3 years ago

A math teacher graded 45 problems in

1 answer:

5 0

75 problems
3/5 of an hours is 36 minutes you can then do 45 over 36 mins and set it equal to x over 60 mins then you do 45 times 60 which equals 2700 then you divide 2700 by 36 and you get 75

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Please help I’ll give brainliest

mr Goodwill [35]

Answer:

367.5

Step-by-step explanation:

5x7x10.5

7 0

3 years ago

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Answer this please !

SpyIntel [72]

Answer:

Step-by-step explanation:

$\frac{y}{2} =x^{2} -7$

$\frac{a}{2} =2^{2} -7$

$\frac{a}{2} =-3$

$a=-6$

$\frac{b}{2} =1^{2} -7$

$\frac{b}{2} =-6$

$b=-12$

From the calculations above, we learn that line l and the curve intersect at (2, -6) and (1, -12). Next, we will set up a system of linear equations to solve for the slope and the y-intercept of line l.

$-6=2m+b$

$-12=m+b$

$-24=2m+2b$

$18=-b$

$b=-18$

$-12=m-18$

$m=6$

Therefore, the slope of line l is 6.

3 0

1 year ago

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The interest that Cindy earns on her investment is given by the equation l = 42t where t is the time in years that her money is

alexandr1967 [171]

I = 42t

When t = 5, I = 42*5 = 210

When t = 6, I = 42*6 = 252

When t = 7, I = 42*7 = 294

When t = 8, I = 42*8 = 336

When t = 9, I = 42*9 = 378

When t = 10, I = 42*10 = 420

8 0

3 years ago

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What is 3x3x4/45 does anyone know the answer

MariettaO [177]

Answer:

4/5 or 0.8

Step-by-step explanation:

3*3*4/45

3*3=9

9*4=32

32/45=4/5

Hope it helps ;)

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3 years ago

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How many lines of symmetry does the following figure have? 1 3 4 5

iren2701 [21]

Answer:

Step-by-step explanation:

It has 1 lines of symmetry

Hopes this helps

#ViolentJax

6 0

2 years ago