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geniusboy [140]
3 years ago
13

Which equation has infinitely many solutions?

Mathematics
1 answer:
olga2289 [7]3 years ago
4 0

Answer:

B. and C. both equations has infinitely many solutions.

Step-by-step explanation:

  • B. 3(4y-5)=12y-15 → 12y-15=12y-15
  • C. 4(5y+2)=20y-6 → 20y+8=20y-6

In both the equations, value of y cannot be determined, so they have infinitely many solutions.

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Points A, B, and C are midpoints of the sides of right triangle DEF.
Radda [10]

Answer:

1) True 2) True 3) False 4) True

Step-by-step explanation:

In this question let's verify those options

1.Triangle A B C is inside triangle D E F. (true)

If A, B and C are midpoints of DEF then connecting those midpoints we have an interior triangle.

2. Point A is the midpoint of side F D, point B is the midpoint of side D E, point C is the midpoint of side F E. (true)

3. Angles D F E and A B C are right angles. (false)

These triangles are similar. And In this case, the right angles are:

E\hat{D}F\cong A\hat{C}B=90^{\circ}\\\measuredangle D=\measuredangle C=90^{\circ}

D and C are opposed to the larger side, and not F, and B

Because:\measuredangle F\cong\measuredangle B \neq90^{\circ}

4. The length of D E is 10 centimeters, the length of F D is 6 centimeters, and the length of F E is 8 centimeters. (true)

Let's test this by the Pythagorean Theorem. For DE is the hypotenuse and FD and FE is their legs.

\overline{DE}=\sqrt{FD^{2}+FE^{2}}\\\overline{DE}=\sqrt{8^{2}+6^{2}}\\10= \sqrt{100}\\10=10

8 0
3 years ago
Read 2 more answers
Mike has a 9 foot long board. He needs to cut it into 12 equal parts. How many feet long should each section be?
telo118 [61]
Multiply 9 feet times 12 inches and you get 108 inches. Then take 108 inches and divide it by 12 sections, you get 9 inches.

Answer: Each section should be 9 inches long, or 0.75, or 3/4 feet long.  
3 0
3 years ago
Can you Solve for c?​
Gennadij [26K]

Answer:

3\sqrt{2} or \sqrt{18}

Step-by-step explanation:

Use 45-45-90 triangle theorem

3*\sqrt{2}

3 0
3 years ago
10a + 4 =<br><br> ........................................
olga2289 [7]
What does 10a + 4=?
Answer is :2 (5a + 2)
5 0
3 years ago
Help please. It's be thanks. ​
inessss [21]

Answer:

your answer is choice a

Step-by-step explanation:

because the one line passes the x-axis at -3.5 and the other line crosses the x-axis at 3. then you have another line that crosses the y-axis at 2

7 0
4 years ago
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