If y = 5x-3 find the value of y when x = 0

Answers

Answer 1

Answer: I'll teach you a little trick that my math teacher taught me: Take your finger and cover up 5x (because if x=0, then anything times zero is zero and basically goes away). What you have uncovered is your answer. y=-3

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Use the system of equations. Please show your steps and how you solved it!3x+3y=15
3x=6y=-12

Please Help!

Answers

1. 3x+3y=15
-3y = -3y (subtract 3y from both sides)
3x = 15-3y
----------------------
3 = 3 3 (divide each number by 3)
x = 5- y

Willa is building birdhouses. Each side of the birdhouse will need 9 nails. How many nails does Willa need for each birdhouse? There are 7 sides on the birdhouse. If Willa uses only 7 nails on each side, how will the total number of nails she uses change?

Answers

The total number of nails will decrease by 14 when Willa will use 7 nails on each side.

Step-by-step explanation:

Sides of one birdhouse = 7

Nails used on each side = 9

Nails used on one birdhouse = No. of sides * Nails used for each side

Nails used on one birdhouse = 7*9 = 63 nails

If she uses 7 nails on each side, then the number of nails used on each birdhouse will be;

No. of nails = 7*7 = 49 nails

Difference = Old value - New value

Difference = 63-49 = 14

The total number of nails will decrease by 14 when Willa will use 7 nails on each side.

Keywords: multiplication, subtraction

Learn more about subtraction at:

#LearnwithBrainly

A 2-liter bottle of water has a mass of 2 kilograms. How many grams is that?

Answers

2000 grams. One kilogram is one thousand grams, so you would have to multiply 2 kg by 1000 to find the number of grams. The answer is, of course, 2000 g.

Which equation is represented by the table? x y (x, y)
0 –1 (0, –1)
1 4 (1, 4)
2 9 (2, 9)

A.
y = 5x – 1

B.
y = –3x + 3

C.
y = 3x – 4

D.
y = 3x + 3

Answers

i would say C.
y= 3x - 4

PLEASE HELP WILL MARK BRAINLIEST

Answers

Answer:

You may or may not need to include the units.

A = 18x - 18

P = 6x + 6

Graph is attached below. (2, 18)

Step-by-step explanation:

Substitute the information we need, "l" and "w", into the formulas.

l is for length, 6cm.

w is for width, (3x - 3)cm.

Use the formula for area of a rectangle.

A = lw

A = (6)(3x-3)cm²

A = (18x - 18)cm² or 18x - 18

Use the formula for perimeter of a rectangle.

P = 2(l + w)

P = 2(6 + (3x - 3))cm

P = 2(3x + 3)cm

P = (6x + 6)cm or 6x + 6

Linear equations are written in the form y = mx + b, so we do not need to factor or further simplify the formulas.

To graph, first turn the "m" value into a fraction form.

8 -> 8/1

6 -> 6/1

You need two points to graph each line.

For each equation, the first point is on the y-axis at the "b" value. Then use the "m" in the equation to count the number of units up (numerator) and to the right (denominator).

The solution is (2,18)

What is, 7 3/10+6 1/3+2 7/10?

Answers

7 3/10 + 6 1/3 + 2 7/10

First change them to improper fractions

73/10 + 19/3 + 27/10

now find the common denominator which would be 30

73/10 = 219 /30

19/3 = 190/30

27/10 = 81 /30

now add (219 + 190 + 81) = 490/30

now divide 490 ÷ 30 = 16 1/3

Your answer is 16 1/3

Hope this helps. :)

We are going to add 7 3/10 and 2 7/10 first. $\boxed{\boxed{7 (3)/(10)}}+\boxed{\boxed{2 (7)/(10)}}}=\boxed{\boxed{9 (10)/(10)}}$ . Now we are going to add $\boxed{\boxed{9{ (10)/(10)}}}$ by $\boxed{\boxed{6{ (1)/(3)}}}$ . $\boxed{\boxed{9{ (10*3)/(10*3)}}}=\boxed{\boxed{9{ (30)/(30)}}} \ and \ \boxed{\boxed{6 (1*10)/(3*10)}}}=\boxed{\boxed{6{ (10)/(30)}}}$ . Finnally we add. $\boxed{\boxed{9{ (30)/(30)}}}+{\boxed{\boxed{6{ (10)/(30)}}}=\boxed{\boxed{15 (40)/(30)}}}.$ . Last, but not least we simplify, $\boxed{\boxed{15{ (30:10)/(40:10)}}}=\boxed{\boxed{15 (3)/(4)}}}$ . Therefore, your answer is $\boxed{\boxed{15 (3)/(4)}}}$ . Hoped I helped. :)

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