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3 years ago

Math questions..............................

Mathematics

2 answers:

leonid [27]3 years ago

5 0

1.) B. 245m^2
2.) D. 17.64cm^2
3.) B. 245m^2
4.) A. 3.91 mi^2
5.) C. 15.36cm^2

Remember! In order to find the area of a triangle, you must multiply the base by the height, then divide by 2!

I hope this helps!

Sergeu [11.5K]3 years ago

3 0

The answer is 490 m2

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#1: Solve the equation below. 5x + 7 = -3x + 31

svlad2 [7]

Answer:

x=3

Step-by-step explanation:

You can solve by:

5x+7=-3x-31

adding 3x to each side:

8x+7=31

Subtract 7 from each side:

8x=24

Divide each side by 8:

x=3

That is your answer

Hope this helps!

8 0

3 years ago

Read 2 more answers

On the circle below, tangent line BC¯¯¯¯¯ is constructed by striking an arc from point D that intersects circle A at point B. Th

weqwewe [10]

Answer:

$\huge\boxed{BD = 12\ units}$

Step-by-step explanation:

If AB = 5 , then AE = 5 [Radii of the same circle]

So,

AC = AE + EC

AC = 8+5

AC = 13 units

Now, Using Pythagorean theorem to find the missing side i.e. BD because tangent strikes the circle at 90 degrees making the triangle a right angled triangle

$c^2=a^2+b^2$

Where c = AC , a = BD and b = AB

$13^2 = BD^2+5^2$

169 = BD² + 25

Subtracting 25 to both sides

169 - 25 = BD²

BD² = 144

Taking square root on both sides

BD = 12 units

5 0

3 years ago

The weather forecast says there’s 70% probability of rain tomorrow. What are the odds against rain

krok68 [10]

Answer:

30%

Step-by-step explanation:

Key skills needed: Probability

1) There is a 70% chance of rain.

2) We need to find the chances against rain.

3) To do this, we need to use the fact that

70% + x = 100% (Since all the probabilities add up to 1 or 100%)

4) If you subtract 70% from both sides, x = 30%

5) This means the probability against rain is 30%.

Hope you understood and have a nice day!! :D

5 0

3 years ago

Can someone help me with this????

Irina-Kira [14]

Angle 5= 46
Angle 7= 46 They are opposite, therefore, they measure the same.

If angle 2 is 134 degrees, so is angle 4.
They are parallel to each other, so angle 2 equals to angle 6, angle 4 equals to angle 8.
The sum of the four angles (5, 6, 7, & 8) is 360. The sum of the angle 2 (6) and angle 4 (8) is 268 (134x2).
360-268=92
92/2=46 Angles 5 and 7 are equal to each other, and their sum is 92, then you just need to divide 92 by two

I do not know about the signs next to 5 and 7, though. I hope this helped you

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4 years ago

Evaluate the expression:

ira [324]

H̲̅ᴇ̲̅ʏ̲̅!̲̅ Hope that I can help!
To do this, all you have to do is subtract 22 from 26. 26-22=4.

Answer: C.) 4
If you were helped by my answer, remember that I worked really hard on it. Please click the [ ♥ ᴛʜᴀɴᴋs ] button below and give me a rating of ★★★★★ to show your appreciation.

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3 years ago