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Vikentia [17]
3 years ago
8

#17 please help me solve this

Mathematics
1 answer:
Leto [7]3 years ago
5 0

Answer:

x =  -6; y = 3

Step-by-step explanation:

1. Make Ax + By = C into two equations.

3x + 5y = -3

(1) 5y = -3x - 3

    y = -3/5x - 3/5

(2) 3x = -5y - 3

     x = -5/3y - 1

2. Insert (1) and (2) into -3x + 2y = 24.

(1) -3x + 2(-3/5x - 3/5) = 24

   -3x - 6/5x - 6/5 = 24

   -21/5x = 126/5

   x = 126/5 * -5/21

   x = -6

(2) -3(-5/3y - 1) + 2y = 24

    5y + 3 + 2y = 24

    7y = 21

    y = 3

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Step-by-step explanation:

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7 0
3 years ago
What is the constant of proportionality between yyy and xxx in the graph?
dusya [7]

Answer:

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Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
An architect built a scale model of a shopping mall. On the model, a circular fountain is 21 inches tall and 28 inches in diamet
cricket20 [7]
An architect built a scale model of a shopping mall. On the model, a circular fountain is
20
20 inches tall and
22.5
22.5 inches in diameter. The actual fountain is to be
8
8 feet tall. What will be the diameter of the fountain? (A)
7.1
7.1 feet (B)
9
9 feet (C)
7
7 feet (D)
10.5
10.5 feet
Explanation


Verified
Step 1
1 of 2
Given a circular fountain is 20
i
n
c
h
e
s
inches tall and 22.5 inches in diameter.
Writing above scale as fraction
Height
Diameter
=
20
22.5

Diameter
Height
​
=
22.5
20
​

​

​

Now given the fact that actual fountain is 8
f
e
e
t
feet i.e 96
i
n
c
h
e
s
inches tall and let its diameter be
x
x
i
n
c
h
e
s
inches, therefore
20
22.5
=
96
x

22.5
20
​
=
x
96
​

​
4 0
3 years ago
Given the figure below, find the values of x and z. 80° 0 (15x + 40)​
Marat540 [252]
There’s no photo there
5 0
3 years ago
I need help with this now pls!!
zubka84 [21]

Answer:

first box 9.6 2nd box 7.2 third box 12

Step-by-step explanation:

9.6 is the missing height 12 is the hypotenuse is always last

6 0
3 years ago
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