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nordsb [41]
3 years ago
9

Which of the following are mathematical sentences? Check all that apply.

Mathematics
2 answers:
zepelin [54]3 years ago
6 0
C,d,e i think and hope this could help you
shutvik [7]3 years ago
6 0

A and F are not math'l sentences; they're just numbers.

B, C, D and E all comment on the equality of two sides of given equations and are thus math'l sentences. For example: "10 times some number r equals 40."

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One third of the result of three times a number that is increased by 12
VikaD [51]

Answer:

Step-by-step explanation:

1/3 (3x+12)

1/3×3x+1/3×12

x+4

6 0
2 years ago
An egg of a certain kind of insect called a Tachinidae is 0.00002 meters long. What is this length in scientific notation?
GaryK [48]
2.0x10^-5 or 2.0E-5 —this is because as a small decimal number, you move the decimal to the right five spaces and then add a negative to the decimal to indicate that when you translate back (from scientific notation to 0.00002) you will move the decimal to the left
6 0
3 years ago
Read 2 more answers
Evaluate (18)^2-(15)^2<br> Please show working.
dexar [7]

Answer:

99

Step-by-step explanation:

You can solve it by Squaring/multiply 18 by itself and 15 by itself then subtract them both:

(18 × 18) - (15 × 15)

324 - 225

99

You could also do difference of two squares:

(x² - y²)

= (x + y) (x - y)

= (18 + 15) (18 - 15)

= (33) (3)

= 99

8 0
3 years ago
Read 2 more answers
Y=-3x^2+6x+c; (1,0) find C
kogti [31]
<span>Simplifying 3x2 + -6x + c = 0 Reorder the terms: c + -6x + 3x2 = 0 Solving c + -6x + 3x2 = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '6x' to each side of the equation. c + -6x + 6x + 3x2 = 0 + 6x Combine like terms: -6x + 6x = 0 c + 0 + 3x2 = 0 + 6x c + 3x2 = 0 + 6x Remove the zero: c + 3x2 = 6x Add '-3x2' to each side of the equation. c + 3x2 + -3x2 = 6x + -3x2 Combine like terms: 3x2 + -3x2 = 0 c + 0 = 6x + -3x2 c = 6x + -3x2 Simplifying c = 6x + -3x<span>2</span></span>
4 0
3 years ago
Someone please help me I suck @ simplifying thank you
Degger [83]
Or the other is 1/6
3 0
3 years ago
Read 2 more answers
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