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qaws [65]
3 years ago
9

A) Area: b) Perimeter: 13 cm add speaker notes

Mathematics
1 answer:
OLEGan [10]3 years ago
3 0

Answer:

area: 169

perimeter: 52

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Pls pls pls help. This is a a math quiz.
Dmitriy789 [7]

Answer:

Step-by-step explanation:

5 0
2 years ago
WILL GIVE 40 BRAINLY
irina [24]

Answer:

(3,2)

Step-by-step explanation:

The method of variable substitution is a way of solving a system of equations. It involves solving one equation for a variable and then substituting in the expression that represents the value of the solved variable into the other equation. After doing so, one can solve for the unknown variable and then backsolve for the other variable.

y=-2x+8\\y=x-1

In this system, the second equation is already solved for (y), thus one can substitute that expression into the other equation in the system.

x-1 = -2x + 8

Now solve using inverse operations,

x -1 = -2x + 8\\+2x\\\\3x - 1 = 8\\+1\\\\3x =9\\/3\\\\x = 3

Backsolve to find the value of (y), substitute in the value of (x), and solve for the value of (y).

y=x - 1\\

Substitute,

y=(3)-1

Solve,

y=2

Thus, the answer to this system of equations is the following, (3,2).

8 0
2 years ago
Horn Elementary School has 456 students. If there are exactly 24 students in each class, how many classes are there in the schoo
Ivan

Answer: There are 19 classes

Step-by-step explanation:

divide the total amount amount of students by the amount of students in each class

3 0
2 years ago
Read 2 more answers
Find (hog)(-2)<br> h(x) = 3x<br> g(x) = 4x + 1
LenKa [72]

Answer:

h(-2)=-6

g(2)=-7

Step-by-step explanation:

Just plug 2 in for x and solve the equation.

3 0
3 years ago
The perimeter of the triangle is 40 units.Which of the following equations could be used to find the value of x?
Artyom0805 [142]

Answer:

13x + 112 = 320.

Step-by-step explanation:

The perimeter is the sum of the 3 sides:

1/2 x + 3/8 x + 11 + 3/4 x + 3 = 40

1/2 x + 3/8 x  + 3/4 x + 3 + 11 = 40

1/2 x + 3/8 x  + 3/4 x + 14 = 40

Multiply through by 8 to remove the fractions:

4x + 3x + 6x  + 14 = 40

13x + 112 = 320.

5 0
2 years ago
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