1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
scoray [572]
3 years ago
10

Find the perimeter of the triangle or rectangle. The sides of each triangle are equal in length. Could you help with 16 and 18?

Mathematics
1 answer:
Whitepunk [10]3 years ago
8 0
16. 9

Since each side are congruent, you set the two sides to each other

7x-12=3x

Subtract 7x from both sides

-12=-4x

Divide -4 from both sides

3=x

3+3+3=9

18. 28

2x-3=3x-10

Add 10 on both sides

2x+7=3x

Subtract 2x on both sides

7=x

7+7+7+7=28
You might be interested in
Substitute the values for a, b, and c into b2 – 4ac to determine the discriminant. Which quadratic equations will have two real
hoa [83]

Answer: 0=2x^2-7x-9\\0=4x^2-3x-1\\0=x^2-2x-8


Step-by-step explanation:

We know that the standard quadratic equation is  ax^2+bx+c=0

Let's compare all the given equation to it and , find discriminant.

1. a=2, b= -7, c=-9

b^2-4ac=(-7)^2-4(2)(-9)=49+72>0

So it has 2 real number solutions.

2. a=1, b=-4, c=4

b^2-4ac=(-4)^2-4(1)(4)=16-16=0

So it has only 1 real number solution.

3. a=4, b=-3, c=-1

b^2-4ac=(-3)^2-4(4)(-1)=9+16=25>0

So it has 2 real number solutions.

4. a=1, b=-2, c=-8

b^2-4ac=(-2)^2-4(1)(-8)=4+32=36>0

So it has 2 real number solutions.

5. a=3, b=5, c=3

b^2-4ac=(5)^2-4(3)(3)=25-36=-9

Thus it does not has real solutions.



5 0
3 years ago
Read 2 more answers
…………………………………………………………………………………………………………………….…………………
ale4655 [162]
We can split this up into 3 rectangles.  2 vertical ones (8 x 3) and one horizontal one in the middle (5 x (8 - 5)

8 x 3 = 24
24 x 2 = 48

5 x (8-5) = 5 x 3 = 15

now add 48 + 15 = 63 cm^2
6 0
3 years ago
5 positive integers are arranged in ascending order, as follows:
Helga [31]
The answer is: 10.

Explanation: The numbers are in order by the median/lowest to highest so in that case X wouldn't be 7 because the X would have been next to the 7 not on the other side of the 10.
4 0
2 years ago
Help? I cannot get my head around it.
sergejj [24]

Answer:

60cm³

Step-by-step explanation:

8 0
2 years ago
Which expression gives the same value as 3 + 5(x + 2) − 4 when you substitute x = 3 and x = 4?
slamgirl [31]
Your answer is C.
Hope this helps.
8 0
2 years ago
Read 2 more answers
Other questions:
  • WILL GIVE A BRAINLIEST IF UR 100% RIGHT PLEASE HELP!!
    5·1 answer
  • Leah orders 3 books for $10 each and 5 video games for $10 each in one shipment.
    9·2 answers
  • Best answer gets brainliest!<br><br> What are some equivalent expressions of 6(m + 2 + 7m)?
    6·2 answers
  • Fill in the blank j,l,I,j,h,h,g,_,f,d
    6·2 answers
  • What is the measurement of G?
    15·1 answer
  • Jordan received 9 text messages last week.She received 3 times more text message this week than last week. How many text message
    14·2 answers
  • The area of an equilateral triangle is given by A =3^1/2/4s^2. Find the length of the side s of an equilateral triangle with an
    6·1 answer
  • A girl is exactly one yard tall and her sister is 1/3 of a yard taller. how many total inches tall are they added together.
    5·2 answers
  • The question is on the image<br>(explain each step)​
    6·2 answers
  • 3.6 - 1.24 is equal to what?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!