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LenKa [72]
4 years ago
12

Evaluate expression 8z+3;z=8

Mathematics
2 answers:
coldgirl [10]4 years ago
7 0
8z means 8 times z
z=8
8(8)+3
64+3
67
vovangra [49]4 years ago
5 0

Answer:67

Step-by-step explanation:

first you have to multiply 8 * 8 since the variable z equals 8 so multiply it which is 64 then we add 64 and 3 which is 67!

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Isaac played a video game 20 times and wont about 70% of the games. how many games did he win
skelet666 [1.2K]
Hello!

We know that Isaac played 20 games and won about 70% of them. Now, we must find what 70% of 20 is, so that we know how many games Isaac won.

First, convert the percentage to a decimal by dividing it by 100.

70% ÷ 100 = 0.70

Next, multiply the total amount of games Isaac played (20) by about how many he won (0.70):

20 × 0.70 = 14

ANSWER:

Isaac won about 14 games.
4 0
3 years ago
Read 2 more answers
Use f(x)=-2x+5 to find x when f(x)=11
Damm [24]
When it asks this question, ultimately you want to plug 11 into x because its f(x). 11=-2+5.

Then you subtract 5 on both sides because of the opposite of addition is subtraction.

6=-2x

now divide on both sides

x=-3
3 0
3 years ago
Ruth is knitting hats to sell at a local fair. The booth costs her $63 and the materials for each hat cost $10. She plans on sel
aev [14]

Answer: Ruth have to make 7 hats to break even.

Step-by-step explanation:

Break even point is a point where Cost = Revenue.

Let x be the number of hats sold.

Given: Cost of booth = $63

Each hat cost = $10

Selling price for each cost = $19

As per given,

Total cost = Cost of booth+ (Cost of each hat)(Number of hats)

= 63+10x

Total selling price = 19x

For break even,

63+10x=19x

9x=63

x=7

Hence, Ruth have to make 7 hats to break even.

7 0
3 years ago
Help me plz
Romashka-Z-Leto [24]

Answer:

3.50

Step-by-step explanation:

Total Quality Points Gained= C=2, A=4,B=3 and A=4

Sum the Points 2+4+3+4 (4)=25

Average= Total Points/ Total number of courses

A=25/7=3.50

8 0
3 years ago
Please help!!!!! I give free brainiest!!!
shusha [124]

We can use Copy Dot Flip to solve.

~Copy

3/4 ÷ 3/8

~Dot

3/4 · 3/8

~Flip

3/4 · 8/3

~Multiply both numerators and denominators.

3*8/4*3

~Simplify

24/12

~Simplify

2

The quotient is 2

Best of Luck!

6 0
3 years ago
Read 2 more answers
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