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Tanzania [10]
3 years ago
13

How do you solve this question?

Mathematics
1 answer:
dezoksy [38]3 years ago
8 0

What is the x interval??

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Given triangle ABC with sides AB = 3x + 4 , BC = 2x + 5 , and AC = 4x , determine the values of x such that triangle ABC exists
Jlenok [28]

Answer:

  x > 1/5

Step-by-step explanation:

All of these three triangle inequalities must be satisfied:

  AB +BC > AC

  BC +CA > BA

  CA +AB > CB

___

Taking these one at a time, we have ...

  AB +BC > AC

  3x +4 + 2x +5 > 4x

  x +9 > 0 . . . . . subtract 4x

  x > -9

__

  BC +CA > BA

  2x +5 + 4x > 3x +4

  3x > -1 . . . . . . subtract 3x+5

  x > -1/3 . . . . . divide by 3

__

  CA + AB > CB

  4x + 3x +4 > 2x +5

  5x > 1 . . . . . . subtract 2x+4

  x > 1/5

___

The only values of x that satisfy all of these inequalities are those such that ...

  x > 1/5

8 0
3 years ago
Find the area of the rectangle below by multiplying its length and width.
wariber [46]

Hello!

When multiply binomials together, we should use the FOIL method.

The FOIL method is an acronym for First, Outer, Inner, and Last.

First, let's set up the expression.

(7x - 1)(3x - 2)

Now, we can multiply in accordance with the FOIL method.

First: 7x · 3x = 21x²

Outer: 7x · -2 = -14x

Inner: -1 · 3x = -3x

Last: -1 · -2 = 2

Now, we simplify the inner terms.

21x² - 14x - 3x + 2

21x² - 17x + 2

Therefore, the area of the rectangle is 21x² - 17x + 2.

8 0
3 years ago
Which of the following purchases shows the LEAST expensive unit price?
seraphim [82]

Step-by-step explanation:

9 apples for $4.23

Thats the answer

7 0
3 years ago
Question 1
Elina [12.6K]

The salesperson would earn $800 as gross base paycheck

How many hours of did the salesperson achieve?

The salesperson only worked 40 hours of normal time and there is no overtime, which means that the hourly rate remains $10.00 base salary

In other words, in determining the biweekly pay of the salesperson, we would consider the number of hours in a week, the number of weeks payment is made for and the hourly rate

biweekly gross paycheck=number of weeks*hours per week* hourly rate

number of weeks=2

hours per week=40

hourly rate=$10.00

biweekly gross paycheck=2*40*$10.00

biweekly gross paycheck=$800.00

The biweekly gross paycheck of the sales person is $800,option is the most appropriate

Find out more about 40-hour week on:brainly.com/question/7695086

#SPJ4

3 0
1 year ago
A triangle has two sides of lengths 4 and 7. What value could the length of
Tema [17]

Answer:

B. 5

D. 9

F. 7

Step-by-step explanation:

A triangle has sides a,b and c:

And a < b+c  , b < a+c and c < b+a

Here, a = 4 and b = 7

Find c?

So, 4 < 7+c , 7 < 4+c and c < 4+7=11

A. 11    False, it doesn't satisfies inequality third

B. 5   True

C. 17   False, it doesn't satisfies inequality third

D. 9   True

E. 3   Not true it doesn't satisfies second inequality

F. 7   True

3 0
3 years ago
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