3 years ago

Thirty times the square of a non-zero number is equal to 8 times the number. What is the number?

Mathematics

1 answer:

astra-53 [7]3 years ago

4 0

Hello here is a solution :

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How many significant figures will be in the answer when you multiply 3.4 x 4.56?

steposvetlana [31]

There are 2 before the decimal point because 3×4=12 and 12 has two digits.
There are 3 after the decimal point because we add together the number of digits after the decimal point in the operands, which is 1 plus 2=3. In all then there are 2+3=5 significant figures.

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3 years ago

I would really appreciate it if this would get answered thank you

Maksim231197 [3]

Answer: I'll simplify the inequality

11. x≤8

12. y<8

13. z>2

14. b≥12

15. c<1.8

16. already solved a≤0

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3 years ago

Solve the equation by completing the square. Round to the nearest hundredth if necessary. x^2 + 2x = 17

earnstyle [38]

Answer:

Step-by-step explanation:

$(a+b)^2=a^2+2ab+b^2\qquad(8)\\\\x^2+2x=17\\\\x^2+(2)(x)(1)=17\qquad\text{add}\ 1^2\ \text{to both sides}\\\\\underbrace{x^2+(2)(x)(1)+1^2}_{(*)}=17+1^2\\\\(x+1)^2=18\iff x+1=\pm\sqrt{18}\qquad\text{subtract 1 from both sides}\\\\x=-1\pm\sqrt{18}\\\\x\approx-1-4.24=-5.24\ \vee\ x\approx-1+4.24=3.24$

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3 years ago

a boy scout has 3 meters of rope. he cuts the rope into chords 3/5m long. how many chords will he make?

Leya [2.2K]

5 chords!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~

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4 years ago

Jack spent $22 at Petco. He bought a Betta fish for f dollars and other supplies for $14.57. What is the cost of the Betta fish.

MatroZZZ [7]

Answer:

7.43

Step-by-step explanation:

22 - 14.57 = 7.43

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3 years ago