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3 years ago

Can someone explain this to me my teacher did not explain how to do these problems well.

Mathematics

1 answer:

NikAS [45]3 years ago

8 0

Answer:

64.8cm = x + y

The maximum sleeve length, x, plus the maximum allowable deviation, y, is 62.2cm = x - y

Step-by-step explanation:

The minimum sleeve length is the ideal length, x, minus the maximum allowable deviation, y.

64.8cm + 62.2cm = x + y + x - y

127.0cm = 2x

63.5cm = x

There are now two equations with two unknowns so both variable can be solved for.

Add the equations together and solve for the ideal length, x.

64.8cm = 63.5cm + y

1.3cm = y

Substitute x into either of the original equations and solve for y.

Result:

x = 63.5cm

±y = ±1.3cm

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2. Here is triangle ABC.

rusak2 [61]

Triangle abc is a regular triangle

8 0

2 years ago

Simplify

denis23 [38]

Hello!

Answer:

1. =-6

2. =39

3. =-603

_________________________________________________

Explanation: This question's it's about the order of operations. It stands for p-parenthesis, e-exponents, m-multiply, d-divide, a-add, and s-subtract. It can also go left to right. (PEMDAS)

1. -4(3-1)+2

Do parenthesis first.

$(3-1)=2$

$-4*2+2$

Then do multiply left to right.

$-4*2=-8$

Add left to right.

$-8+2$

$8-2=6$

*Answer should be have negative sign.*

Answer: → $\boxed{=-6}$

______________________________________________________

2. 3⋅[(30−8)÷2+2]

Do parenthesis first.

$(30-8)=22$

$22/2+2$

Then divide left to right.

$22/2=11$

Add left to right.

$11+2=13$

Multiply left to right.

$3*13=39$

*Answer should be have positive sign.*

Answer: → $\boxed{=39}$

_____________________________________________________

3. 14(1-23)2+13

Do parenthesis first.

$(1-23)=-22$

$14(-22)*2+13$

Then, you multiply left to right.

$14(-22)=-308$

$-308*2=-616$

Add/subtract left to right.

$-616+13$

$616-13=603$

*The answer must be have a negative sign*

Answer: → $\boxed{=-603}$

____________________________________________________________

Hope this helps!

Thank you!

Have a great day!

-Charlie

7 0

3 years ago

Find the perimeter of each figure?

Levart [38]

11- 59.1. Got the Answer for #11, but for #12 you lowkey should just use any type of calculator for that shape

8 0

3 years ago

Read 2 more answers

Someone tell me where everyone is going right please !!

myrzilka [38]

Answer:

A 2

B 1

C 4

D 3

Step-by-step explanation:

( ) means not including (also used for infinity)

[ ] means including

The answer choices are in interval form, showing all the possible answer choices between two numbers and if the answer choice includes or excludes a number using the () []

Explanation for A:

x < 7.8 means x won't include 7.8 since the symbol is "less than" and not "less than or equal to".

x can be anything, it just has to be less than 7.8, so the answer is:

2 (-infinity, 7.8)

Explanation for B:

x <= 7.8 means x will include 7.8 since the symbol means "less than or equal to".

x can be anything, it just has to be less than or equal to 7.8, so the answer is:

1 (-infinity, 7.8]

Explanation for C:

x >= 7.8 means x will include 7.8 since the symbol means "greater than or equal to".

x can be anything, it just has to be greater than or equal to 7.8, so the answer is:

4 [7.8, infinity)

Explanation for D:

x > 7.8 means x won't include 7.8 since the symbol means "greater than" and not "greater than or equal to".

x can be anything, it just has to be greater than 7.8, so the answer is:

3 (7.8, infinity)

Hope it helps (●'◡'●)

5 0

2 years ago

Read 2 more answers

Please help don’t understand

Volgvan

Answer:

option b is the correct answer .

Step-by-step explanation:

=4^5×4^12

=4^17 is the answer.

3 0

3 years ago