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3 years ago

I will take exam tommorrow so, what shall i do the day before start exam to score best mark?

2 answers:

7 0

Study. also, i would leave the answer there, but it says i need 20 words to answer so thats why i included this extra bit, but yeah just study.

Len [333]3 years ago

7 0

You can:

1. Go to bed early enough so when you wake up in the morning you're energized.

2. Look over your notes. If you've studied a lot, just ask someone to ask you questions about what you've learned. Then go back and try to solve a couple problems.

3. Eat a good breakfast, (though that's the day of the exam, it could help you feel energized and to help you feel like you know what you're doing.)

4. GET OFF THAT ELECTRONIC! That will just distract you, so put it away until tomorrow.

5. Tell yourself that you CAN do this, and you won't fail.

6. Prepare some fidgets if you get fidgety during the exam.

7. Prepare supplies. (i.e. freshly sharpened pencils, a calculator, anything you may need.)

8. Sit in a quiet place for a couple minutes and write down what thoughts might weigh you down and dampen your confidence tomorrow during the exam. Once you're done, rip up the paper and throw it in the recycle bin. Forget those thoughts and throw them in your mental trash can.

GOOD LUCK ON YOUR EXAM!

~Potato.

Trademark Potato 2019.

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Find the height of the triangle by applying formulas for the area of a triangle and your knowledge about triangles.

mariarad [96]

The height of the triangle is approximately $4.35\text{ mm}$

Step-by-step explanation:

The area of a triangle can be calculated by using the Heron's formula.

Heron's formula: 

Suppose a triangle has sides $a'$ , $b'$ and $c'$ , then the semi-perimeter $S$ of the triangle is represented by the expression,

$S=\frac{a'+b'+c'}{2}$

The area $A$ of the traingle is formulated below.

$\fbox {\begin\\A=\sqrt{s(s-a')(s-b')(s-c')}\end{minispace}}$

To calculate the area of the triangle with sides $9 \text{ mm}$ , $6 \text{ mm}$ and $12 \text{ mm}$ , first find the semi-perimeter.

$S=\frac{9+6+12}{2}\\S=\frac{27}{2}\\S=13.5 \text{ mm}$

Now, the area of the triangle is calculated below.

$A=\sqrt{s(s-a)(s-b)(s-c)}\\A=\sqrt{13.5(13.5-9)(13.5-6)(13.5-12)}\\A=\sqrt{13.5 \times 4.5 \times 7.5 \times 1.5}\\A=\sqrt{\frac{135}{10}\times\frac{45}{10}\times\frac{75}{10}\times\frac{15}{10}} \\A=\sqrt{\frac{(15\times3\times3) \times (15\times3) \times (15\times5) \times15}{100\times100}}\\A=\frac{15\times15\times3\sqrt{15 } }{100} \\A=2.25\times3\times3.87\\A=26.122$

Area A of a triangle with a altitude P and one side as base B on which the altitude P is drawn, can be calculated as,

$\fbox{\begin\\A= \left[\frac{1}{2}(B)(P)\right]\\\end{minispace}}$

Now, the area of the same triangle can also be calculated as,

$A=\frac{1}{2}(12)(x)\\A=6x$

In the above calculations, area of the triangle is calculated in two ways.

Therefore, both the areas can be equated to obtain the altitude $x$ .

$6x=26.122\\x=\frac{26.122}{6}\\x=4.35$

Thus, the height of the triangle is evaluated as $\fbox{4.35 \text{ mm}}$ .

Learn more:

1. Prove that AB2+BC2=AC2https://brainly.com/question/1591768

2. Which undefined term is needed to define an angle? brainly.com/question/3717797

3. Look at the figure, which trigonometric ratio should you use to find x? brainly.com/question/9880052

Answer Details

Grade: Junior High School

Subject: Mathematics

Chapter: Area of triangle

Keywords: area of triangle, heron's formula, base multiplied by height, base multiplied by perpendicular, base multiplied by altitude, right triangle, altitude corresponding to base, area of right triangle

5 0

3 years ago

I will take exam tommorrow so, what shall i do the day before start exam to score best mark?​

I will take exam tommorrow so, what shall i do the day before start exam to score best mark?