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ella [17]
3 years ago
7

Can anyone please help me with these math problems I need it for tomorrow

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
3 0
I hope this helps!

25 is 7.8
26 is 8.3
27 is 14.5
28 is yes, they both ran the same distance because 7×5 is equal to 5×7. They both equal 35. So, both ran the same distance.
sertanlavr [38]3 years ago
3 0
For the 1st one it would be 7.8. This is because 7+0=7 and then adding a decimal when it is 0.8 as in your problem you add the 8 to the end not the beginning. The second one is 8.3 because anytime you multiply by 1 you get the same number. For the third problem you add what is in the parentheses  because in PEMDAS you always start with parentheses. So, 4+7=11. Next, you will add 11 and 3.5 which is 14.5. I hope this helps!
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Answer:

304(pi) g

Step-by-step explanation:

First we find the volume of the hollow ball. Then we find the mass using the volume and density.

Let R = exterior radius = 3 cm

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volume = exterior volume - interior volume

volume = (4/3)(pi)R^3 - (4/3)(pi)r^3

volume = (4/3)(pi)(R^3 - r^3)

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6 0
3 years ago
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olga nikolaevna [1]

Answer:

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Step-by-step explanation:

step 1: We need the assumption that 44.1 is 100% since it is our output value

step 2: We need to represent the value we seek in x

step 3: From step 1, it follows that 100% = 44.1

step 4: In the same vein x% = 59

step 5: This give us a pair of simple equations:

100% = 44.1 (1)

x% = 59 (2)

step 6: by simplify dividing equation 1 by equation 2 and taking note of the fact that both the LHS (left hand side) of both equations have the same unit (%); we have

\frac{100}{x}  =   \frac{44.1}{59}

step 7: Taking the inverse (or reciprocal) of both sides yields

\frac{x}{100 }  =  \frac{59}{44.1}

= x = 133.78684807256

Therefore, 59 is 133.78684807256% of 44.1

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2 years ago
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Inga [223]

Answer:

a=\dfrac{1}{2}\\ \\b=-3\\ \\c=0

Step-by-step explanation:

The general form of the quadratic equation is

ax^2+bx+c=0

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It can be rewritten in standard form as

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Hence,

a=\dfrac{1}{2}\\ \\b=-3\\ \\c=0

8 0
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