MATHEMATICS HIGH SCHOOL

Darnell is building a model submarine using a scale of 1 inch = 16 feet.a. The finished length of the model is 27 inches. What is the actual length of the submarine?
b. Suppose Darnell creates another model and decides to use a different scale. An actual length of 42 feet is shown on the new model as 12
inches. Complete the ratio for the new scale.
1 inch = feet

Answers

Answer 1
Answer:

Answer:

A.  432 feet.

(I'll let somebody else answer B cause im to dum for dat)

Step-by-step explanation:

I did the math and checked :)

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Please help me asap i will mark branlist
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What is the discriminant and number of solutions to the problem- y=2x2+6x+12

Answers

Δ = b² - 4ac
Δ = (6)² - 4(2)(12)
Δ = 36 - 4(24)
Δ = 36 - 96
Δ = -60

y = 2x² + 6x + 12
0 = 2x² + 6x + 12
0 = 2(x²) + 2(3x) + 2(6)
0 = 2(x² + 3x + 6)
2              2
0 = x² + 3x + 6
x = -(3) ± √((3)² - 4(1)(6))
                   2(1)
x = -3 ± √(9 - 4(6))
                2
x = -3 ± √(9 - 24)
              2
x = -3 ± √(-15)
             2
x = -3 ± i√(15)
             2
x = -1.5 ± 0.5i√(15)
x = -1.5 + 0.5i√(15)    or    x = -1.5 - 0.5i√(15)

The discriminant is -60 and the number of solutions is 2.

Yesterday, Julie’s bank account balance was –$10.28. She deposited some money into her account so that her balance is now $39.89.How much did she deposit into her account?

A.$50.17

B.$39.00

C.$29.72

D.$10.00

Answers

Since we're starting with a negative we're going to disregard the negative sign and add the numbers together: $10.28 + $39.89 = $50.17. :)
39.89 - ( -10.28 ) 
The reason you subtract is because the key word is depositied

If f(x) = 3x + 2 and g(x) = x2 – x, find each value.
17 f(-2)=
f(-2) =

Answers

Answer:   -4

Work Shown:

f(x) = 3x + 2

f(-2) = 3(-2) + 2 ... each x replaced with -2

f(-2) = -6 + 2

f(-2) = -4

Can you solve the equation 3/4(6x+9)=14 by using the Division Property of Equality? Explain.

Answers

Division property of equality is dividing both sides of an equation by non zero number.  So the answer is No.
Ex: 5p = 15
p = 3
5 x 3 = 15

Stop here !!!! and help me with this problem , very hard !!!!see the attachment !!!

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Answers

 5 out of 10 marbles are bule
If the first marble is blue and is not replaced, there are 9 marbles left with 4 blue marbles
And therefore, the probability will be:

(5)/(10) × (4)/(9)
=(20)/(90)
It can be simplified further:
=(2)/(9)

Point T is the midpoint of line AB. If TB=6, find the length of AB?

Answers

Answer:

Length of AB is 12

Step-by-step explanation:

Here, we are concerned with finding the full length of line AB, given the distance between the midpoint of the line AB and the point B itself

What this means is that, the distance of the halfway of the full length is 6

So the total distance would be twice the halfway distance

So if the halfway distance is 6, then the full distance would be 6 * 2 = 12

So the length of AB = 12
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