All categories

2 years ago

Is Frieda’s work correct? Explain how she can check her solution.

Mathematics

2 answers:

lyudmila [28]2 years ago

7 0

Answer:

Frieda's work is correct.

Step-by-step explanation:

z+22= 64 can also be z= 64-22

64-22= 42

Meaning, z= 42

42+22-22= 64-22

42= 42

Mandarinka [93]2 years ago

3 0

Answer:

by substitution

Step-by-step explanation:

To check if the solution to an equation is valid

Substitute the solution into the equation and if both sides agree then the solution is correct.

left side = z + 22 = 42 + 22 = 64 = right side

Hence z = 42 is the correct solution

You might be interested in

What is a reasonable estimate for the solution? O (1,-3/4) O (-3/4,1) O (-1,3/4) O (3/4,-1)

Zina [86]

Answer:

See Explanation

Step-by-step explanation:

Your question is incomplete, as the equations or graph or table(s) were not given.

However, I'll give a general way of solving this.

Take for instance, the equations are:

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

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

To do this, we start by equating both equations.

$y = y$

i.e.

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

Collect Like Terms

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

Take LCM

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

$\frac{2x}{3}= \frac{1}{2}$

Cross Multiply

$2x * 2 = 3 * 1$

$4x = 3$

Make x the subject

$x = \frac{3}{4}$

Substitute 3/4 for x in $y = \frac{4}{3}x - 1$

$y = \frac{4}{3} * \frac{3}{4} - 1$

$y = 1 - 1$

$y = 0$

Hence:

$(x,y) = (\frac{3}{4},0)$

6 0

2 years ago

Please help with calculations!

ASHA 777 [7]

Resumen de primeros 4 años en Medicina (bioquimica, geneticas, salud publica, ética, etc)

Save Med Esencial Ciencias Básicas - Inglés- For Later

Save

Embed

RELATED TITLES

Carousel Next

6 0

3 years ago

Lines a and b are parallel.<br><br><br><br> What is the measure of angle m?

Arisa [49]

Answer: 55 degrees

Step-by-step explanation:

180-125=55

125 and m make a half a turn which equals 180

4 0

2 years ago

How can we write y + 8x = 50 in Slope Intercept form? What is the first step?

meriva

Answer:

subtract 8x from both sides

Step-by-step explanation:

this is the first step

6 0

2 years ago

Read 2 more answers

Please answer this !!!

denis-greek [22]

Answer:

to do this we have to divide 43 by 83

0.51807228915

so the frequency is about 51.8%

8 0

2 years ago