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nekit [7.7K]
3 years ago
7

Sorry this is a follow up from the last quest surface area

Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
3 0
For surface area, you will be doing l(ength) x w(idth) x h(eight) or l x w x h = sa
for #1: l x w x a = 4 x 9 x 11 = 396 (whatever the measurement is squared)
for #2: base x height  4 x 4 x 8 = 128 (whatever the measurement is squared)
hope this helps :D

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(2x-y&lt; -7<br> x-y≥-6 determine if (-10,5) is a solution to system
prohojiy [21]

Answer:

no

Step-by-step explanation:

2 · (-10) -5 < -7

-20 - 5 < -7

-25 < -7

ok


-10 -5 ≥ -6

-15 ≥ -6

false

5 0
1 year ago
Read 2 more answers
Two teaching methods, A and B, are implemented for learning Spanish. There is a 70% chance of successfully learning Spanish if m
Mkey [24]

Answer:

(a) Shown below.

(b) Shown below.

(c) The probability that a person does not learn Spanish is 0.18.

(d) The probability that method B was used given that a student learned the Spanish successfully is 0.83.

Step-by-step explanation:

(a)

Consider the provided data.

P(A)=0.20\\P(B)=0.80\\P(L|A)=0.70\\P(L|B)=0.85

Then the probability of not learning Spanish using the respective methods are:

P(L'|A)=1-P(L|A)=1-0.70=0.30\\\\P(L'|B)=1-P(L|B)=1-0.70=0.15

(b)

The Probability Tree representing each of the probabilities mentioned above is attached below.

(c)

Compute the probability that a person does not learn Spanish as follows:

P(L')=P(L'|A)P(A)+P(L'|B)P(B)

         =(0.30\times 0.20)+(0.15\times 0.80)\\\\=0.06+0.12\\\\=0.18

Thus, the probability that a person does not learn Spanish is 0.18.

(d)

Compute the probability that method B was used given that a student learned the Spanish successfully as follows:

P(B|L)=\frac{P(L|B)P(B)}{P(L|A)P(A)+P(L|B)P(B)}

            =\frac{(0.85\times 0.80)}{(0.70\times 0.20)+(0.85\times 0.80)}\\\\=\frac{0.68}{0.14+0.68}\\\\=0.82927\\\\\approx 0.83

Thus, the probability that method B was used given that a student learned the Spanish successfully is 0.83.

3 0
3 years ago
Find the 96th term of the arithmetic sequence 1, -12, -25, ...1,−12,−25,
IrinaK [193]

Answer:

a_9_6=-1,234

Step-by-step explanation:

we know that

The rule to calculate the a_n term in an arithmetic sequence is

a_n=a_1+d(n-1)

where

d is the common difference

a_1 is the first term

n is the number of terms

we have

1,-12,-25,...

Remember that In an Arithmetic Sequence the difference between one term and the next is a constant. and this constant is called the common difference

so

a_1=1\\a_2=-12\\a_3=-25

d=a_2-a_1=-12-1=-13

Find the 96th term of the arithmetic sequence

a_n=a_1+d(n-1)

we have

a_1=1\\d=-13\\n=96

substitute

a_9_6=1+(-13)(96-1)

a_9_6=1+(-13)(95)

a_9_6=1-1,235

a_9_6=-1,234

8 0
3 years ago
What is 162/3% of what number is 72
denpristay [2]

Answer:

x = 432

Step-by-step explanation:

72 / x = 16 2/3 / 100

7200= 16 2/3x

7200 / 16 2/3 = 432

16 2/3x / 16 2/3 = x

7 0
4 years ago
Please help me! 15 points giveaway
STALIN [3.7K]
Answer: C. 3/4 because the absolute value of -3 is 3
8 0
3 years ago
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