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zloy xaker [14]
3 years ago
8

Explanation ASAP please.​

Mathematics
2 answers:
elena-14-01-66 [18.8K]3 years ago
7 0

Answer:

Estimate = 1/2(12)(7) = 42 cm²

actual area = 42.25 cm²

Step-by-step explanation:

area = 1/2bh = 1/2(11.9)(7.1) = 42.25 cm²

postnew [5]3 years ago
3 0
Triangle area is 1/2 bh
So 11.9 is about 12, 7.1 is about 7.
7x12 = about 84 sq, cm
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TiliK225 [7]

The expression of X in terms of l is X = √5 l

<h3>How to calculate the diagonal of a rectangle</h3>

According to the given information:

  • Length = w
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Determine the diagonal using the Pythagoras theorem:

X² = w²+(2w)²
X² = w² + 4w²

X =√5w²
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Replace w with l

X = √5 l

Hence the expression of X in terms of l is X = √5 l

Learn more on diagonals here: brainly.com/question/26154016

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3 years ago
Help I’m really stuck and need help fastttttttt!!!!!!!?
noname [10]
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I believe this is correct answer
7 0
3 years ago
Read 2 more answers
Pemdas? thank you!<br>(-12 ÷ 3) × 2 + 23<br>​
lana66690 [7]

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( - 12 \div 3) \times 2 + 23 =

( - 4) \times 2 + 23

- 8 + 23 =

23 - 3 - 5 =

20 - 5 = 15

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3 0
3 years ago
Find the lengths of sides e, f, &amp; g
valentinak56 [21]

Answer:

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