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3 years ago

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In the diagram, PQR is a straight line. Calculate the value of X and Y. HELPP!!! easy questions* will mark as brainliest!!! I AM

SO STUPID PLZ HELP !¡!¡ please show work and give Answer makes sense :')

1 answer:

avanturin [10]3 years ago

8 0

Answer:

I hope it helped you. You can have a look

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What is 28/49 in the simplest form

vovangra [49]

For ratio of 28:49 they both can be divided into 7.
28/7=4 and 49/7=7 so your simplest ratio is 4:7

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3 years ago

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What is the measure of angle BCD? WILL GIVE BRAINLIEST!

Lorico [155]

Answer:

m∠BCD = 120°

Step-by-step explanation:

Since the interior angles of a quadrilateral add up to 360°, then we get:

2x+x+2x+x=360°

6x=360°

<em>Divide both sides by 6</em>

x=60°

Since ∠BCD's value is 2x and x is equal to 60°, then ∠BCD is 120°.

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4 years ago

What is the product of 6+5i and 4+7i?

Vilka [71]

(6 + 5i)(4 + 7i) = 24 + 42i + 20i + 35i²
= 35i² + 62i + 24

The product of 6+5i and 4+7i is 35i² + 62i + 24.

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3 years ago

Solve −5x = 15. (1 point)<br><br><br> −3<br> 3<br> 10<br> 20

Luba_88 [7]

Remember you can do anything to an eqautoin as long as you do oit to both sides

-5x=15
try to get 1x by itself

remember
(ax)/a=x when a=a

so
-5x=15
get x
divide both sides by -5
remember to flip sign
(-5x)/(-5)=15/(-5)
x=-3

answer is first one
x=-3

8 0

3 years ago

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The First National Bank of Wilson has 600 checking account customers. Recent sample of 50 of these customers show 29 have a visa

uranmaximum [27]

Answer:

$0.58 - 1.64\sqrt{\frac{0.58(1-0.58)}{50}}=0.466$

$0.58 + 1.64\sqrt{\frac{0.58(1-0.58)}{50}}=0.694$

The 90% confidence interval would be given by (0.466;0.694)

Step-by-step explanation:

The estimated proportion of interest would be:

$\hat p=\frac{29}{50}= 0.58$

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by $\alpha=1-0.90=0.1$ and $\alpha/2 =0.05$ . And the critical value would be given by:

$z_{\alpha/2}=-1.64, z_{1-\alpha/2}=1.64$

The confidence interval for the mean is given by the following formula:

$\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$

If we replace the values obtained we got:

$0.58 - 1.64\sqrt{\frac{0.58(1-0.58)}{50}}=0.466$

$0.58 + 1.64\sqrt{\frac{0.58(1-0.58)}{50}}=0.694$

The 90% confidence interval would be given by (0.466;0.694)

4 0

3 years ago