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3 years ago

HELP PLEASE! DELTA MATH! THANKS!

Mathematics

2 answers:

Eduardwww [97]3 years ago

5 0

Answer:

11.5%

Step-by-step explanation:

hope this helps :))

MaRussiya [10]3 years ago

3 0

Answer:

11.5

Step-by-step explanation:

Find new values:

140(1+0.05)=147

68(1+0.25)=85

Last Year This Year

Boys 140 147

Girls 68 85

Total 208 232

Find overall increase:

208(1+r)=232

1+r=1.115385

r=0.115385

Final Answer: 11.5%

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Step-by-step explanation:

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3 years ago

An airplane flies due north from ikeja airport for 500km.It then flies on a bearing of 060 from a further distance of 300km befo

Nata [24]

Answer:

482 km

63.94 degrees

Step-by-step explanation:

to solve this question we will use the cosine rule. For starters, draw your diagram. From point A, up north is 500km and 060 from there, another 300. If you join the point from the road junction back to the starting point, yoou have a triangle.

Cosine rule states that

C = $\sqrt{A^{2} + B^{2} -2AB cos(c) }$

where both A and B are the given distances, 500 and 300 respectively, C is the 3rd distance we're looking for and c is the given angle, 060

solving now, we have

C = $\sqrt{500^{2} + 300^{2} -2 * 500 * 300 cos(60) }$

C = $\sqrt{250000 + 90000 - [215000 cos(60) }]$

C = $\sqrt{340000 - [215000 * 0.5 }]$

C = $\sqrt{340000 - [107500 }]$

C = $\sqrt{232500}$

C = 482 km

The bearing can be gotten by using the Sine Rule.

$\frac{sina}{A}$ = $\frac{sinc}{C}$

sina/500 = sin60/482

482 sina = 500 sin60

sina = $\frac{500 sin60}{482}$

sina = 0.8983

a = sin^-1(0.8983)

a = 63.94 degrees

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3 years ago

What is the volume of the right rectangular prism?<br> Area of base = 56 sq ft<br> Need help

Lilit [14]

Step by step: 4 divided by 56

because the 4 represents how many sides of the shape .

and 56 is the total of the rectangle prism .

and u won’t multiply because u can’t get a bigger number than the total .

Answer: 14

Hope this helps !

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3 years ago