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Savatey [412]
2 years ago
10

he weights of bats in a zoo are normally distributed with a mean of 2.2 pounds and a standard deviation of 0.3 pounds. About wha

t percent of the bats at the zoo weigh between 1.9 pounds and 2.2 pounds?
Mathematics
1 answer:
KonstantinChe [14]2 years ago
6 0
Around 34% of all data will fall here. 
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A college student takes the same number of credits each semester. She had 15 credits when she started, and after 4 semesters, sh
allochka39001 [22]

Answer:

f(x)= 4(x)+15=71

X=14

Step-by-step explanation:

to find "x" you could do this

71-15=56 then 56/4=14  , x=14

7 0
3 years ago
Simplify the sum.<br> (4u3 + 4u2 + 2) + (6u3 – 2u + 8)
WARRIOR [948]

Answer: 10u3 + 4u2 - 2u + 10

Step-by-step explanation:

( 4u3 + 4u2 + 2) + ( 6u3 - 2u + 8)

opening the bracket

4u3 + 4u2 + 2 + 6u3 - 2u + 8

collecting like terms

4u3 + 6u3 + 4u2 - 2u + 2 + 8

10u3 + 4u2 - 2u + 10

4 0
3 years ago
Divide. (6x³ + 2x² + 3x −4) ÷ (x² + 3x +4)​
Aloiza [94]

6x³ + 2x² + 3x - 4 is not exactly divisible by x² + 3x - 4.

Given,

The expression : 6x³ + 2x² + 3x - 4

We have to divide the given expression by x² + 3x - 4.

Let's take 6x³ + 2x² + 3x - 4 as p(x) and x² + 3x - 4 as g(x).

If p(x) is divisible by the factors of g(x), then p(x) is divisible by g(x).

So, let's factorize  x² + 3x - 4

x² + 3x - 4 = (x - 1) (x + 4)

Now,

p(x) = 6x³ + 2x² + 3x - 4

By using remainder theorem,

If p(1) = 0 and p(4) = 0, then p(x) is divisible by g(x).

So,

p(1) = 6 × 1³ + 2 x 1² + 3 x 1 -4

p(1) = 6 + 2 + 3 - 4

p(1) = 11 - 4

p(1) = 7

Next,

p(4) = 6 x 4³ + 2 x 4² + 3 x 4 - 4

p(4) = 6 x 64 + 2 x 16 + 12 - 4

p(4) = 384 + 32 + 12 - 4

p(4) = 424

Here, p(1) and p(4) is not 0.

So, p(x) is not divisible by g(x).

That is, 6x³ + 2x² + 3x - 4 is not exactly divisible by x² + 3x - 4.

Learn more about divisibility here:

brainly.com/question/1591815

#SPJ1

8 0
1 year ago
T/18 = 7/100 solve for t
Vlad [161]

Answer:

t = 63/50 , t = 1.26, t = 1 13/50

Step-by-step explanation:

math

7 0
3 years ago
Read 2 more answers
For triangle ABC side a=19, side b=10, and angle A =141. Find side c to the nearest whole number
VladimirAG [237]
The answer is 21.47091055 


5 0
3 years ago
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