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Vesnalui [34]
3 years ago
11

I really need help I have 20 minutes

Mathematics
2 answers:
nlexa [21]3 years ago
7 0

Answer:

a. -1.7

b. -1.2

c. -0.5

d. 0.6

e. 1.1

Step-by-step explanation:

Ede4ka [16]3 years ago
6 0

Answer:

bjgkhagnakjkmk knakhjkjugrfhewj uwgewguwghnrujwbewfb h bjbkejf

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Explain in words how to solve the following problem.Maske sure to include all steps and the answer. 3/7 divided by 1/2
Maksim231197 [3]
To divide by a fraction is to multiply by its recipricle.
3/7 × 2/1
simplify fraction
3/7 × 2
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3 0
3 years ago
Read 2 more answers
Experimentally verify sum of three angles of an triangle is 180⁰.​
svetlana [45]

Draw line a through points A and B. Draw line b through point C and parallel to line a.

Since lines a and b are parallel, <)BAC = <)B'CA and <)ABC = <)BCA'.

It is obvious that <)B'CA + <)ACB + <)BCA' = 180 degrees.

Thus <)ABC + <)BCA + <)CAB = 180 degrees.

Lemma

If ABCD is a quadrilateral and <)CAB = <)DCA then AB and DC are parallel.

Proof

Assume to the contrary that AB and DC are not parallel.

Draw a line trough A and B and draw a line trough D and C.

These lines are not parallel so they cross at one point. Call this point E.

Notice that <)AEC is greater than 0.

Since <)CAB = <)DCA, <)CAE + <)ACE = 180 degrees.

Hence <)AEC + <)CAE + <)ACE is greater than 180 degrees.

Contradiction. This completes the proof.

Definition

Two Triangles ABC and A'B'C' are congruent if and only if

|AB| = |A'B'|, |AC| = |A'C'|, |BC| = |B'C'| and,

<)ABC = <)A'B'C', <)BCA = <)B'C'A', <)CAB = <)C'A'B'.

4 0
3 years ago
Which of the following represents the area of a rectangle whose length is x − 7 and whose width is x + 12? (1 point) a.\x2+x − 8
Nikitich [7]
The answer would be A
3 0
3 years ago
Hich math expression means "the product of 16 and 26"?
AnnyKZ [126]

Answer:

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4 0
3 years ago
Help need to do this by tomorrow
Nuetrik [128]

Answer:

42 degrees

Step-by-step explanation:

To find the complement of an angle, subtract that angle from 90.

90 - 48 = 42

5 0
3 years ago
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