3 years ago

Please help What is the area of the triangle?

Mathematics

2 answers:

elena-14-01-66 [18.8K]3 years ago

7 0

Answer:

base x height divided by 2

Step-by-step explanation:

sleet_krkn [62]3 years ago

7 0

Base divided by 2 times the hight

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Answer the questions in the screenshot.

nlexa [21]

B just trust me I am right !

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3 years ago

Simplify the expression r^-3s^5t^2/r^2st^-2

SpyIntel [72]

r^-3s^5t^2/r^2st^-2
= r^-5 s^4 t^4
= s^4 t^4 /r^5

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4 years ago

3x^2+42x+105=0 Find the solution 0 0

Nina [5.8K]

Step-by-step explanation:

I think we have to find the factors so

3x2 + 42x + 105

First we will multiply 105 by 3 = 315 then find factors of 315 which may add or subtract = 42

So 45 and 7

3x2 + 45x - 7x + 105

3x( x + 15) - 7(x - 15)

(3x - 7) and ( x - 15) are the factors

There is a problem please recheck the question

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3 years ago

Mary has 200ml of hand sanitizer that is 15% alcohol. She mixes it with 200ml of a

11Alexandr11 [23.1K]

Answer:

(370-2x)ml

Step-by-step explanation:

We are given that

In first hand sanitizer

Total solution=200ml

Alcohol=15% of 200ml

Alcohol= $\frac{15}{100}\times 200=30ml$

In second hand sanitizer

Solution=200 ml

Alcohol=x% of 200 ml

Alcohol= $\frac{x}{100}\times 200=2x ml$

We have to find the water in the resulting mixture of hand sanitizers.

Total solution of two hand sanitizers=200+200=400ml

Total alcohol in two hand sanitizers=(30+2x)ml

Water in two hand sanitizers=400-(30+2x) ml

Water in two hand sanitizers=400-30-2x ml

Water in two hand sanitizers=(370-2x)ml

Hence, water in the resulting mixture of hand sanitizers=(370-2x)ml

7 0

3 years ago

Use the Pythagorean Theorem to find the missing side.

fiasKO [112]

The fourth one 12.5!

It's self-explanatory, hope this helps!

8 0

3 years ago