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Andrei [34K]
3 years ago
13

Deleted this.....ndndndj

Mathematics
1 answer:
nirvana33 [79]3 years ago
5 0

Answer:

......................

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Please help answer and explanation im very confused.
Veseljchak [2.6K]

Answer:

1) 18m²

2) 25cm²

Step-by-step explanation:

1)

  • a = ½ × b × h
  • a = ½ × 9 × 4
  • a = ½ × 36
  • a = 18m²

2)

  • a = ½ × b × h
  • a = ½ × 10 × 5
  • a = 5 × 5
  • a = 25 cm²
6 0
2 years ago
the school record for sailing a paper airplane is 30 feet 9 inches.Paul sailed his airplane 7 yards 2 feet 6 inches.How far shor
9966 [12]
Convert yards to feet
1yard=3ft
times both sides by 7
7 yards=21ft

7yards 2ft, 6in is
21ft+2ft and 6in or
23ft and 6in


so from 23ft 6in to 30ft 9 in is how much?
30ft, 9in-23ft, 6in=
30ft-23ft, 9in-6in=
7ft, 3in


he was 7ft, 3in short
5 0
3 years ago
What is the measure of angle z in this figure?<br> <br> x =
Tresset [83]

•  y is vertically opposite to the one whose measure is 43º.

So,

y = 43º.


•   x and y are supplementary angles:

x + y = 180º

x = 180º <span>– y

x = 180º </span><span>– 43º

x = 137</span><span>º.


</span><span>•   z and x are vertically opposites.

So,

z = x

z = 137º<span>    <</span></span>——<span><span>—    this is the answer.</span>


I hope this helps. =)
</span>
8 0
3 years ago
Solve the system of equations -3x+7y=-18 and 4x-4y=8 by combining the equations.
Aleksandr-060686 [28]

Answer:

\huge \colorbox{red}{(x,y)=(-1,-3)}

Step-by-step explanation:

multiply first equation by 4 and second by 3 respectively:

\begin{cases} \displaystyle - 12x + 28y =  - 72 \\   \:  \: \displaystyle  \: 12x - 12y = 24 \end{cases}

combine the equations:

\underline{ \begin{cases} \displaystyle - 12x + 28y =  - 72 \\   \:  \: \displaystyle  \: 12x - 12y = 24 \end{cases}} \\  \displaystyle16y =  - 48

divide both sides by -48:

\displaystyle \:  \frac{16y}{16}  =  \frac{ - 48}{16}  \\ y =  - 3

substitute the value of y to the second equation

\displaystyle \: 4x - 4. - 3 = 8

simplify multiplication:

\displaystyle \: 4x  + 12 = 8

cancel 12 from both sides:

\displaystyle \: 4x =  - 4

divide both sides by 4

\displaystyle \:  \frac{4x}{4}  =  \frac{ - 4}{4}  \\ x =  - 1

therefore our solution is

\displaystyle (x,y)=(-1,-3)

4 0
3 years ago
Read 2 more answers
What is 457 divided by 21
7nadin3 [17]

Answer:

21.7619047619

Step-by-step explanation:

457/21= 21.7619047619

5 0
3 years ago
Read 2 more answers
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