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natali 33 [55]
3 years ago
15

Help me plz and thank you

Mathematics
1 answer:
Kay [80]3 years ago
3 0
The second one - 6/21
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Write an algebraic expression for the phrase "thirty less than the product of a number y and four".
zzz [600]

Answer:

30-(y*4)

Step-by-step explanation:

replace thirty with 30. less than is - (minus). the product of a number y and four. replace four with 4. the product is the answer of the multiplication problem. so the multiplication problem here would be y*4. so the full answer is

30-(y*4)

8 0
3 years ago
Read 2 more answers
Two trains leave New York at the same time heading in opposite directions. Train A travels at 4/5 the speed of train one. After
grandymaker [24]
<h3>Answer:  </h3><h3>speed of train A = 44 mph</h3>

=============================================

Work Shown:

x = speed of train A

y = speed of train B

"train A travels 4/5 the speed of train B" (I'm assuming "train one" is supposed to read "train B"). So this means x = (4/5)y

distance = rate*time

d = x*7

d = (4/5)y*7 = (28/5)y represents the distance train A travels

d = y*7 = 7y represents the distance train B travels

summing those distances will give us 693

(28/5)y + 7y = 693

5*(  (28/5)y + 7y ) = 5*693

28y + 35y = 3465

63y = 3465

y = 3465/63

y = 55

Train B's speed is 55 mph

4/5 of that is (4/5)y = (4/5)*55 = 4*11 = 44 mph

Train A's speed is 44 mph

8 0
3 years ago
Solve the equation. 3 = n + 4 Question 3 options: 7 1 -1 12
zysi [14]

Hey!

------------------------------------------------

Steps To Solve:

~Subtract n to both sides

3 - n = n + 4 - n

~Simplify

3 - n = 4

~Subtract 3 to both sides

3 - n - 3 = 3 - 4

~Simplify

n = -1

------------------------------------------------

Answer:

\large\boxed{n~=~-1}

------------------------------------------------

Hope This Helped! Good Luck!

6 0
3 years ago
Shaquira is baking cookies to put in packages for a fundraiser. Shakira has made 86 chocolate chip cookies and 42 sugar cookies.
In-s [12.5K]

Answer:

  2

Step-by-step explanation:

The only common factor of the given numbers is 2.

Shaquira can make 2 packages, each containing 43 chocolate chip cookies and 21 sugar cookies.

3 0
3 years ago
Which statement best explains whether the table represents a linear or nonlinear function?
dalvyx [7]

Answer:

C

Step-by-step explanation:

7 0
3 years ago
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