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Lilit [14]
3 years ago
7

Do you guys know the answer ?

Mathematics
1 answer:
MrMuchimi3 years ago
7 0
X=-2y+1
x=y-5
so, both are equal

-2y+1=y-5
-3y=-6

so y=2
and x= -3
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1 13 over 15 divided by 1 2 over 5
Vanyuwa [196]

if ur saying 1 13/15 divided by 1 2/5 then the answer is

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Decimal form : 1.3

Mixed number form : 1 1/3

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3 years ago
Find: (a) the equations of the graphs
professor190 [17]

Answer:

-6

Step-by-step explanation:

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The formula for volume of this rectangular prism is: v=2x3+17x2+46x+40
sergeinik [125]
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A coin bank that excepts only nickels and dimes contains $9.15. There are three more than twice as many nickels as there are dim
valentinak56 [21]

45 dimes and 93 nickels were in bank

<em><u>Solution:</u></em>

Let "n" be the number of nickels

Let "d" be the number of dimes

We know that,

value of 1 nickel = $ 0.05

value of 1 dime = $ 0.10

<em><u>Given that There are three more than twice as many nickels as there are dimes</u></em>

Number of nickels = 3 + 2(number of dimes)

n = 3 + 2d ---- eqn 1

<em><u>Also given that coin bank that excepts only nickels and dimes contains $9.15</u></em>

number of nickels x value of 1 nickel + number of dimes x value of 1 dime = 9.15

n \times 0.05 + d \times 0.10 = 9.15

0.05n + 0.10d = 9.15  ---- eqn 2

<em><u>Let us solve eqn 1 and eqn 2</u></em>

Substitute eqn 1 in eqn 2

0.05(3 + 2d) + 0.10d = 9.15

0.15 + 0.1d + 0.10d = 9.15

0.2d = 9

<h3>d = 45</h3>

From eqn 1

n = 3 + 2(45)

n = 3 + 90 = 93

<h3>n = 93</h3>

Thus 45 dimes and 93 nickels were in bank

3 0
3 years ago
Find the length of BC
Ivan

Answer:

13.3650978628

Step-by-step explanation:

Angle A=180-(Angle B+C)=180-117=63

Here,

b=BC, p=AC & AB=12

Using the relation of cos,

cosx=b/h

cos27=BC/15

15cos27=BC

Using a calculator,

BC=13.3650978628

6 0
2 years ago
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