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marusya05 [52]
3 years ago
6

What’s the answer and work?:)

Mathematics
2 answers:
vlada-n [284]3 years ago
7 0

Answer:

The answer is 7.5

Step-by-step explanation:


Arlecino [84]3 years ago
5 0

Answer:


Step-by-step explanation:

9.75 divided by 1.3 equals 7.5

I used a calculator... :)

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Mrs. Barrera learned that 21 of
otez555 [7]

Answer:

just do 21/25

Step-by-step explanation:

8 0
3 years ago
A boat goes 3/4 hours with a speed of 8mph and 1/3 hours with a speed of 12mph. What distance did the boat cover in all this tim
Ludmilka [50]

Answer:

<em>10 miles</em>

Step-by-step explanation:

Distance d = v t

v - speed/velocity

t - time

<em>d</em> = \frac{3}{4} (8) + \frac{1}{3} (12) = 6 + 4 = <em>10 miles</em>

4 0
3 years ago
Use the discriminant to describe the roots of each equation. Then select the best description. 2 = x2 + 5x. A) Double root B) Re
fredd [130]

\bf 2=x^2+5x\implies 0=x^2+5x-2\\\\\\\qquad \qquad \qquad \textit{discriminant of a quadratic}\\\\\\0=\stackrel{\stackrel{a}{\downarrow }}{1}x^2\stackrel{\stackrel{b}{\downarrow }}{+5}x\stackrel{\stackrel{c}{\downarrow }}{-2}~~~~~~~~\stackrel{discriminant}{b^2-4ac}=\begin{cases}0&\textit{one solution}\\positive&\textit{two solutions}\\negative&\textit{no solution}\end{cases}\\\\\\(5)^2-4(1)(-2)\implies 25+8\implies 33


so we have a 33, namely two real solutions for that quadratic.


usually that number goes into a √, if you have covered the quadratic formula, you'd see it there, namely that'd be equivalent to √(33), now 33 is a prime number, and √(33) is yields an irrational value, specifically because a prime number is indivisible other than by itself or 1.


so 33 can only afford us two real irrational roots.

3 0
3 years ago
What is the solution to the equation 3(2x+5) = 3x+4x?
n200080 [17]
X=15
expand the brackets and collect like terms so 6x+15=7x
then -6x to get x=15
4 0
3 years ago
How many days are in two years
klasskru [66]
There are 365 days in one year. So to find the amount of days in two years, we do 365*2 to get 730 days

Hope this helps!
6 0
3 years ago
Read 2 more answers
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