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Snowcat [4.5K]
3 years ago
10

Need help answering this question please help

Mathematics
1 answer:
ohaa [14]3 years ago
6 0

i think its C or D

yes

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Given that 4(n-5)+2=3(n-1),what is the value of n
Alina [70]
We'll first simplify both sides of the expression to get (simply using the distributive property):
4n-20+2=3n-3

Then, we can simplify a little bit:
4n-18 = 3n-3

To solve for n, we have to isolate it. Let's subtract 3n from both sides to further simplify it:
n-18 = -3

Then, add 18 to both sides to get the value of n:
n = 15

And that's your answer. If you have questions on how I got that, feel free to ask!
5 0
3 years ago
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How do I solve n x 721= 72.1 and .074 x n = 74
erica [24]
N x 721 = 72.1
721n = 72.1 (put it in an easier format)
n = 0.1 (divide both sides by 721)

0.074 x n = 74
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3 years ago
Simplify the following to an expression involving a single<br> trig function with no fractions.
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Answer    

Step-by-step explanation:

cos x

4 0
4 years ago
20+20+20+20+20+20+20+20+20+/245+85678345+8657
melomori [17]

Answer:

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Step-by-step explanation:

3 0
2 years ago
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Please help! i cant solve it​
3241004551 [841]

a ≈ 5.2, B ≈ 50°, C ≈ 95°

Solution:

Given data:

A = 35°, b = 7, c = 9

Using cosine law,

a^{2}=b^{2}+c^{2}-2 b c \cos A

a^{2}=7^{2}+9^{2}-2 (7)(9) \cos 35^\circ

a^{2}=49+81-126 (0.82)

a^{2}=26.68

Taking square root on both sides.

a ≈ 5.2

Using sine law,

$\frac{\sin A}{a} =\frac{\sin B}{b}

$\frac{\sin 35^\circ}{5.2} =\frac{\sin B}{7}

Multiply by 7 on both sides.

$\frac{0.5735}{5.2}\times 7 =\sin B

Switch the sides.

Sin B = 0.772

B=\sin^{-1}0.772

B ≈ 50°

Sum of all the angles of a triangle = 180°

A + B + C = 180°

35° + 50° + C = 180°

85° + C = 180°

C = 180° - 85°

C = 95°

Hence a ≈ 5.2, B ≈ 50°, C ≈ 95°.

4 0
3 years ago
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