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lozanna [386]
3 years ago
10

7.98 is 1/10 of what number?

Mathematics
1 answer:
Lyrx [107]3 years ago
7 0

Answer:

79.8

Step-by-step explanation:

7.98*10=

79.8

to check

(1/10)*79.8=

7.98

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when asked to factor the trinomial 8x2-8x-16, a student gives the answer (x-2)(x+1. What is one thing wrong with this answer?
VashaNatasha [74]
One thing wrong is there is not closing parenthasees after x+1
and also, if you multiply it out, the answer is not 8x^2-8x-16 so the factored form given is worng

the real factored out form is 8(x-2)(x+1)
that person forgot the 8 in the front
5 0
3 years ago
Mai Finished her math assignment 3/5 hours. then she completed her English assignments in 1/3 hours. what was the total amount
algol13
4/15 is the answer!!!!
7 0
2 years ago
Compare using &gt;, &lt;, or =.<br><br> 3 miles_5,000 yards
lina2011 [118]

Answer:

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4 0
3 years ago
What is the solution to the system? <br><br> (___,___)
Rina8888 [55]
For the first line we have a slope of (y2-y1)/(x2-x1)

(2--2)/(1--1)=4/2=2 so we have:

y=2x+b, now solve for b with either of the points, I'll use: (1,2)

2=2(1)+b

b=0 so the first line is:

y=2x

Now the second line:

(1-10)/(4--2)=-9/6=-3/2 so far then we have:

y=-3x/2+b, using point (4,1) we solve for b...

1=-3(4)/2+b

1=-6+b

b=7 so 

y=-3x/2+7 or more neatly...

y=(-3x+14)/2

...

The solution occurs when both the x and y coordinates for each are equal, so we can say y=y, and use our two line equations...

2x=(-3x+14)/2

4x=-3x+14

7x=14

x=2, and using y=2x we see that:

y=2(2)=4, so the solution occurs at the point:

(2,4)


6 0
3 years ago
a father and his son clean the house together in 2 hours. when the son works alone, it takes him an hour longer to clean than it
Marizza181 [45]
It takes the son one and half hours to clean the house. To find this you need the equations F+S=2 and F+1=S. (F=father and S=son) You take the F+1 and substitute it in for S in F+S to get F+(F+1)=2. Then you combined like factors, 2F+1=2, and simplify to get F=.5hr. After this you plug .5 in to F+1=S to get (.5)+1=S, meaning it takes the son 1.5 hour to clean the house. 
7 0
3 years ago
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