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AysviL [449]
3 years ago
6

Select the correct answer. What is the value of x in 2 (5x) = 14

Mathematics
2 answers:
loris [4]3 years ago
6 0

Answer:

x= 7/5

Step-by-step explanation:

Use Cymath.com for math because it shows its work, and so you don't have to waste points! ^^

GalinKa [24]3 years ago
5 0

Answer:

x = 1.4

Step-by-step explanation:

2 (5x) = 14

10x = 14

x = 14 ÷ 10

x = 1.4

Checking...

10 (1.4) = 14

14 = 14

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padilas [110]

Answer: 255

Step-by-step explanation:

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2 years ago
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Which triangle side lengths form a right triangle? Choose all that apply.
Radda [10]

Your answer would be C (8,15,17) and E (15,20,15) or is it 25?

Step-by-step explanation:

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5 0
3 years ago
ABCD-is-a-parallelogram-P-and-Q-are-two-points-on-the-diagonal-BD-such-that-DP-QB-Prove-that-APCQ-is-a-parallelogram?
Amanda [17]

A quadrilateral in which both pairs of opposite sides are parallel is called a <u>Parallelogram</u>

Step-by-step explanation:

A quadrilateral is said to be  parallelogram if

  • If its opposite sides are equal
  • If the  opposite angles are equal
  • If the diagonals bisect each other
  • If  a pair of opposite sides is equal and parallel.

From the question given above

<u>ABCD is a parallelogram and P and Q are points on BD such that</u>

<u>DP=QB</u>

In ΔAPD and ΔCQB,--------------------------(i)

DP = QB (Given)

∠ADP = ∠CBQ (Alternate interior angles)

AD = BC

(Hence it is proved that -Opposite sides of a parallelogram are equal)

so, ΔAPD ≅ ΔCQB    (As per  SAS congruence rule)

 If , ΔAPD ≅ ΔCQB.-------------------------(ii)

AP = CQ               ( by CPCT )

 In ΔAQB and ΔCPD,-----------------------(iii)

BQ = DP (Given)

∠ABQ = ∠CDP (Alternate interior angles)

AB = CD  (Opposite sides of a parallelogram)

so, ΔAQB ≅ ΔCPD                       (As per  SAS congruence rule)

(iv) AQ = CP              (According to  CPCT as ΔAQB ≅ ΔCPD.)

 From (ii)  and (iv) equation ,we can say that

AP=CQ ,

AQ=CP

<u> It is proved that APCQ has equal opposite sides also it has equal opposite angles. </u><u>Hence,APCQ is a Parallelogram</u>

4 0
3 years ago
Which of these strategies would eliminate a variable in the system of equations?
Novosadov [1.4K]

Multiply the top equation by 6 and and the bottom equation by –5 and then add the equations is the correct answer.

Solution:

Given system of equations:

8x + 5y = –7 – – – – (1)

–7x + 6y = –4 – – – – (2)

Multiply top equation by 6 and and bottom equation by –5

(1) × 6 ⇒ 48x + 30y = –42

(2) × –5 ⇒ 35x – 30y = 20

Now add these two equations, we get

(48x + 30y) + (35x – 30y) = –42 + 20

48x + 35x + 30y  – 30y = –42 + 20

83x = –20

The variable y is eliminated.

Therefore Multiply the top equation by 6 and and the bottom equation by –5 and then add the equations is the correct answer.

3 0
3 years ago
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