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Leno4ka [110]
3 years ago
12

A car 12.8 feet long. Jane uses a scale of 1 in. to 2 ft. for making a model of a car. How long is her car model.

Mathematics
2 answers:
Olenka [21]3 years ago
6 0
The total length of her car model should 6.4 in. If you change the 2 ft into inches, the ratio becomes 1in. to 24in. Change the 12.8ft. to in. and get 153.6in. (by multiplying by 12) divide 153.6in. by 24in. and get 6.4in.
iogann1982 [59]3 years ago
3 0
The total length of her car model should be 6.4
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Snezhnost [94]

Answer. First option: t > 6.25


Solution:

Height (in feet): h=-16t^2+729

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h < 104

Replacing h for -16t^2+729

-16t^2+729 < 104

Solving for h: Subtracting 729 both sides of the inequality:

-16t^2+729-729 < 104-729

-16t^2 < -625

Multiplying the inequality by -1:

(-1)(-16t^2 < -625)

16t^2 > 625

Dividing both sides of the inequality by 16:

16t^2/16 > 625/16

t^2 > 39.0625

Replacing t^2 by [ Absolute value (t) ]^2:

[ Absolute value (t) ]^2 > 39.0625

Square root both sides of the inequality:

sqrt { [ Absolute value (t) ]^2 } > sqrt (39.0625)

Absolute value (t) > 6.25

t < -6.25 or t > 6.25, but t can not be negative, then the solution is:

t > 6.25



5 0
3 years ago
Read 2 more answers
How to solve x/3 + 4 = -2
r-ruslan [8.4K]

Answer:

x=−18

Step-by-step explanation:

Let's solve your equation step-by-step.

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3

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Step 1: Simplify both sides of the equation.

1

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x+4=−2

Step 2: Subtract 4 from both sides.

1

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x+4−4=−2−4

1

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x=−6

Step 3: Multiply both sides by 3.

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5 0
2 years ago
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vagabundo [1.1K]

Answer:  Option 'a' is correct.

Step-by-step explanation:

Since we have given that

"THIS MESSAGE IS TOP SECRET."

We need to use the Caesar cipher.

As in general we always take a shift of 3 keys in Caesar cipher.

so, According to shift of 3 keys it becomes,

T→W

H→K

I→L

S→V

M→P

E→H

A→D

G→J

O→R

C→F

R→U

P→S

So, it can be written as

"THIS MESSAGE IS TOP SECRET."

WKLVP HVVDJ HLVWR SVHFU  HW.

we make a set of 5 letters in a word after Caesar cypher.

Hence, Option 'a' is correct.

8 0
3 years ago
Can some one help me. btw the answer is not C.​
Anit [1.1K]

Answer:

A

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Given

x² + 6x

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add ( half the coefficient of the x- term )² to x² + 6x

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Its 10 if its scaled down.

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2 years ago
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