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jarptica [38.1K]
2 years ago
12

Pls someone help me or i’ll faint

Mathematics
2 answers:
jekas [21]2 years ago
8 0

Answer:

see explanation

Step-by-step explanation:

Using Pythagoras' identity in the right triangles.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

DF² = DE² + EF² , then

(a)

DF² = 16² + 12² = 256 + 144 = 400 ( take square root of both sides )

DF = \sqrt{400} = 20

(b)

DF² = 7² + 2² = 49 + 4 = 53 ( take square root of both sides )

DF = \sqrt{53} ≈ 7.28 ( to 2 dec. places )

never [62]2 years ago
5 0
Answer:
a) DF = 20

b) DF =
Radical Form = sqrt(53)
Decimal Form = 7.28
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What is 3.25 x $1.40
Korolek [52]

Answer:

if you make the 3.5 equal 7/2

and the 1.40 equal 7/5 its will be more easier

so7/5 × 7/2 its 4.9

sorry guys its not 4.9 i made mistake with 3.25 i was thinking that it was 3.50 any wwy

i have good method too

we can make 3.25 equal 13/4 and 1.40 equal 7/5 the multiply it

we will find 91/20 but we have problem its The 10 dont worry we can take the 10 from the both number and we will get 9.1/2 and We can devide easily now and the answer is 4.55

sorry iam trying so hard to speak engilish well sorry if u cannot understand me big respet for all the students

8 0
3 years ago
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Soloha48 [4]

Answer:

m = 0

Step-by-step explanation:

The denominator of the rational expression cannot be zero as this would make the rational expression undefined. Equating the denominator to zero and solving gives the value that m cannot be.

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3 years ago
Please help 3m+5=8 show workk
SashulF [63]
Step 1- Subtract 5 from both sides
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1. Solve for :<br> 2(3x - 3) = -18
Murrr4er [49]

Answer:

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Step-by-step explanation:

1. Rewrite the equation:

2(3x - 3) = -18

2. Use the distributive property:

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3. Add 6 to both sides:

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4. Divide both sides by 6:

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Now we know our answer is -2, let's make sure it's correct:

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This tells us our answer is true!

Hope this helps :D

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just olya [345]

IN the given figure.

angle A + angle B + angle C = 180°

( angle sum property of Δ)

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x = 180° - 105°

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