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3 years ago

Can you help pleasethanks

Mathematics

2 answers:

Zanzabum3 years ago

6 0

First you would divide 53 by 100 which is .53
Then you would multiply that by 20 and get 10.6 which would be your tip
Next you would do .53 times 6 which is 3.18. Add that to 53 and get 56.18

Svetach [21]3 years ago

4 0

If you're talking about number 18 its the first option

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Challenge: x(2)+9x+c :-D

kvv77 [185]

Answer:

×(2)+9×+c

2×+9×+c =

11x+c

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3 years ago

Find the positive difference between the two solutions to the equation <img src="https://tex.z-dn.net/?f=%20%5Cdisplaystyle%5Csq

Verizon [17]

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4 years ago

The diameter of a circle measures 28 mm. What is the circumference of the circle?

Papessa [141]

Answer:

C = 87.92 mm

General Formulas and Concepts:

Symbols

π (pi) ≈ 3.14

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Geometry

Circumference Formula: C = πd

C is circumference
d is diameter

Step-by-step explanation:

Step 1: Define

Diameter d = 28 mm

Step 2: Solve

Substitute in variables [Circumference Formula]: C = 3.14(28 mm)
[Circumference] Multiply: C = 87.92 mm

8 0

3 years ago

I need the answer fast pls

Nataliya [291]

Answer:

C. 15

Step-by-step explanation:

You just need to add the number of dots, hoped this helped and was fast enough

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Solving systems equations by elimination

pishuonlain [190]

I won't answer them all for you (don't want to cheat - need to learn something).
But for the first one given:

-2x-9y=-25
-4x-9y=-23

you set up either x or y (which ever one you want to eliminate) so that one of them cancels.
So this one is easy - you just have to multiply an entire row by negative (doesn't matter which one) - so that the y's will be + and -

Since they're both 9 and they're subracting NOW - you can eliminate the y value. Now add/subtract the x's. So it'd be -2 or 2 depending on how you eliminated y. Then add the number outside of the = sign. Now just solve for x. After that plug in whatever you got for x into both of the rows. Then find the y value.

Hopefully this wasn't confusing -- reply if it is and I will try to simplify. I can give you contact if you need help with the rest

Good luck!

3 0

3 years ago