4 years ago

What is 1,260 round to the nearest 100

Mathematics

2 answers:

ankoles [38]4 years ago

7 0

1,300 is the answer

DanielleElmas [232]4 years ago

6 0

Answer:

1,300 is your answer! :)

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Convert 0.70 hours to minutes. Round answers to the nearest tenth.

Dmitrij [34]

Answer:

B. 42 Mins

Step-by-step explanation:

you take .70x60mins and that is 42 mins.

3 0

4 years ago

Not sure what this question is asking...

zalisa [80]

3)

$\bf ~~~~~~~~~~~~\textit{negative exponents}\\\\
a^{-n} \implies \cfrac{1}{a^n}
\qquad \qquad
\cfrac{1}{a^n}\implies a^{-n}
\qquad \qquad 
a^n\implies \cfrac{1}{a^{-n}}
\\\\
-------------------------------\\\\
\cfrac{-9}{2x^5}\implies \cfrac{-3^2}{2x^5}\implies \cfrac{-3^2}{1}\cdot \cfrac{1}{2}\cdot \cfrac{1}{x^5}\implies -\cfrac{1}{3^{-2}}\cdot 2^{-1}\cdot x^{-5}
\\\\\\
-\cfrac{2^{-1}x^{-5}}{3^{-2}}$

4)

$\bf 5^{-2}+5^0\implies \cfrac{1}{5^2}+1\implies \cfrac{1}{25}+1\implies \cfrac{1+25}{25}\implies \cfrac{26}{25}$

6 0

3 years ago

Write the quadratic equation in standard form. What is the value of b 2 - 4ac?

Fittoniya [83]

B^2 - 4ac > 0
2x^2 +7x -1 =0
b =7 a=2 c= -1
b^2 - 4ac = 7^2 - 4*2*(-1)
= 49 + 8
= 57

5 0

3 years ago

Given a and b are first quadrant angles, sin a=5/13 and cos b=3/5 evaluate sin (a-b)1) -33/652) 33/653) 63/65

bezimeni [28]

The correct option is -33/65.

The solution is given below: