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2 years ago

Very easy!! help!! urgent!! its on ratio

Mathematics

1 answer:

masha68 [24]2 years ago

5 0

Answer:

A and B are correct

Step-by-step explanation:

if x:y is 1:3 then x is 1 and y is 3

1/3 of 3 is 1 so A is correct

3/4(1+3) is 3 so B is correct

But

1/4 × 3 is not 1 so C is not correct

3/4 ×1 is not 3 so D isn't correct

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What is the solution to the equation t-15=76

geniusboy [140]

Answer:

T = 91

Step-by-step explanation:

Simplifying

T + -15 = 76

Reorder the terms:

-15 + T = 76

Solving

-15 + T = 76

Solving for variable 'T'.

Move all terms containing T to the left, all other terms to the right.

Add '15' to each side of the equation.

-15 + 15 + T = 76 + 15

Combine like terms: -15 + 15 = 0

0 + T = 76 + 15

T = 76 + 15

Combine like terms: 76 + 15 = 91

T = 91

Simplifying

T = 91

3 0

1 year ago

Read 2 more answers

2(5 + y) = 18 what does y=

jeka94

2(5+y)= 18 than y= 4

5 0

2 years ago

Read 2 more answers

Define mean. Then determine the mean of the following data set (22,18,38,6,24,18)

STALIN [3.7K]

Mean is the average number in the data set.

To get the average we first add all the numbers.

After we add all these numbers we then divide by the number of numbers in the data set.

So we do 22+18+38+6+24+18 which is equal to 126 there are six numbers so we divide 126 by 6. This gives us a mean of 21.

ANOTHER EXAMPLE:

Another example of this is the data set (4,65,7,34,5)

We first add all the numbers and get 115 then we divide by 5 and get 23 as the mean.

8 0

2 years ago

Which description is paired with its correct expression?

a_sh-v [17]

Answer:

Step-by-step explanation:

Hi there! You’re correct.

Twice the difference of nine and a number squared would look like

$2(9-n^2)$

I hope this helped! :)

7 0

2 years ago

AT&T charges $350 to get a plan with them, plus $60 per month. T-Mobile charges a $275 initial fee, plus $80 per month. Writ

larisa86 [58]

Given :

AT&T charges $350 to get a plan with them, plus $60 per month.

T-Mobile charges a $275 initial fee, plus $80 per month.

To Find :

Write an equation or inequality that can be used to determine the number of months it would take for T-Mobile to cost the same or more than AT&T.

Solution :

Money-time relation of plan AT&T :

$M_1 = 60x + 350$

Money-time relation of plan T-Mobile :

$M_2 = 80y + 275$

( Here, x and y are number of months )

Let, after t months would take for T-Mobile to cost the same or more than AT&T.

So, $M_2\ge M_1$

$80t+275 \ge 60t + 350\\\\20t \ge 350 - 275\\\\20t \ge 75\\\\t \ge 3.75$

Hence, this is the required solution.

5 0

3 years ago