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snow_tiger [21]
3 years ago
15

Please help with this my teacher isn't responding!!!

Mathematics
1 answer:
Nady [450]3 years ago
4 0

Answer:

12

Step-by-step explanation:

yes right anwser

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3 years ago
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Solve the system of equations using elimination: -8x-4y=4 and -5x-y=-11.
ziro4ka [17]

The solutions to the given system of equations are x = 4 and y = -9

<h3>Simultaneous linear equations</h3>

From the question, we are to determine the solutions to the given system of equations

The given system of equations are

-8x-4y=4  --------- (1)

-5x-y=-11   --------- (2)

Multiply equation (2) by 4

4 ×[-5x-y=-11 ]

-20x -4y = -44  -------- (3)

Now, subtract equation (3) from equation (1)

-8x -4y = 4  --------- (1)

-(-20x -4y = -44)  -------- (3)

12x = 48

x = 48/12

x = 4

Substitute the value of x into equation (2)

-5x -y = -11

-5(4) -y = -11

-20 -y = -11

-y = -11 + 20

-y = 9

∴ y = -9

Hence, the solutions to the given system of equations are x = 4 and y = -9

Learn more on Simultaneous linear equations here: brainly.com/question/26310043

#SPJ1

6 0
2 years ago
What is the circumference of a circle with a diameter of 9 cm?
Kamila [148]

Answer:

the answer=28.27cm

using formula

c=2πr

d=2r

solving for c

C=πd

=π.9

=28.27

hope it help you

5 0
2 years ago
Prove that the expression A + B - C is equivalent to the expression C - B - A if A = 2x - 1, B = 3x + 1 and C = 5x.
zepelin [54]

Answer:

both are equal is 0

Step-by-step explanation:

After substituting, the answer is 0 to both

3 0
2 years ago
What is the average rate for the mold over the 6 days
Ksju [112]

Answer:

10.5 square millimeter per day

Step-by-step explanation:

First, we need to find the total change in the area over the course of 6 days.

64-1=63

Now, to find the average, we divide it by 6.

63/6= 10.5

8 0
2 years ago
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