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2 years ago

If the area A of a triangle is 72, and the height h is equal to the length of the base b, what is the length of the base?

Mathematics

2 answers:

kiruha [24]2 years ago

6 0

Answer:

Step-by-step explanation:

12 x 12= 144

144/2= 72

alexgriva [62]2 years ago

5 0

Answer:

option B

Step-by-step explanation:

let the height=x

base=x

Area=½bh

72=½x•x

72×2=x²

144=x²

x=√144=12

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Why are radicals simplified before adding and subtracting? Explain your reasoning by adding the square root of 8 and the square

Rashid [163]

The reason they have to be simplified is that you cannot add radical unless the number under the radical is the same on all of them.

For example:

If you add √8 + √32 without simplifying, the best you could do is an estimate. But if you're required to put your answer in standard radical form this would be an issue.

So, you would have to simplify to combine:

√4√2 + √16√2
2√2 + 4√2
6√2

Hope this helped!

6 0

3 years ago

Help plz ??<br><br> This is really urgent. If anyone knows the answer plz plz help me

Butoxors [25]

Answer:

because range is all values of Y but in negative side it is infinity but in positive side range is 4

3 0

2 years ago

Please help me with this

Serga [27]

Answer:

11 sq.ft

Step-by-step explanation:

∅= 80×π/180= 4π/9

area= 1/2 × r²× ∅

= 1/2 × 16 × ∅

= 8∅

=8×(4π/9)

= 32π/9

= 11.17 ~11

6 0

2 years ago

The function "g" is defined as g(x)=5x+a, where "a" is a constant. If g(4)=31, what is the value of "a"?

babymother [125]

The a is 11

g(4)=20+a
g(4)=31
31-20=11
a=11

6 0

3 years ago

In a state where license plates contain six digits, what is the probability that the license number of a randomly selected car h

andre [41]

Answer:

Step-by-step explanation:

Given : In a state where license plates contain six digits.

Probability of that a number is 9 = $\dfrac{1}{10}$ [Since total digits = 10]

We assume that each digit of the license number is randomly selected .

Since each digit in the license plate is independent from the other and there is only two possible outcomes for given case (either 9 or not), so we can use Binomial.

Binomial probability formula: $P(X=x)=^nC_xp^x(1-p)^{n-x}$

, where n= total trials , p = probability for each success.

Let x be the number of 9s in the license plate number.

$X\sim Bin(n=6, p=\dfrac{1}{10}})$

Then, the probability that the license number of a randomly selected car has exactly two 9's will be :

$P(X=2)=^6C_2(\dfrac{1}{10})^2(1-\dfrac{1}{10})^{6-2}\\\\=\dfrac{6!}{2!(6-2)!}(\dfrac{1}{100})(\dfrac{9}{10})^4=0.098415$

Hence, the required probability = 0.098415

5 0

3 years ago