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Diano4ka-milaya [45]
3 years ago
14

Simplify 4c - 5c + 6c

Mathematics
1 answer:
elixir [45]3 years ago
3 0
Really !  Why do you let math scare you like that ? ?

How about this:       (4 cows) - (5 cows) + (6 cows)

I'll bet you have no problem seeing that it's  5 cows .

So why do you totally clutch when they're just  C's  instead of cows ? ?
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A group of people were asked if they had run a red light in the last year. 385 responded "yes", and 472 responded "no".
Dimas [21]

Answer:

44.9%

Step-by-step explanation:

you can find the probability by dividing the total number of people by the number of people who have run a red light:

385/857

simplify into a decimal:

0.449

convert into a percent to get your answer:

44.9%

3 0
3 years ago
Can anyone help me solve this?
schepotkina [342]

Answer:

the answer is

<em>n</em><em>=</em><em>5</em>

SANA MAKATULONG

<em>AND</em><em> </em><em>PLS</em><em> </em><em>FOLLOW</em>

7 0
2 years ago
Read 2 more answers
Mis Brown graded 84 papers. If the ratio of science papers to math papers is 2:10 how many math papers did she grade?​
mr Goodwill [35]

Answer:

70

Step-by-step explanation:

2 + 10 = 12

84 ÷ 12 = 7

7 x 10 = 70

She graded 70 maths papers and 14 science papers.

5 0
3 years ago
9. Find the length of a base of a triangle with<br>an Area of 100 and a height of 25.​
liraira [26]

Answer:

8 (units)

Step-by-step explanation:

The formula to find the area of a triangle is A = 1/2(b*h). Since we know the area already, we can substitute that value in to calculate the answer backwards.

Plug in the numbers known:

A = 100

h = 25

Equation: 100 = 1/2(b*25)

Now solve:

100 = 1/2(b*25)

200 = b * 25

<em>8 = b</em>

So, the answer to your question is 8 (units).

Hope this helps!

6 0
3 years ago
Daniel dives into a swimming pool. The height of his head is represented by the function h(t) = -8t2 - 28t + 60, where t is the
8_murik_8 [283]
So, h(t) is how far is Daniel's head from the surface of the water, namely the surface itself is when the height is nill, so his head is at the surface and the height of it is just 0, thus h(t)  = 0.  Namely, what is "t" when h(t) is 0?

\bf h(t)=-8t^2-28t+60\implies \stackrel{h(t)}{0}=-8t^2-28t+60&#10;\\\\\\&#10;0=-2t^2-7t+15\implies 2t^2+7t-15=0\implies (2t+3)(t-5)=0&#10;\\\\\\&#10;\begin{cases}&#10;2t+3=0\implies 2t=-3\implies &t=-\frac{3}{2}\\\\&#10;t-5=0\implies &\boxed{t=5}&#10;\end{cases}

clearly the seconds cannot be a negative unit, so is not -3/2.
6 0
3 years ago
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