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8090 [49]
3 years ago
5

Obtain an estimate for the following computation by rounding the numbers so that the resulting arithmetic can easily be performe

d by hand or in your head. Then, use a calculator to
perform the computation How reasonable is your estimate when compared to the actual answer?
2815-15.458
An estimate of the difference is (Type a whole number
Mathematics
1 answer:
uranmaximum [27]3 years ago
3 0

Answer:

Step-by-step explanation:

2915 can stay as it is; 15.458 should be rounded down to 15.  Then we have

2915-15, or 2900 (which is a very reasonable estimate).

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Mamont248 [21]
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2 years ago
Rearrange the equation so u is the independent variable.<br><br> 4u+8w=-3u+2w4u+8w=−3u+2w
stiv31 [10]

Answer:

Step-by-step explanation:

4u + 8v = -3u + 2v

Solving 4u + 8v = -3u + 2v

Solving for variable 'u'.

Move all terms containing u to the left, all other terms to the right.

Add '3u' to each side of the equation. 4u + 3u + 8v = -3u + 3u + 2v

Combine like terms: 4u + 3u = 7u 7u + 8v = -3u + 3u + 2v

Combine like terms: -3u + 3u = 0 7u + 8v = 0 + 2v 7u + 8v = 2v

Add '-8v' to each side of the equation. 7u + 8v + -8v = 2v + -8v

Combine like terms: 8v + -8v = 0 7u + 0 = 2v + -8v 7u = 2v + -8v

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Divide each side by '7'. u = -0.8571428571v

Simplifying u = -0.8571428571v

7 0
3 years ago
1.928•10^7 in standard notation
Dafna11 [192]

Answer:

19280000

Step-by-step explanation:

5 0
3 years ago
3. Identify a ray in the following figure.
shutvik [7]

Answer:

D- HM

Step-by-step explanation:

A ray has one point and one side that goes on forever. We see this expressed with HM

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HM is a ray

4 0
3 years ago
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