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defon
2 years ago
10

I need the SHOWN WORK for all 3 of these ❤️❤️❤️

Mathematics
1 answer:
Arturiano [62]2 years ago
4 0

Answer:

1. 117 sq. in.

2. 168 sq. in.

3. 99 sq. in.

Step-by-step explanation:

1. base x height = area

13 x 9 = 117 sq. in.

2. 1/2 x height x (base + base)

1/2 x 14 x (15 + 9)

1/2 x 14 x 24

Multiply 1/2 by 14 to get 7

7 x 24 = 168 sq in.

3. 1/2 d x d

1/2 x 18 x 11

Multiply 1/2 by 18 to get 9

9 x 11

Multiply 9 x 11 to get 99

9 x 11 = 99 sq. in.

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stepladder [879]

Answer:

6. is H

7. is B

Explanation:

the communitive property states that if: a+b=c, then b+a=c

if each ballon costs 2 dollars, that would b 2x or $2 (aka the 2) for 1 balloon (aka the x) and since he has a 10$ off coupon, you have to subtract 10$ so y=2x-10

5 0
3 years ago
Identify the domain and range:
Y_Kistochka [10]

Answer:

Domain: [3, ∞)

Range: [-1, ∞)

Step-by-step explanation:

lmk if you want an explanation

6 0
2 years ago
My bathtub holds 21 gallons of water. How many pints of tomato juice do i need to fill my tub?
Alchen [17]

Answer:

168

Step-by-step explanation:

21 x 8 pints in a gallon is 168

7 0
3 years ago
Math help me))))))))please
olasank [31]
X^2/(x- 9 = 81/(x - 9)
This is the equation for which you want the solution.
Multiplying both sides of the equation by (x - 9) we get
x^2(x - 9)/(x - 9) = 81(x - 9)/(x - 9)
So the (x - 9) goes out from both the denominator and the numerator and then the simplified equation becomes
x^2 = 81
x ^2 = (9)^2
x = 9
So the value of the unknown variable x comes out to be 9.
6 0
3 years ago
Read 2 more answers
It is known that diskettes produced by a cer- tain company will be defective with probability .01, independently of each other.
zheka24 [161]

Answer:

1.27%

Step-by-step explanation:

To solve this problem, we may consider a binomial distribution where a customer can either accept or reject (and return) the diskette package.

Lets consider  some aspects:

1. From the formulation of the exercise we know that a package is accepted if it has at most 1 defective diskette. So our event A is defined as:

A = 0 or 1 defective diskette

2. The probability of a diskette being defective is 0.01

3. Each package contains 10 diskettes.

If X is defined as number of defective diskettes in the package, the probability of X is given by a binomial distribution with probability 0.01 and n=10

X ~ Bin(p=0.01, n=10)

Let us remember the calculation of probability for the binomial distribution:

P(X=x)=nCx*p^{x}*(1-p)^{(n-x)} with x = 0, 1, 2, 3,…, n

Where

n: number of independent trials

p: success probability  

x: number of successes in n trials

In our case success means finding a defective diskette, therefore

n=10

p=0.01

And for x we just need 0 or 1 defective diskette to reject the package

Hence,

P(X=x)=10Cx*0.01^{x}*(1-0.01)^{(10-x)} with x = 0, 1

So,

P(A)=P(X=0)+P(X=1)

P(A)=10C0*0.01^{0}*(1-0.01)^{(10-0)} + 10C1*0.01^{1}*(1-0.01)^{(9)}

P(A)=0.99^{10}+10*0.01*0.99^{9}

P(A)=0.9957

Now, because we have 3 packages and we might reject just 1 of them, we can find this probability like this:

3*(1-P(A))*P(A)*P(A) = (1-0.9957)*0.9957*0.9957=0.0127

Finally, we have that the probability of returning exactly one of the three packages is 1.27%

3 0
2 years ago
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