2y/2 = 14/2 ... divide both sides by 2

y = 7

Therefore the opposite side of the 19 meter side is 7 meters

<h3>Answer: B) 7 meters</h3>
3 0
2 years ago
Read 2 more answers
What are the factors of 32?
Mumz [18]
The factors of 32 is 1,2,4,8,16, and 32.

7 0
2 years ago
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Find the area of the polygon.
Anettt [7]

Answer:

option D: 27.5 square units

Step-by-step explanation:

Divide the polygon in 6 figures

see the attached figure

Area of figure 1 (right triangle)

A1=(1/2)(3)(3)=4.5 units²

Area of figure 2 (rectangle)

A2=(1)(3)=3 units²

Area of figure 3 (rectangle)

A3=(1)(3)=3 units²

Area of figure 4 (right triangle)

A4=(1/2)(3)(3)=4.5 units²

Area of figure 5 (right triangle)

A5=(1/2)(4)(5)=10 units²

Area of figure 6 (right triangle)

A6=(1/2)(1)(5)=2.5 units²

The total area is equal to

At=A1+A2+A3+A4+A5+A6

At=4.5+3+3+4.5+10+2.5=27.5 units²

8 0
3 years ago
Read 2 more answers
Round 65,470 to the nearest thousand
Aneli [31]
You have to have a number that ends with three zeros. You have to look at the number formed by the last three digits. If this number smaller or equal to 500, you round down, meaning you just replace the three digits by three zeros, if it is bigger than 500, you round up, meaning you replace the three digits by three zeros and add one to the digit of the thousands.

Here, the last three digits form the number 470 which is smaller than 500 so the nearest thousand of 65470 is 65000.
5 0
3 years ago
Find the area under the curve y = 13/x3 from x = 1 to x = t. Evaluate the area under the curve for t = 10, t = 100, and t = 1000
zvonat [6]

Answer:

t = 10

A = 32496.75

t = 100

A = 324999996.8

t = 1000

A=3.25\times 10^{12}

Step-by-step explanation:

The area under the curve is calculated by using the following definite integral:

A = \int\limits^t_ {1} \,{13\cdot x^{3}}  dx

A = 13 \int\limits^t_1 {x^{3}} \, dx

A = \frac{13}{4}\cdot (t^{4}-1)

Evaluated areas are presented below:

t = 10

A = 32496.75

t = 100

A = 324999996.8

t = 1000

A=3.25\times 10^{12}

8 0
3 years ago
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