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Zigmanuir [339]
3 years ago
15

Examine A ABC below.

Mathematics
1 answer:
Roman55 [17]3 years ago
8 0

Answer:

  • DE║AC

Step-by-step explanation:

<u>Given relationships:</u>

DE = 2 AC

  • Incorrect. Should be DE = 1/2 AC

DE║AC

  • Correct

m∠BCA = 2(m∠BED)

  • Incorrect. Should be m∠BCA = m∠BED

DE = AC

  • Incorrect. Should be DE = 1/2 AC
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Which equations can be used to solve for acceleration? Check all that apply.
salantis [7]
a =\frac{v_f - v_i}{t}\\\\at = v_f -v_i\\\\\boxed{\bf{v_f =at +v_i}}\\\\\boxed{\bf{v_i = v_f-at}}
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3 years ago
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Which angles below are complementary?
tigry1 [53]

9514 1404 393

Answer:

  ∠KXN and ∠QXT

Step-by-step explanation:

The measure of each angle is the difference of the scale values that the rays intercept. (The same scale needs to be used for each ray.) Of course, complementary angles have a sum of 90°.

Here, we'll refer to angle aXb as "ab".

  NP = 95 -35 = 60

  PQ = 35 -20 = 15  . . .  not complementary to NP

__

  KN = 165 -95 = 70

  QT = 20 -0 = 20  . . .  complementary to KN   ⇒ your answer

__

  JK = 180 -165 = 15

  PQ = 35 -20 = 15  . . . not complementary to JK

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  JK = 15

  NK = KN = 70  . . .  not complementary to JK

6 0
3 years ago
F(x) = -4x2 – x - 3<br> Find f(1)
nadezda [96]

Answer:

-8

Step-by-step explanation:

-4 (1)^2 -(1) -3

-4-1-3=-8

5 0
2 years ago
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The teacher buys a pack of notebooks for give his students the ratio of the gold notebooks to red notebooks is represented in th
katovenus [111]

Answer-

              ~The answer is 40 gold notebooks~

                               (Thank me later~)

7 0
3 years ago
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Lin uses an app to graph the charge on her phone.
exis [7]

Answer:

  • See below

Step-by-step explanation:

<u>Use the graph to answer the following questions:</u>

When did she start using her phone?

  • At 2 afternoon

When did she start charging her phone?

  • At 8 afternoon

While she was using her phone, at what rate was Lin’s phone battery dying?

<u>From 100% to 40% between 2PM and 4 PM:</u>

  • (100 - 40)/(4 - 2) = 60/2 = 30% per hour
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2 years ago
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