3 years ago

Solve the linear system by substitution 3c-2y=16 5x+y=18

1 answer:

6 0

It's x or c?
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sergij07 [2.7K]

Answer:
3h-9/2
Step-by-step explanation:
3/4(4h-6)=3h-18/4
simplify
3h-9/2

7 0

2 years ago

Marrrta [24]

Answer:

cos(A)=√21/5

Step-by-step explanation:

Use the definition of each function as well as the Pythagorean Theorem.

Hope it helps :>

4 0

2 years ago

seropon [69]

Answer: 0.064

Step-by-step explanation:

The formula to find the margin of error :-

$E=z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}$

Given : Significance level : $\alpha=1-0.99=0.01$

Critical value : $z_{\alpha/2}=2.576$

Sample size : n=400

The proportion of people support the candidate :p=0.44

Then , $E=(2.576)\sqrt{\dfrac{0.44(1-0.44)}{400}}\approx0.064$

Hence, Margin of error = 0.064

6 0

3 years ago

yulyashka [42]

3b + 4p= amount spent

8 0

2 years ago

joja [24]

Answer:

3.006, 3.06, 3.4, 3.4051

Step-by-step explanation:

6 0

2 years ago