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zalisa [80]
2 years ago
12

Бx +7y = -12 5х – 8y = –10

Mathematics
1 answer:
Lesechka [4]2 years ago
4 0

Answer: 32

Step-by-step explanation:

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A picture has an area of 35cm and is 7cm long.An enlargement of the picture is made is 21cm long.Find the area of the enlargemen
marta [7]

Answer: The area of the enlargement is 315cm.

Step-by-step explanation:

If the picture has 35cm as the area and it has a length of 7cm  then we can find the width by dividing the area by the length.

w= 35/7

w =  5      

So in this care the width of the picture in 5cm.

Now is saying that the picture's length has been enlarge or been dilated to 21 cm. To get from 7cm to 21cm you will have to multiply  by 3.  

In this situation, we will have to multiply the original picture's width by 3 to find it enlargement.

w= 5*3 = 15  

The width is 15cm and the length is 21cm so multiply them to find the area.

A = 15 * 21

A = 315cm

6 0
2 years ago
Which of the following is equivalent to the expression below?<br> (5+1) + (7 - 41)
Strike441 [17]

Answer:

-28

Step-by-step explanation:

6+(-34)

6-34= -28 that is the simplified form though the question isnt clear

4 0
3 years ago
2). You are to construct the walls for the storage building that will be 8' high; using the
yulyashka [42]

Answer:28

Step-by-step explanation:

7 0
2 years ago
What is the solution of the equation 2X = 7? Round your answer to the nearest ten-thousand.
Andru [333]

Answer:

x =2.8074

Step-by-step explanation:

2^x = 7

Take the log of each side

log (2^x) = log (7)

We know  log a^b = b log a

x log 2 = log 7

x = log (7) / log 2

x =2.80735

To the nearest tenth thousandth

x =2.8074

4 0
2 years ago
After the Civil War, the era known as Reconstruction began. During this era, the federal government tried to grant rights to for
nikdorinn [45]

Answer:

D.

Step-by-step explanation:

Here is where the answer is mentioned: "After the Civil War, the era known as Reconstruction began. During this era, the federal government tried to grant rights to former slaves and rebuild the South."

8 0
2 years ago
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