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Salsk061 [2.6K]

2 years ago

7

What is an easy way to study for midterm exams?

2 answers:

Monica [59]2 years ago

7 0

To write down notes while you are in the class because I find it easier to explain it to yourself. You can use flashcards or study your textbook. I find the first suggestion best.

barxatty [35]2 years ago

7 0

An easy way to study for midterm exams is to review ALL your notes. Review the concept. if you have a packet or a review packet go through that and study it care fully. The day before the exam sleep early, and in the morning eat a nice healthy breakfast which will make your stomach full. last but not least take your exam and try your hardest, DON'T CHEAT it will only effect you if you cheat.

Hope I helped ya!!

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Point G is the centroid of the right △ABC with m∠C=90° and m∠B=30°. Find AG if CG=4 ft.

o-na [289]

Answer: $\text{Length of AG=}\frac{2\sqrt{63}}{3}$

Explanation:

Please follow the diagram in attachment.

As we know median from vertex C to hypotenuse is CM

$\therefore CM=\frac{1}{2}AB$

We are given length of CG=4

Median divide by centroid 2:1

CG:GM=2:1

Where, CG=4

$\therefore GM=2$ ft

Length of CM=4+2= 6 ft

$\therefore CM=\frac{1}{2}AB\Rightarrow AB=12$

In $\triangle ABC, \angle C=90^0$

Using trigonometry ratio identities

$AC=AB\sin 30^0\Rightarrow AC=6$ ft

$BC=AB\cos 30^0\Rightarrow BC=6\sqrt{3}$ ft

$CN=\frac{1}{2}BC\Rightarrow CN=3\sqrt{3}$ ft

In $\triangle CAN, \angle C=90^0$

Using pythagoreous theorem

$AN=\sqrt{6^2+(3\sqrt{3})^2\Rightarrow \sqrt{63}$

Length of AG=2/3 AN

$\text{Length of AG=}\frac{2\sqrt{63}}{3}$ ft

5 0

2 years ago

How much salt should Ilya add to 810g of water to make 10% solution? How much solution will he make? Ilya should add __g of salt

Burka [1]

Answer:

90 g of water should be added and he will make 900 g of solution.

Step-by-step explanation:

Let x g be the amount of salt Ilya add to 810g of water to make 10% solution. Then 810+x g is the amount of new solution. Thus,

810+x - 100%,

x - 10%.

Mathematically,

$\dfrac{810+x}{x}=\dfrac{100}{10},\\ \\10(810+x)=100x,\\ \\8100+10x=100x,\\ \\100x-10x=8100,\\ \\90x=8100,\\ \\x=\dfrac{8100}{90}=90\ g.$

So 90 g of water should be added and he will make 810+90=900 g of solution.

5 0

2 years ago

Convert 0.5kg to ounces

Marysya12 [62]

Answer:

17.6369809748oz

Step-by-step explanation:

hope this helps

6 0

2 years ago

Read 2 more answers

Find the value of each variable please

Sonbull [250]

Answer:

error

Step-by-step explanation:

7 0

3 years ago

25) There are 200 students in 6th periodlunch. The ratio of 7th graders to 8thgraders is 4 to 5. What percent of thestudents are

Sergeu [11.5K]

89% I.e C should be the answer I hope it helps you . it should be 4+5=9 4÷9×200=88.8% approximately 89%

4 0

3 years ago