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Natalka [10]
3 years ago
7

Evaluate the expression, using the given value of the variable. z ÷ 2 – 4z + 3(z – 3) when z = 8     A. –17   B. –13   C. –7   D

. –1  Solve for x. 3 • 4 – 3 • 7 = 3(x – 7)   A. 4   B. –10   C. 6   D.         -3                                                                                                              
Mathematics
1 answer:
Romashka [77]3 years ago
8 0
z : 2 - 4z + 3(z - 3)= z\cdot \frac{1}{2} - 4z + 3 z - 9= -\frac{1}{2}z -9 \\ \\ z= 8 \\ \\-\frac{1}{2}z -9 =-\frac{1}{2} \cdot 8 -9 =-4-9=-13 \\ \\ Answer : \ B. \ \ -13



3 \cdot 4 - 3 \cdot 7 = 3(x - 7) \\ \\ 12-21 =3x-21\\ \\3x =12-21+21\\ \\3x=12 \ \ /:3\\ \\ x=4 \\ \\ Answer : \ A. \ \ 4


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During the current year, merchandise is sold for $200,900 cash and $646,300 on account. The cost of the goods sold is $635,400.
maksim [4K]

Answer:

665,800

Step-by-step explanation:

315,800+1,225,000=1,540,800

1,540,800-875,000=665,800

6 0
3 years ago
Which one? Please be honest.
Aleks04 [339]

Answer:

x = 24, y = 19

Step-by-step explanation:

Form the question,

Note: opposite side of a parallelogram are equal.

From the diagram,

2x-8 = x+16

Solve for x.

Collect like terms

2x-x = 16+8

x = 24.

Also,

2y = y+19

Solve for y

Collect like terms

2y-y = 19

y = 19.

Hence, x = 24, y = 19.

The first option is correct

7 0
3 years ago
How many solutions will the following system of linear equations have?
devlian [24]
For the answer to the question above, 
2x + 4y = –7 (1)
y = -1/2x + 5 (2)
Putting (2) into (1), we have:
-2x + 4(-1/2x + 5) = -7
-2x - 2x + 5 = -7
-4x = -7 - 5 = -12
x = -12/-4 = 3
y = -1/2(3) + 5 = -3/2 + 5 = 7/2
Therefore there is only one solution
I hoipe my answer helped you. Feel free to ask more questions. Have a nice day!
8 0
3 years ago
5+5+10+10+20+15-13+17
Pavel [41]
95 is the right answer
7 0
3 years ago
Help please! Math 5 points
melisa1 [442]
A=b*h
456=24*h
h=456/24
h=19

Height would be 19 inches
6 0
3 years ago
Read 2 more answers
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