Answer:
-12
Step-by-step explanation:
that is b
$127 is the answer.. can i have a brainliest? :)
9514 1404 393
Answer:
a) 230
b) 300
c) 2×10^-2
d) 1.1×10^-6
Step-by-step explanation:
a) 0.26 × 890 ≈ 1/4 × 900 ≈ 225 ≈ 230
b) 1.95/(.67×10^-2) ≈ 2/(2/3)×10^2 ≈ 300
c) 2010×10^-5 ≈ 2×10^3×10^-5 = 2×10^-2
d) 9.98×10^-4/(9×10^2) = 9.98/9×10^(-4-2) ≈ 1.1×10^-6
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YMMV depending on how you do the rounding and approximate multiplication and division.
The first one can be done multiple ways. For most accurate results, increasing one number while decreasing the other is recommended. (You don't want to compute 0.3×900, for example.)
Answer:
Step-by-step explanation:
- <em>During a mathematics activity, teacher Julieta distributed to each of her students 4 straws measuring 2 cm, 3 cm, 7 cm and 8 cm. In this activity, Julieta's students had to build triangles with these straws, without cutting them.
</em>
- <em>How many different triangles could each of Julieta's students form with these straws?</em>
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- <em>Triangle inequality theorem says that no any side of a triangle can be longer or equal to the sum the other two sides</em>
<u>Given measures:</u>
<u>We see that:</u>
Therefore we can't make triangles with the sides of 2 cm, 3 cm and 7 cm or 8 cm
<u>Possible solutions are:</u>
- 2 cm, 7 cm, 8 cm
- 3 cm, 7 cm, 8 cm
So we can make two different triangles
Answer: 355.49
Step by Step:
82.14+9.77+31.35+41.25=164.51
520-164.51=355.49
