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soldi70 [24.7K]
3 years ago
15

Use the distributive property to expand the following expression.

Mathematics
1 answer:
Levart [38]3 years ago
3 0

Answer:

-12.8x - 20y + 8.4

Step-by-step explanation:

To do this you just multiply everything by negative 4

so we have 3.2x*-4 + 5y*-4 - 2.1*-4

This gives us

-12.8x - 20y + 8.4

The last term is positive because we multplied a negative by another negative

You might be interested in
In ABC, if CB AC≅ , m∠A = 3x + 18, m∠B = 7x – 58, and m∠C = 2x – 8, find x and the measure of each angle.
lesya692 [45]

9514 1404 393

Answer:

  x = 19

  A = 30°

  B = C = 75°

Step-by-step explanation:

In an isosceles triangle, the angles opposite the congruent sides have the same measures.

  A = B

  3x +18 = 7x -58

  76 = 4x . . . . . . . . add 58-4x

  19 = x . . . . . . . . . divide by 4

Then the equal angles measure ...

  A = B = 3(19) +18 = 75

  C = 2(19) -8 = 30

Angles A, B, C measure 75°, 75°, 30°, respectively.

_____

<em>Alternate solution</em>

The sum of angles in a triangle is 180°, so you could write ...

  (3x +18) +(7x -58) +(2x -8) = 180

  12x = 228 . . . . . add 48

  x = 19 . . . . . divide by 12

6 0
3 years ago
Tylique ate 1/2 of a pizza. His friend Connor ate the same amount of a same-sized pizza. Connor’s pizza was cut into 10 slices.
arlik [135]

Answer:

5

Step-by-step explanation:

10*1/2=5

Connor ate half of the slices, half of 10(Being the slices connors pizza was cut into) is 5

3 0
3 years ago
Need help to find the unit rate
Elodia [21]
2 miles: 1/2 hour
? mile: 1 hour
(2÷1/2)mi/h or B is your final answer. Hope it help!
5 0
3 years ago
Two lines are intersected by a third line. If 2 6, which must be true about 2? 2 5 2 is complementary to 5. m2 = m8 2 is supplem
sineoko [7]
If this scenario is a pair of parallel lines intersected by a transversal then it is true that
2 = 6
Then, among the choices, the statement that is true is
2 is supplementary to 8 since 6 is supplementary to 8
By transitivity property, 2 is supplementary 8
4 0
3 years ago
Read 2 more answers
PLEASE HELP!! Due at 11:15
Strike441 [17]

Answer:

The angles are complementary angles because they are 90

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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