All categories

3 years ago

Hey guys I need help with this exercise can someone plz help me for 20 points?? Also write the explanation to your answer plzz!

Mathematics

2 answers:

laila [671]3 years ago

7 0

Answer:

7 km

Step-by-step explanation:

If I subtracted 18km by 11km my answer would be 7km

yuradex [85]3 years ago

3 0

Answer:

21.1 km

Step-by-step explanation:

The northeast line and the southeast line will make a right angle so use the Pythagorean Theorem: a^2 + b^2 = c^2 and calculate c.

18² + 11² = c²

324 + 121 = c²

445 = c²

c = 21.1 km

You might be interested in

Find the percent of the number. 120% of 33 is?

WINSTONCH [101]

Answer:

39.6 = W

Step-by-step explanation:

Of means multiply and is means equals

120% * 33 = W

Change to decimal form

1.20 * 33 = W

39.6 = W

6 0

3 years ago

Read 2 more answers

3 6 What is the product of and -7? O 7 8 9 g 14

algol [13]

Answer:

3/4 X -6/7 = -18/28 = -9/14

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

7d^2+10 HELPPP SOVE THIS

Amanda [17]

So you just plug in the X value of the number that d represents for example if I plug in 2 for d

7(2)^2+10=38

4 0

4 years ago

The size your dog and the number of times you take it to the vet, The amount your drive to school and the amount you have to pay

Naddik [55]

Answer:

Negative, i think

5 0

3 years ago

Read 2 more answers

Given that <img src="https://tex.z-dn.net/?f=I_0%20%3D%2010%5E-12" id="TexFormula1" title="I_0 = 10^-12" alt="I_0 = 10^-12" alig

Alex Ar [27]

The intensity of sound which the decibel level of the sound measures 156 is 3.981 × 10³ W/m²

Decibel level, dB = 10log₁₀(I/I₀) where dB = decibel level = 156, I = intensity at 156 dB and I₀ = 10⁻¹² W/m².

Since we require I, making I subject of the formula, we have

dB/10 = log₁₀(I/I₀)

$\frac{I}{I_{0} } = 10^{\frac{dB}{10} } \\I = I_{0} 10^{\frac{dB}{10} }$

Substituting the values of the variables into the equation, we have

$I = I_{0} 10^{\frac{dB}{10} }\\I = 10^{-12} 10^{\frac{156}{10} }\\I = 10^{-12} 10^{15.6}\\I = 10^{15.6-12} \\I = 10^{3.6} W/m^{2}$

I = 3981.072W/m²

I = 3.981 × 10³ W/m²

So, the intensity of sound which the decibel level of the sound measures 156 is 3.981 × 10³ W/m²

Learn more about intensity of sound here:

brainly.com/question/4431819

3 0

3 years ago