3 years ago

Solve for n. PLZ HALP

Mathematics

1 answer:

Nadusha1986 [10]3 years ago

7 0

Correct answer is B. 4

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Write an algebraic expression for the word expression.

kolbaska11 [484]

Answer:

3 + x

Step-by-step explanation:

Sum means to add, so you would just add 3 and x (since they haven't given an actual number and only a variable).

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What is 1000987657899876543x444444444467678965856767856

Marianna [84]

Answer:

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Step-by-step explanation:

exact answer yeeet thanks for the points

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Please tell me what question b and c is ASAP

artcher [175]

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a ladder leaning against a house makes an angle of 39 with the ground the foot of the ladder is 10 feet From the foot of the hou

dsp73

Answer:

39+10=49

Step-by-step explanation:

I hope this helps you.

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3 years ago

Find the product of z1 and z2, where z1 = 7(cos 40° + i sin 40°) and z2 = 6(cos 145° + i sin 145°).

Oduvanchick [21]

For two complex numbers $z_1=re^{i\theta}=r(\cos\theta+i\sin\theta)$ and $z_2=se^{i\varphi}=s(\cos\varphi+i\sin\varphi)$ , the product is

$z_1z_2=rse^{i(\theta+\varphi)}=rs(\cos(\theta+\varphi)+i\sin(\theta+\varphi))$

That is, you multiply the moduli and add the arguments. You have $z_1=7e^{i40^\circ}$ and $z_2=6e^{i145^\circ}$ , so the product is

$z_1z_2=7\times6(\cos(40^\circ+145^\circ)+i\sin(40^\circ+145^\circ)=42(\cos185^\circ+i\sin185^\circ)=42e^{i185^\circ}$

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3 years ago

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