All categories

4 years ago

What expression is equivalent to -19 -11

Mathematics

1 answer:

exis [7]4 years ago

6 0

Answer:

-30

Step-by-step explanation:

-19 - 11 = -30

Subtracting from a negative will always increase the negative value.

Ex. -10 - 11 = -21

You might be interested in

Need answer badly please

Pani-rosa [81]

Answer:

i believe its 37.7

Step-by-step explanation:

5 0

3 years ago

Find two numbers witha sum of 20 and a difference of 14

bixtya [17]

from the given equation

X+Y=20-->i

X-Y=14--->ii

add eq i and eq ii

2x=34

x=17

putting the value of x=17 in eq i

17+y=20

then y = 3 so the right answer is

17 and 3

6 0

4 years ago

Why are there two solutions for the equation |6 + y| = 2? Explain.

GaryK [48]

$Solution, \left|6+y\right|=2\quad :\quad y=-8\quad \mathrm{or}\quad \:y=-4$

$Steps:$

$|f\left(y\right)|=a\quad \Rightarrow \:f\left(y\right)=-a\quad \mathrm{or}\quad \:f\left(y\right)=a, 6+y=-2\quad \quad \mathrm{or}\quad \:\quad \:6+y=2$

$6+y=-2\quad :\quad y=-8,\\6+y=-2,\\\mathrm{Subtract\:}6\mathrm{\:from\:both\:sides}, 6+y-6=-2-6,\\\mathrm{Simplify}, y=-8$

$6+y=2\quad :\quad y=-4,\\6+y=2,\\\mathrm{Subtract\:}6\mathrm{\:from\:both\:sides},6+y-6=2-6\\\mathrm{Simplify},y=-4$

$\mathrm{Combine\:the\:ranges}, y=-8\quad \mathrm{or}\quad \:y=-4$

$\mathrm{The\:Correct\:Answer\:is\:Because\:of\:the\:absolute\:value,\:It\:could\:be\:Positive\:or\:negative.}$

$\mathrm{Hope\:This\:Helps!!!}$

$\mathrm{-Austint1414}$

7 0

4 years ago

Solve using substitution <br> 7x-9y=-9<br> X=-9

Inessa05 [86]

Answer:

y=6

x=6.42

Step-by-step explanation:

7(-9)+9y=-9

-63+9y=-9

+63 +63

9y/9=54/9

y=6

7x-9(6)=-9

7x-54=-9

+54 +54

7x/7=45/7

x=6.42

3 0

4 years ago

Math Help Please will give brainliest! Dont answer if not sure.

leva [86]

First you find the area of the square which is 8²=64 than you find the area of a circle using the formula πr² you get 201.06 and divide it by 4 because you only need the quarter and you get 50.26 the last step is to add the two areas together and you get 64+50.26=114.2

6 0

3 years ago