All categories

2 years ago

Arjun solved the equation 7·m=56 His work is shown. What error did Arjun make?

2 answers:

6 0

He multiplied rather than dividing.

$\mathrm{Divide\:both\:sides\:by\:}7 \ \textgreater \ \frac{7m}{7}=\frac{56}{7} \ \textgreater \ Simplify \ \textgreater \ m = 8$

Hope this helps!

AleksAgata [21]2 years ago

5 0

Answer: Multiplyng both sides by 7 instead of dividing both sides by 7.

Step-by-step explanation:

Hi, by analyzing Arjun’s work, the mistake that he made was multiplying by 7 both sides instead of dividing both sides by seven.

The correct way is:

7m = 56

Dividing each both sides by 7

7m/7 = 56/7

m = 8

The real value of m is 8, not 392.

Feel free to ask for more if needed or if you did not understand something.

You might be interested in

A shopkeeper sold a dressing table for 7512.75 at a profit of 19*1/4% What was the cost price.

Katarina [22]

Cp=7512.75×[100÷(100+77÷4)]
=7512.75×(100÷119.25)
=6300
c.p=6300

4 0

2 years ago

When rolling two 6-sided cubes, what are the chances that the sum of the roll will be 7?

IrinaVladis [17]

4+3
2+5
6+1
3 chances of landing a 7.

7 0

3 years ago

PLEASEE HELPP....Simplify the expression using properties of exponents.

Aleks04 [339]

Answer:

Step-by-step explanation:

Using the rule of exponents

$\frac{a^{n} }{a^{m} }$ = $\frac{1}{a^{(m-n)} }$

Given

$\frac{25a^{-5}b^{-8} }{5a^{4}b }$

= $\frac{25}{5}$ × $\frac{a^{-5} }{a^{4} }$ × $\frac{b^{-8} }{b^{1} }$

= 5 × $\frac{1}{a^{(4-(-5))} }$ × $\frac{1}{b^{(1-(-8))} }$

= 5 × $\frac{1}{a^{9} }$ × $\frac{1}{b^{9} }$

= $\frac{5}{a^{9}b^{9} }$ → D

5 0

2 years ago

What smaller angle is coterminal with 573°

Kobotan [32]

The positive coterminal angle is 213° and negative coterminal angle is -147° and -507°

<u>Explanation:</u>

Coterminal angles are two angles that are drawn in the standard position (so their initial sides are on the positive x-axis) and have the same terminal side

In other words, two angles are coterminal when the angles themselves are different, but their sides and vertices are identical.

Another way to describe coterminal angles is that they are two angles in the standard position and one angle is a multiple of 360 degrees larger or smaller than the other. That is, if angle A has a measure of M degrees, then angle B is co-terminal if it measures M +/- 360n, where n = 0, 1, 2, 3, ...

So,

When angle is 573° then the coterminal angle is

573° - 360 (1) = 213°

573° - 360(2) = -147°

573° - 360 (3) = -507°

Therefore, positive coterminal angle is 213° and negative coterminal angle is -147° and -507°

5 0

2 years ago

Line L is perpendicular to a line with slope -5 and passes through (2, -2). Find an equation of line L and write the answer in t

irina [24]

Answer:

y=1x +8

Step-by-step explanation:

y-y1 = m(x-x1)

y+2 = -5(x-2)

y+2 = -5x + 10

y = -5x +8

Now to find line L we have to change the slope because it is perpendicular

y= 1x +8 (The slope is one fifth, but idk

5. to put it, I'm sorry)

4 0

2 years ago