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Trava [24]
3 years ago
14

Find the value of x​

Mathematics
1 answer:
a_sh-v [17]3 years ago
3 0

4x - 7 = 3x + 9

x = 16

they're equal because they are opposites by the vertex.

<em />

<em>hope it helps :)</em>

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Katen [24]

Answer:

It is Third quardant in Graph

7 0
3 years ago
7. In the accompanying diagram of rhombus CDEF, diagonal FD is drawn and the
tatiyna

Answer:

m∠CFD is 70°

Step-by-step explanation:

In the rhombus

  • Diagonals bisect the vertex angles
  • Every two adjacent angles are supplementary (their sum 180°)

Let us solve the question

∵ CDEF is a rhombus

∵ ∠E and ∠F are adjacent angles

→ By using the second property above

∴ ∠E and ∠F are supplementary

∵ The sum of the measures of the supplementary angles is 180°

∴ m∠E + m∠F = 180°

∵ m∠E = 40°

∴ 40° + m∠F = 180°

→ Subtract 40 from both sides

∵ 40 - 40 + m∠F = 180 - 40

∴ m∠F = 140°

∵ FD is a diagonal of the rhombus

→ By using the first property above

∴ FD bisects ∠F

→ That means FD divides ∠F into 2 equal angles

∴ m∠CFD = m∠EFD = \frac{1}{2} m∠F

∴ m∠CFD = \frac{1}{2} (140°)

∴ m∠CFD = 70°

6 0
3 years ago
D) - 15/3 = x + 1<br> how do i solve this
kobusy [5.1K]

Answer:

x = - 6

Step-by-step explanation:

- 15/3 = x + 1

- x = 1 + 15/3

- x = 3/3 + 15/3

- x = 18/3

x = - 18/3

x = - 6

6 0
3 years ago
Pre-Algebra <br> Due now<br> Please help, thank you
slamgirl [31]

Answer:

1. The \sqrt{10} is between 3 and 4.

2. The \sqrt{54} is between 7 and 8.

3. The \sqrt{18} is between 4 and 5.

4. The \sqrt{99} is between 9 and 10.

5. The \sqrt{41} is between 6 and 7.

Step-by-step explanation:

1. \sqrt{10}: 10 is near the perfect squares 9 and 16, which would mean its answer is between their square roots which are 3 and 4.

2. \sqrt{54}: 10 is near the perfect squares 49 and 64, which would mean its answer is between their square roots which are 7 and 8.

3. \sqrt{18}: 10 is near the perfect squares 16 and 25, which would mean its answer is between their square roots which are 4 and 5.

4. \sqrt{99}: 10 is near the perfect squares 81 and 100, which would mean its answer is between their square roots which are 9 and 10.

5. \sqrt{41}: 10 is near the perfect squares 36 and 49, which would mean its answer is between their square roots which are 6 and 7.

8 0
2 years ago
Read 2 more answers
this app honestly just never helps me! i post my questions and i never get them answered and its so annoying because i actually
yanalaym [24]
This is a site run by students for students. And to attract viewers you need to give out some good points,and another thing is that this app HELPS you,because at the end of the day this app is not gonna sit beside you in exam. You have to do the studying. Anyways,I will see if i can answer some of your questions.
5 0
3 years ago
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