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2 years ago

What is the number?

Mathematics

2 answers:

Korvikt [17]2 years ago

5 0

Step-by-step explanation:

the number is then

x.y

y = x + 1

x + y = 7

using the first equation as identity in the second equation :

x + x + 1 = 7

2x = 6

x = 3

and therefore

y = x + 1 = 3 + 1 = 4

so, the number is 3.4

kotegsom [21]2 years ago

3 0

Answer:

3 and 4

Step-by-step explanation:

3 and 4 added up is 7,4 is one number mor than 3

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Xavier has $23.50 in his savings account. He deposits $35 every week. His mother also deposits $20 into the account every time

maria [59]

Answer:

Part A: a coefficient is either 20 or 35, both work. A variable is c or w, again either work. The constant is 23.50.

Part B: He will have $503.50

Part C: The coefficient would change, because the amount per car changes, not the amount of cars.

Step-by-step explanation:

A coefficient goes in front of the variable (which is the letter, usually shown as x). The constant is a number with no variable attached.

We replace c with 20, and w with 12, giving us 20(3)+35(12)+23.50 for our equation. After multiplying, we come up with 60+420+23.50, which equals 503.50.

8 0

3 years ago

What are the domain and range of the inequality y < sqrt x+3+1

love history [14]

Given:

The inequality is:

$y$

To find:

The domain and range of the given inequality.

Solution:

We have,

$y$

The related equation is:

$y=\sqrt{x+3}+1$

This equation is defined if:

$x+3\geq 0$

$x\geq -3$

In the given inequality, the sign of inequality is <, it means the points on the boundary line are not included in the solution set. Thus, -3 is not included in the domain.

So, the domain of the given inequality is x>-3.

We know that,

$\sqrt{x+3}\geq 0$