MATHEMATICS HIGH SCHOOL

Micheal is building an iron man from junk in his dad's yard: he starts with a prototype of 1.8m high:he wants to make it 120m high.How large does he need the little finger if it is 6cm long on the model?

Please write the steps..thnx:)

Answers

Answer 1
Answer: Ok, so the first thing you need is how much taller the second model is than the first model the way we do that is we take the second model height and divide that by the first model height 120/1.8=66.667 or 66 2/3 Second now we need to multiply the length of the middle finger by 66.667
6*66.667=400 cm now we just need to convert 400 cm to meters and since there are 100 cm in a meter we can do this 400/100=4 me so the answer is the little finger needs to be 4 meters long.

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A 135 degree angle is classified as what

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An Acute angle is an angle is under 90 degrees, a right angle is 90 degrees, and obtuse angle is greater than 90 degrees but less than 180 degrees.... which out of these angles you would choose an Obtuse angle.

lorenzo has a checkbook balance of $118.00. he writes two checks, one for $ 9.00 and one for $84.25.He then deposits $95.00. finally he uses his calculator to determine his new balance. which one of the following series represents the correct order in which he should press the keys on his calculator?

Answers

$118.00 - $9.00 - $84.25 + $95.00 is the correct order

The correct order of key presses on the calculator is 118.00 - 9.00 - 84.25 + 95.00 =

How did we arrive at this assertion?

To determine Lorenzo's new balance using a calculator, follow these steps in the correct order:

1. Enter the initial checkbook balance: Press the keys 118.00.

2. Subtract the amount of the first check: Press the subtraction key (-) followed by 9.00.

3. Subtract the amount of the second check: Press the subtraction key (-) followed by 84.25.

4. Add the amount of the deposit: Press the addition key (+) followed by 95.00.

5. Calculate the new balance: Press the equals key (=).

Therefore, the correct order of key presses on the calculator is:

118.00 - 9.00 - 84.25 + 95.00 =

learn more about checkbook balance: brainly.com/question/3719189

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Consider two linear transformations y = T(x) and z = L(y), where T goes from R^m to R^p and L goes from R^p to R^n. Is the transformationz = L(T(x)) linear as well ? [The transformation z = L(T(x)) is called the composite of T and L.]

Answers

Yes.

Proof: Consider x, y in R^m. Then since T is linear, we have:

T(a*x + b*y) = a*T(x) + b*T(y)

But since L is linear, we have:

L(a*T(x) + b*T(y)) = a*L(T(x)) + b*L(T(y))

So:

L(T(a*x + b*y)) = a*L(T(x)) + b*L(T(y))

and the composition is linear.

Sunday: 1 1 2 Monday: 1 Tuesday: 2 1 2 Wednesday: 1 3 4 Thursday: 2 Friday: 1 1 2 Saturday: 2 Jenna is a swimmer and trains every day. The schedule shown outlines the number of hours she trains each day. If she misses the Wednesday practice, what is the total number of hours that she trains? A) 10 1 2 hours B) 10 C) 11 3 4 hours D) 12 hours

Answers

12 1\4

yeppppp thats tghe answer btw what school do yall go to?

What's the value of X

Answers

(x+1)^2 -(x-1)^2 = 32 \n \nx^2+2x+1 -(x^2-2x+1)=32\n \nx^2+2x+1-x^2+2x-1=32\n \n 4x =32\ \ / :4 \n \nx=(32)/(4)\n \nx=8
All the busy-work is on the left side.

1). Take care of the (x+1)² . . .

(x + 1)² = x² + 2x + 1

2).  Take care of the (x-1)² . . .

(x - 1)² = x² - 2x + 1

The problem says that (the first expression) minus (the second expression) is 32 .

(x² + 2x + 1) - (x² - 2x + 1) = 32

Can you handle this ?
Only one more touchy point to take care of . . . removing the second parentheses.
Since there's a negative sign before it, that changes the sign of everything inside:

(x² + 2x + 1) PLUS (- x² + 2x - 1) = 32

Now you can just erase all the parentheses:

x² + 2x + 1   -  x² + 2x - 1 = 32

Now I'm just going to write the things on the left side in a different order,
without changing anything:

x² - x²     + 2x + 2x        + 1 - 1 = 32

Isn't that neat ? ! ?
What you have now is:

4x = 32

Divide each side by 4 :

x = 8


Just watch how slick that works:

(x + 1)² - (x - 1)² = ?

(x + 1) = 9      (x - 1) = 7

(9)² - (7)² = 81 - 49 = . . . . . . . . 32 !

спасибо
Удачи

Please help me and this is very hard for me

Answers

I'm assuming you want help with numbers 7 and 8 because multiplication should be easy

so
7.  rico average=15.5mph or 15.5/h
in 2.5 hours how far travel
15.5 in 1 hour
in 2 hours he will travel 2 times 15.5 miles
so in 2.5 hours he will travel 15.5 times 2.5 miles or 38.75


8. use estimation to show reasonable
15.5 can be rounded to 16
16 times 2 is 32
16 times 3 is 48
0.5 is half of 1 so the average is about the answer
(32+48)/2=80/2=40
he will travel about 40 miles (less since you rounded 15.5 up to 16)
so it is reasonable
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