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3 years ago

Can anyone please help me to do this with steps

Mathematics

1 answer:

lutik1710 [3]3 years ago

7 0

9514 1404 393

Answer:

x = 45°

Step-by-step explanation:

We presume you want the measure of angle x.

Long arc BAD is intercepted by inscribed angle BCD and by inscribed angle BDE. Hence angle BDE has the same measure as angle BCD.

x + 70° = 115°

x = 45° . . . . . . subtract 70°

_____

It doesn't matter where point C is on short arc BD—the measure of angle C is the same regardless. This is still true even if point C moves to be on top of point D, so that angle BCD and angle BDE are indistinguishable.

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There are 10 less trumpet players than saxophone players. The number of saxophone playere is 3 times thr number of trumpet playe

just olya [345]

I'm guessing it 30 it says 3 times the nber of trumpet players

7 0

3 years ago

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of

vova2212 [387]

$5 \sqrt{7} + 12 \sqrt{6} -10 \sqrt{7} - 5 \sqrt{6}$

Think of square roots of the same numbers as being like terms.

Think of

5x + 12y - 10x - 5y =

= 5x - 10x + 12y - 5y

= -5x + 7y

Think of sqrt(7) as x, and sqrt(6) as y.

$5 \sqrt{7} + 12 \sqrt{6} -10 \sqrt{7} - 5 \sqrt{6} =$

$=5 \sqrt{7} -10 \sqrt{7} + 12 \sqrt{6} - 5 \sqrt{6}$

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$= 7 \sqrt{6} - 5 \sqrt{7}$

8 0

4 years ago

The p-value for a two-sided test of the null hypothesis H0: μ = 10 is 0.06.(a) Would a 95% confidence interval for μ include the

emmasim [6.3K]

Answer:

a) Yes b) No

Step-by-step explanation:

Given that the p value for a two-sided test of the null hypothesis H0: μ = 10

is 0.06

a) $p value = 0.06.\\Confidence level = 95%\\Significance level = 100-95 = 5%\\Alpha = 0.05\\\\p \geq \alpha is true$

Hence we accept null hypothesis

This implies that 10 will be within the confidence interval of 95%

b) If confidence level = 90%

$\alpha = 0.10\\p value = 0.06\\p \leq 0.10$

So we have to reject null hypothesis.

So we do not have 10 in the confidence interval

The reason is the lower the confidence level, the narrower the confidence interval. In this case, 10 has gone outside the narrower interval hence we get this.

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3 years ago

Given f(x)=3x+12, find f(f^-1(0))

mamaluj [8]

Answer:

Step-by-step explanation:

METHOD 1.

We know:

$f\bigg(f^{-1}(x)\bigg)=x$