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4 years ago

Write a question that matches this equation. 45 – n = 15

2 answers:

8 0

Hey there :)

45 - n = 15

Here are few examples:
· The difference between 45 and a number gives 15. What is the number?
· A number less than 45 gives 15. What is the number?
· 45 decreased by a number gives the difference 15. What is the number?
· 15 papers were left unused out of 45 papers. How many papers were used?
· Ray had $45 and he bought some grocery. He was given a change of $15. How much money did he use?

Archy [21]4 years ago

6 0

There were 45 birds on the field , when some of them flew away, only 15 left.
How many birds flew away?

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Stefano needed to change the size of one of the signboards describing an artist's work. Using a scale factor, he created a new s

gregori [183]

Answer:

The less sign looks like a weird L the greater sign looks like a backwards L the equal sign means the two sides are equal. I hope this is the answer you were looking for

Step-by-step explanation:

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4 years ago

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MArishka [77]

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6 0

3 years ago

Read 2 more answers

Solve for x ax-bx/x+c = d, if a =/b+d

erica [24]

Answer:

dc/a-b-d

Step-by-step explanation:

ax – bx = d

x + c

Multiply both sides by x + c

ax – bx

(x + c) = d(x + c)

x + c

Simplify

ax – bx

(x+c): ax – bx

x + c

ax – bx = d(x+c)

Expand d(x+c): dx + cd

ax — bx = dx + cd

Subtract dx from both sides

ax – bx – dx = dx + cd – dx

Simplify

ax – bx – dx = cd

Factor ax – bx – dx: x(a – b – d)

x(a - b- d) = cd

Divide both sides by a – b – d; a + b + d

x(a – b - d) cd

a + b + d

a - b - d

a – b-d

Simplify

X =dc/a-b-d

7 0

3 years ago

Determine whether the systems have one solution, no solution, or infinitely many solutions

Lerok [7]

Answer:

First system: no solution

Second system: one solution

Third system: one solution

Fourth system: infinite solutions

Fifth system: no solution

Step-by-step explanation:

First system: 3x-2y=3; 6x-4y=1

From the first equation: y = (3x - 3)/2

Using this value of y in the second equation:

6x - 6x + 6 = 1

6 = 1 -> System has no solution

Second system: 3x-5y=8; 5x-3y=2

From the first equation: x = (8 + 5y)/3

Using this value of x in the second equation:

5*(8 + 5y) - 9y = 6

40 + 25y - 9y = 6

16y = -34 -> y = -2.125

x = (8 - 5*2.125)/3 = -0.875

This system has one solution

Third system: 3x-2y=8; 4x-3y=1

From the first equation: x = (8 + 2y)/3

Using this value of x in the second equation:

4*(8 + 2y) - 9y = 3

32 + 8y - 9y = 6

y = 26

x = (8 + 2*26)/3 = 20

This system has one solution

Fourth system: 3x-6y=3; 2x-4y=2

From the first equation: x = 1 + 2y

Using this value of x in the second equation:

2*(1 + 2y) - 4y = 2

2 + 4y - 4y = 2

2 = 2

This system has infinite solutions

Fifth system: 3x-4y=2; 6x-8y=1

From the first equation: x = (2 + 4y)/3

Using this value of x in the second equation:

2*(2 + 4y) - 8y = 1

4 + 8y - 8y = 2

4 = 2

This system has no solution

5 0

3 years ago

Use the polynomial remainder theorem to find f(-4) for f(x)=2x4+7x3−8x2−21x+7<br> f(-4) = ______

LekaFEV [45]

Answer: 39

Step-by-step explanation: you have to plug in -4 into each x so that would be f(-4)=2(-4)(2)+7(-4)(3)-8(-4)(2)-21(-4)+7= 39

3 0

2 years ago