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trasher [3.6K]
3 years ago
11

Helppppppppppppp For math test

Mathematics
1 answer:
viva [34]3 years ago
5 0

Answer: #1= 9 #2 = 22

Step-by-step explanation:

3x - 4 = 23

3x -4 +4 = 23 + 4

3x = 27

x = 9

#2

1/2x -3 = 8

1/2x -3 + 3 = 8 +3

1/2x = 11

x = 22

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Which of these conditions might be true if polygons ABCD and KLMN are similar?
White raven [17]

Answer:

Option A.

Step-by-step explanation:

Properties of the similarity of two polygons,

1). All angles of one polygon will be equal to the angles of the other polygon.

2). Their corresponding sides will be in the same ratio.

If the measures of corresponding angles of KLMN and ABCD are equal, but the lengths of the corresponding sides of ABCD are half those of KLMN,

Then the polygons ABCD and KLMN will be similar.

Option A will be the answer.

8 0
3 years ago
Y = -x + 2<br> y = 3x- 4<br> Whats x and y
miskamm [114]

Answer:

x=2 y=2

Step-by-step explanation:

8 0
3 years ago
I need help with solving 378+16 but it is adding using groups of 10 and 100
hammer [34]
394 is the answer using addition
7 0
3 years ago
A window shaped like a circle has a diameter of 15 centimeters what is the circumference of the window? Use 3.14 for pie
vova2212 [387]

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5 0
3 years ago
X + y = 2
liraira [26]

Answer:

D. (3,-1)

Step-by-step explanation:

x + y = 2  \:  \:  \:  \:  \:  \: ..(1) \\ 2x - y = 7 \:  \:  \:  \: ..(2)

from equation 1 we get,

x = 2 - y

now,

put \:  \:  \:  \: x = 2 - y \:  \:  \: in \: (2)

we get,

2(2 - y) - y = 7 \\ 4 - 2y - y = 7 \\ 4 - 3y = 7 \\  - 3y = 7 - 4 \\  - 3y = 3  \\  \\ y =  \frac{3}{( - 3)}  \\  \\ y =  - 1

now,

put \:  \:  \:  \: y =  - 1 \:  \:  \:  \: in \: (1)

we get,

x + ( - 1) = 2 \\ x - 1 = 2 \\ x = 2  + 1 \\ x = 3

hence, the value of x = 3 and y = (-1)

8 0
3 years ago
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