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kondor19780726 [428]
3 years ago
15

Evaluate the expression for the given value 11 + r r = 7

Mathematics
2 answers:
Cerrena [4.2K]3 years ago
6 0

11+r  =7

r=-4

allsm [11]3 years ago
3 0
The truee of expression is -4
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melina walked 9/12 mile day dor 5 days. what was the total distance in 32 miles, she walked in the 5 days?
Step2247 [10]
9/12 times 5 is 45/ 60 which is equal to 3/4 of a mile. I’m afraid I didn’t understand the question but I hope this helps.
7 0
3 years ago
What is 2 1/2 divided by 1/3 {pls hurry the teacher is not letting us use brainly}
katovenus [111]

Answer:

7 1/2

Step-by-step explanation:

2 1/2 ÷ 1/3

Change to an improper fraction

(2*1+2)/2 ÷ 1/3

5/2 ÷1/3

Copy dot flip

5/2 * 3/1

15/2

Change to a mixed number

7 1/2

8 0
3 years ago
What type of system is the following set of equations?
iVinArrow [24]
-3x+y=-2 \\
y-4=-6x \ \ \ |\times (-1) \\ \\
-3x+y=-2 \\
\underline{-y+4=6x} \\
-3x+y-y+4=6x-2 \\
-3x+4=6x-2 \\
-3x-6x=-2-4 \\
-9x=-6 \\
x=\frac{-6}{-9} \\
x=\frac{2}{3} \\ \\
y-4=-6 \times \frac{2}{3} \\
y-4=-4 \\
y=-4+4 \\
y=0 \\ \\
(x,y)=(\frac{2}{3},0)

The system has one solution so it's A. consistent and independent.
7 0
3 years ago
PleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeSimplify -2^3
mars1129 [50]

Answer:

Therefore,

(-2)^{3}=-8

Step-by-step explanation:

Simplify

-2^3

(-2)^{3}

It is read as negative 2 raised to the power three,

also it is the cube of negative 2

we know that a^{3}given as

a^{3}=a\times a\times a

so for negative a i.e -a

(-a)^{3}=-a\times -a\times -a

substituting a = 2 we get

(-2)^{3}=-2\times -2\times -2

negative sign multiplied by odd number of times then the sign remains negative.

Therefore,

(-2)^{3}=-8

5 0
3 years ago
Identify the error by providing a brief description. Then, complete the problem correct
Ipatiy [6.2K]

Answer:

True answer: -24

Step-by-step explanation:

<em><u>Showing the error</u></em>

-16-2(-2) – 12   First you need to multiply

8(-2) - 12   The error here is that the wrong numbers are multiplied together

-16-12    Add the negatives together

-28​  Your answer (the incorrect one)

<em><u /></em>

<em><u>The correct way of solving it</u></em>

-16 -2(-2) - 12  Multiply into the parenthesis

-16 + 4 -12   Add the first two numbers

-12 - 12  Add the numbers together

-24  The answer

8 0
3 years ago
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