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2 years ago

I need help with this question plsss

Mathematics

1 answer:

olga55 [171]2 years ago

7 0

Answer: maybe its 6

Step-by-step explanation:

i think its 6 because it has +3 so maybe adding 3+3

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Solve the following equations.

miv72 [106K]

Answer:

Step-by-step explanation:

Use math. Way without the dot

7 0

2 years ago

PLEASE HELP,, MARKING BRAINLIEST!!! Solve for x

Trava [24]

9514 1404 393

Answer:

x = 10

Step-by-step explanation:

The marked sides are proportional, so we have ...

x/8 = (x +5)/12

3x = 2(x +5) . . . . . multiply by 24 to clear fractions

3x = 2x + 10 . . . . . eliminate parentheses

x = 10 . . . . . . . . . . subtract 2x

_____

Alternate solution

We observe that the difference between the upper segment lengths is ...

(x +5) -(x) = 5

and the difference between the lower segment lengths is ...

12 -8 = 4

This means the upper segment lengths are 5/4 times as long as the lower segments. Then ...

x = (5/4)(8) = 10

4 0

2 years ago

Question 14

Reil [10]

Answer:

The system of equations has a one unique solution

Step-by-step explanation:

To quickly determine the number of solutions of a linear system of equations, we need to express each of the equations in slope-intercept form, so we can compare their slopes, and decide:

1) if they intersect at a unique point (when the slopes are different) thus giving a one solution, or

2) if the slopes have the exact same value giving parallel lines (with no intersections, and the y-intercept is different so there is no solution), or

3) if there is an infinite number of solutions (both lines are exactly the same, that is same slope and same y-intercept)

So we write them in slope -intercept form:

First equation:

$6x+y=-1\\y=-6x-1$

second equation:

$-6x-4y=4\\-6x=4y+4\\-6x-4=4y\\y=-\frac{3}{2} x-1$

So we see that their slopes are different (for the first one slope = -6, and for the second one slope= -3/2) and then the lines must intercept in a one unique point. Therefore the system of equations has a one unique solution.

6 0

2 years ago

Which of the following inequalities is correct? -|-4| > |-3| -|1| < -|-5| |-9| > |-12| -|-7| > -|-10|

emmasim [6.3K]

Out of four given inequalities the correct inequality is -|-7| > -|-10|

Solution:

Need to determine which of the given inequality is/are correct from given four options.

lets first understand what is mod of any real number "x" that is |x| means.

|x| = |-x| = absolute value of x ignoring its sign = x

let’s check each option

Option 1:

-|-4| > |-3|

|-4| = 4, So - |-4| = -4

And |-3| = 3

As -4 cannot be greater than 3

Hence inequality -|-4| > |-3| is incorrect.

Option 2:

-|1| < -|-5|

|1| = 1, so - |1| = -1 and |-5| = 5, so -|-5| = -5

As -1 cannot be less than -5 (negative sign)

Hence inequality -|1| < -|-5| is incorrect.

Option 3:

|-9| > |-12|

|-9| = 9 and |-12| = 12

As 9 cannot be greater than 12

Hence inequality |-9| > |-12| is incorrect.

Option 4:

-|-7| > -|-10|

|-7| = 7, so - |-7| = -7 and |-10| = 10, so -|-10| = -10

As -7 is greater that -10 (negative integers).

Hence inequality -|-7| > -|-10| is correct.

5 0

2 years ago

PLEASE!!!!HELP!!!!!!Need HELP!!!!

Rzqust [24]

Answer:

Step-by-step explanation:

f(5) = 0

8 0

2 years ago