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3 years ago

Explain how to estimate 368+231 in two ways

Mathematics

2 answers:

VLD [36.1K]3 years ago

8 0

1st way= Round your SUM to the closest. Example: 44 is close to 40 since its not 45 yet.

DiKsa [7]3 years ago

7 0

1st way. 368 is closest to 370
2nd way. 231 is closest to 230
3rd way. Your sum will be 699, Closest to 700.

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Eva8 [605]

-2(y-3)=22
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2 years ago

What is the first step in describing what figure results when a given plane intersects a given three-dimensional figure

mafiozo [28]

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2 years ago

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Varvara68 [4.7K]

Answer:

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2 years ago

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HELPPPPPPPPPPPPPPP RATE 5 STARSS

Stels [109]

Answer:

13. c,

14. a.

Step-by-step explanation:

13. The length of a side PQ with coordinates of

P as (x,y) and Q as (w,z)

is: $\sqrt{(x-w)^{2} +(y-z)^{2} }$

so, the length of the side AB =

$\sqrt{(5-5)^{2}+(-2+7)^{2} } =\sqrt{0^{2}+5^{2} } =5$

the length of side BC =

$\sqrt{(5-1)^{2}+(-7+2)^{2} } =\sqrt{(4)^{2}+(-5)^{2} } =\sqrt{4^{2}+5^{2} }$

the length of side AC=

$\sqrt{(5-1)^{2} +(-2+2)^{2} } =\sqrt{4^{2} } =4$

now, the easiest one will be when the vertices are on the coordinate axes.

so, option c will be the most appropriate one.

14. If u see the figure clearly, the lines l and FH are parallel.

the parallel postulate, i.e, the alternate interior angles will always be congruent.

here, the alternate interior angles are angle1 and angle4.

therefore to prove this step, he used parallel postulate as a reason.

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3 years ago

Trish has 7 cans of dog food for 3 days. She will feed each dog 2 1/3 cans of food each days. If she wants to feed them 3 cans e

Minchanka [31]

Answer:

2 more cans

Step-by-step explanation:

2 1/3 x 3 = 7 cans (this the amount of cans of dog food she has)

3 x 3 = 9

the 3 represents how she wants to feed 3 cans of dog food each day for 3 days; the other 3 represents 3 days

9 - 7 = 2

7 0

2 years ago