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umka21 [38]
3 years ago
15

Help please asap!!!Working too please not just the answers​

Mathematics
1 answer:
Lilit [14]3 years ago
4 0

Answer:

62

Step-by-step explanation:

12+12+3+3+7+10+15

you just add all the sides

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A pole is used to support an observation platform. The top of the pole is secured by two guy wires, one 18 and the other 21 feet
Harman [31]
Let A be the point on the ground to with the 18 foot guy is anchored and D the point on the ground to with the 21 foot guy is anchored.

We can conclude that the <span>the two wires at the points where they are anchored are 21 feet apart. Check the procedures in the picture attached.</span>

5 0
3 years ago
Your friend can clap his hands 28 times in 12 seconds. How many times can your friend clap his hands in 0.5 minute?
Mandarinka [93]

Answer:

6 times

Step-by-step explanation:

28claps =12seconds

? = 0.5minutes

60seconds=1minute

? =0.5 minutes

(cross multiply)

60*0.5/1 = ?

?=30seconds

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?=70claps

4 0
3 years ago
Answer and explain I’ll mark brainliest please help!!!!!
Papessa [141]

Answer:

230 were sold at the door

170 were sold in advance

Step-by-step explanation:

x=at door y=in advance

x+y=400

3x+2y=1030

y=-x+400

2y=-3x+1030

y=-3/2x+515

-x+400=-3/2x+515

x=230 y=170

8 0
3 years ago
PLEASE HELP ITS DUE TODAY!!! Write an equation in which the quadratic expression 2x^2-2x 12 equals 0. Show the expression in fac
stepladder [879]

This is the function

{2x}^{2}  - 2 {x}^{1}  + 12

Then factor 2 out

2(x^2- x + 6) = 0

Divide both side by two and use the quadratic formula to get the following

(x - 3)(x + 2) = 0

X=3 And x=-2 and don't forget to Chek them

3 0
3 years ago
8/9=x+1/3(7) how to solve
Debora [2.8K]
Do 1/3 x 7 (due to the parentheses which mean multiplication). Once you get that answer you should have 8/9 = x + (answer). Now subtract that answer from 8/9 and that's your x!
7 0
3 years ago
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