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egoroff_w [7]
3 years ago
15

Alma reasoned that adding a rational number with an irrational number would give you a rational number. is alma correct? explain

your reasoning using words and numbers.
Mathematics
2 answers:
lawyer [7]3 years ago
7 0
That is not correct. Rational plus an irrational gives an irrational.

For example 3 + √2    is irrational
mr Goodwill [35]3 years ago
5 0

Answer:

Alma is incorrect in her statement.

Step-by-step explanation:

It was given that:

Alma reasoned that adding a rational number with an irrational number would give you a rational number.

she is incorrect as adding an rational number with an irrational number always gives an irrational number.

<u>Example:</u>

4+\sqrt{5} is an irrational number.

Where 4 is an rational number and \sqrt{5} is an irrational number and so adding both of them gives an irrational number.

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Pleas someone help me with this it's my last question
ruslelena [56]

Answer:

we need to find out if the following get x = 2 as a final product

-2(x-4) = 4

-2x + 8 = 4

-2x = -4

x = 2

so it is a solution

26/x = 13

26 = 13x

x = 26/13

x = 2

so it’s a solution

-3.8x = -7.4

x = 7.4/3.8 ≠ 2

you get ≈ 1.95

so it’s not a solution

4(x-1) - 3(x-2) = -8

4x - 4 - 3x + 6 = -8

x + 2 = -8

x = -10

so it’s not a solution

5 0
2 years ago
Read 2 more answers
Eight point zero one divided by 3
zmey [24]

Answer:

2.67

Step-by-step explanation:

This is right trust if not then alright.

5 0
1 year ago
Larisa earns $7 per hour.she worked 40 hours at the regular rate, 3 hours at time and half, and 6 hours at double time.
VARVARA [1.3K]

Answer:

$6.07/hr. if I understand the question properly.  See below.

Step-by-step explanation:

I don't see the question, but will assume we want to find Larisa's base pay.  The $7/hr given is the average for the work sequence noted in the problem.  If this is incorrect, ignore the answer.

==================================

Let x be Larisa's base salary.  We are told, I think, that in one stretch of time Larisa earned an average of $7/hour.  That was composed of:

<u>Hours</u>  <u>Rate($/hr)</u>

  40           x

    3        1.5x

<u>     6    </u>     2x

  49

Her total income over this period would be:

40x +3(1.5x) + 6(2x)  [The hours worked times the pay rate for each period]

Her average income per hour would be:

(40x +3(1.5x) + 6(2x))/49

which we are told is $7/hr.

(40x +3(1.5x) + 6(2x))/49 = 7

40x + 4.5x + 12x = 343

56.5x = 343

x = $6.07/hr

6 0
1 year ago
A. -5<br> B. 5<br> C. -2<br> D. 3
Anna71 [15]

Answer:

\textsf {C. -2}

Step-by-step explanation:

\textsf{In the equation y = mx + b, m is the slope and} \\\textsf{b is the value of the y-intercept.}

\textsf {The line has a y-intercept at (0, -2), hence b = -2.}

5 0
2 years ago
Suppose a spherical balloon grows in such a way that after t seconds, its volume is V = 4 sqrt(t) cm3.
chubhunter [2.5K]
The volume at time <span>t = 25 seconds
since </span><span> V = 4 sqrt(t) cm3, 
 V(5)= 4*</span><span>sqrt(25)cm^3=4*5=20cm^3</span>
3 0
3 years ago
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