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3 years ago

Please answer correctly !!!! Will mark brainliest !!!!!!!!!

Mathematics

1 answer:

Burka [1]3 years ago

8 0

Answer:

Area = l x w

Area = (x + 1)(x + 7)

Area = x² + 7x + x + 7

Area = x² + 8x + 7

Step-by-step explanation:

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L 5.2.3 Quiz: Two-Variable Systems: Substitution

Misha Larkins [42]

Answer:

We get x=3 and y=21

The ordered pair will be: (3,21)

Step-by-step explanation:

We need to use the substitution method to solve the system of equations.

$y = 10x-9\\y = x + 18$

For substitution method we substitute the value of x or y from one equation to other.

Let:

$y = 10x-9--eq(1)\\y = x + 18--eq(2)$

Putting value of y from equation 2 into equation 1

$y=10x-9\\Put\:y=x+18\\x+18=10x-9\\x-10x=-9-18\\-9x=-27\\x=\frac{-27}{-9}\\x=3$

So, we get value of x=3

Now, for finding value of y, We substitute the value of x

Find value of x from equation 2

$y=x+18\\x=y-18$

Now, putting value of x in equation 1

$y=10x-9\\Put\:x=y-18\\y=10(y-18)-9\\y=10y-180-9\\y-10y=-189\\-9y=-189\\y=\frac{-189}{-9}\\y=21$

So, we get value of y=21

So, We get x=3 and y=21

The ordered pair will be: (3,21)

6 0

2 years ago

Starla and Lewis start saving money every month. Starla has an initial balance of $100, and she deposits $15 every month in her

seraphim [82]

Answer:

D. Starla and Lewis will have the same balance in their accounts after 7 months.

5 0

2 years ago

After a lesson on exponents, Tia went home and said to her mom " I learned that 10 to the 4th power is the same as 40,000." She

Burka [1]

Answer:

The answer is "10,000".

Step-by-step explanation:

In the 10^4 can be written as 10 exponents 4, which is not equal to 40,000. Tia's opinion was incorrect because the exponential shows how much they multiply that base number.

Let's explain :

$\to 10^4 = 10 \times 10 \times 10 \times 10 \\$

$=10,000$

5 0

3 years ago

Find an ordered pair (x, y) that is a solution to the equation.<br> 2x-y=9

Shalnov [3]

(0,-9) or (1,-7) or (2,-5) either one would be correct

3 0

2 years ago

The scale of a map is 1:1,000,000. What are the real distances between two points if the distance between them on this map is: 1

snow_lady [41]

Answer:

Step-by-step explanation:

Scale= 1:1,000,000

Scaled distance = 1.8 dm

Actual distance = 1.8*1,000,000 = 1,800,000 dm

3 0

2 years ago