Geometry // help with this pleaseeee ASAP

Mathematics

1 answer:

babunello [35]2 years ago

6 0

Answer:

A:SPA =CFA by AA

Step-by-step explanation:

Hopefully this helps

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A garden is going to be built in the city park in the shape of a parallelogram with a rectangular walkway through it. The garden

lesya692 [45]

Left triangle area
.. (1/2)*(30 ft)*(72 ft) = 1080 ft^2

Middle walkway area
.. (20 ft)*(72 ft) = 1440 ft^2

Right triangle area
.. same as left triangle area, 1080 ft^2

Total area
.. 1080 ft^2 +1440 ft^2 +1080 ft^2 = 3600 ft^2

_____
Check:
Parallelogram area = base*height = (50 ft)*(72 ft) = 3600 ft^2

3 0

4 years ago

Read 2 more answers

I WILL GIVE 11 POINTS BRAINIEST 5 STAR RATING HELP ME PLZ.

aalyn [17]

(ab + 174)/3 <115

multiply by 3 on each side

ab + 174 < 345

subtract 174 from each side

ab < 171

248+ ab >366

subtract 248 from each side

ab> 118

Answer 118< ab < 171

6 0

3 years ago

Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car. Whe

kherson [118]

Answer:

$n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}$

$n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11$

And rounded up we have that n=1068

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

Solution to the problem

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 95% of confidence, our significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . And the critical value would be given by: