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
12345 [234]
3 years ago
6

In triangle rst, rs=x+7, rt=2x-3, and st=x+7. If the perimeter is 32, find the value of x and classify the triangle by its sides

.
Mathematics
2 answers:
lana66690 [7]3 years ago
5 0

Answer:

x = 5.25 and it is an isosceles triangle.

Step-by-step explanation:

The perimeter of a figure it the measure of all its sides added up.

Therefore RS+RT+ST=32

By substitution:

(x+7)+(2x-3)+(x+7)=32

Combine like terms and add:

4x+11=32

Subtract 11

4x=21

Divide 4

x=5.25

After substituting the value back in, we get that RS=12.25, RT=7.5, and ST=12.25

In an isosceles triangle, two sides have the same measure.

x = 5.25 and it is an isosceles triangle.

olya-2409 [2.1K]3 years ago
5 0
X=5.25 it’s a isosceles Triangle
You might be interested in
A=L times W
Dovator [93]
A= 30ft, because you only have to multiply LxW= A that is equal to 2x15=30ft
8 0
3 years ago
Simplify the expressions
4vir4ik [10]

Answer:

1) 2(2x+3)

2) 2x+4

3) - X + 4

4) 9x - 2

5) 5x−2

6) - 12x - 17

7) - 15x + 11

8) 3x/4

9) - 4x + 7

10) 4x-26/2

11) - 8x + 20.8

12) x - 6

8 0
3 years ago
A study found that a 95% confidence interval for the mean μ of a particular population was computed from a random sample of 1200
kotykmax [81]

Answer:

95% confidence interval for the mean μ is (6,14)

The Population mean μ lies between ( 6, 14 )

Step-by-step explanation:

<u><em>Explanation</em></u>:-

Given random sample 'n' = 1200

95% confidence interval for the mean μ is determined by

        (x^{-} -Z_{\alpha } \frac{S.D}{\sqrt{n} } , x^{-} +Z_{\alpha } \frac{S.D}{\sqrt{n} } )

Level of significance = 95% 0r 0.05

Z₀.₀₅ = 1.96

   (x^{-} -Z_{\alpha } \frac{S.D}{\sqrt{n} } , x^{-} +Z_{\alpha } \frac{S.D}{\sqrt{n} } ) = 10 ± 4

Mean of the small sample = 10

95% of confidence intervals are

                         ( 10 ±4 )

                  ( 10 -4 , 10+4)

                  ( 6 , 14 )

95% confidence interval for the mean μ lies between ( 6, 14 )

8 0
3 years ago
Which represents where f(x) = g(x)?
son4ous [18]

Answer:

Option (1)

Step-by-step explanation:

Two functions 'f' and 'g' have been graphed in the picture attached.

Both the functions will be equal at the points where the values of these functions are equal.

Those points are the point of intersection of both the functions on the given graph.

At x = -4,

f(-4) = g(-4) = 4

At x = 0,

f(0) = g(0) = 4

Therefore, Option (1) will be the answer.

5 0
3 years ago
If a = -2, b = -6, c = -4, and d = -3, evaluate the following expressions.
abruzzese [7]
It’s Has to be B because if you had the negative numbers you get -12
6 0
3 years ago
Other questions:
  • Which function in vertex from is equivalent to f(x)=x2+8-16x
    7·2 answers
  • An object is launched at 25 m/s from a height of 80 m. The equation for the height (h) in terms of time (t) is given by h(t)= -4
    10·1 answer
  • 1.Two more than the quotient of a number and 6 is equal to 7
    9·1 answer
  • Simplify 8 + 24 divided by 2^3 <br> A) 4<br> B) 11<br> C) 12<br> D) 48
    11·2 answers
  • Quick I need help 23 and 24 easy seventh grade math
    12·1 answer
  • Three inches of snow fell on Monday and 5 inches fell on Wednesday. Which number is the additive inverse of the amount of snow t
    11·1 answer
  • 9 is a factor of which number? <br> 12<br> 18<br> 23<br> 28
    9·1 answer
  • The ratio f sugar to flour in a cake recipe is 3 to 5. Marcus s going to follow the recipe to make a large sheetcake. He starts
    15·1 answer
  • Students were asked how many hours during the
    5·2 answers
  • -2
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!