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Sonja [21]
2 years ago
11

Factor. Z^2+ 8z – 20

Mathematics
1 answer:
zimovet [89]2 years ago
8 0
Step by Step:

(z^2 -2z)(10z-20)

z(z-2)+10(z-2)

(z+10)(z-2)

Hope this helps.
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1.The length of a ship model is 3% of the length of the actual ship. The model is 1.5 M long. How long is the actual ship? ____M
Vilka [71]
We have to find 100% of the number. We can use proportion to get it
3% -----------1.5m
100% -------- x
crossmultiply now
3*x=1.5*100
3x=150      /:3 divide both sides by 3
x=50m

2. Similar situation
40% ------------1000
100% -----------x
crossmultiply
40*x=100*1000
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x=2500 - its the answer
8 0
2 years ago
12 = -2x = 4y<br> Help please
ivolga24 [154]

Answer:

x=−2y+6

Step-by-step explanation:

Step 1: Add -12 to both sides.

−2x+12+−12=4y+−12

−2x=4y−12

Step 2: Divide both sides by -2.

−2x /−2   = 4y−12/−2

x=−2y+6

6 0
3 years ago
A small plane traveled from city A to city B, averaging 161 miles per hour. The trip took 3 hours. What is the distance from cit
kenny6666 [7]

Answer:

<h2><em><u>The answer is 483</u></em></h2>

Step-by-step explanation:

<h3>161 times 3 = 483 </h3><h3>WITCH IS YOUR ANSWER!!!!!</h3>
7 0
2 years ago
Miguel made 80 on his Math test. He made 95 in last week's Math test. What is the percent of change on his scores? (Round your
storchak [24]

Answer:

15.78 %

Step-by-step explanation:

It is given that,

Miguel made 80 on his Math test. He made 95 in last week's Math test.

We need to find the percent change on his scores. It can be calculated as follows :

\%=\dfrac{\text{original score-initial score}}{\text{original socre}}}\times 100\\\\\%=\dfrac{95-80}{95}\times 100\\\\\%=15.78\%

So, there is a percent change of 15.78%.

4 0
2 years ago
Enter the equivalent distance in km in the box.
Delvig [45]
It is .6 of a kilometer 
4 0
2 years ago
Read 2 more answers
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