Andre was trying to write 7⁷/ 7⁻³ with a single exponent and wrote 7⁷/ 7⁻³ = 7⁴⁻³ = 71 Explain to Andre what his mistake was and what the answer should be.

Answer:

3. m= -15

4. x= 9

Step-by-step explanation:

3. Cross multiply: -6m=90

Solve: m= -15

4. Cross multiply: 7x+7=10x-20

Solve: x=9

Step-by-step explanation:

Here,

-m=10*9/6

or,-m=90/60

or,-m=15

or,-m=-(-15)

and, m=-15

2

Here,

(x+1)*7=(x-2)*10

or,7x+7=10x-20

or,7+20=3x

or,x=27/3

therefore, x=9ans

Answer:

3/4 x -1

Step-by-step explanation:

sana makatulong

Answer:

Answer:

1.5 or 1 1/2 of a lawn in one hour. about one hour to mow one yard.

Step-by-step explanation:

Answer:

never

Step-by-step explanation:

Positive fractions will be more then one.

8a -1+0.5b

Replace a nd b with the given values:

8(1/4) -1 + 0.5(10)

8 x 1/4 = 2

0.5 x 10 = 5

Now you have:

2 -1 + 5

2-1 = 1 +5 = 6

Answer is 6

Answer:

6

Step-by-step explanation:

Substitute the value of the variable into the expression and simplify.

Answer:

It decreased by 30%

Step-by-step explanation:

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Answer:

A

Step-by-step explanation:

4 (0.5x + 2.5y - 0.7x - 1.3y + 4)  

Use commutative property with like terms 4( 0.5 x - 0.7x + 2.5y - 1.3 y + 4)

Combine like terms 4 (-0.2x + 1.2y + 4)

Use distributive property -0.8x + 4.2y + 16

Answer:

it should be d which is 7.50

Step-by-step explanation:

I know this because the given numbers are close to this answer plus how can it be 4 . If am wrong pls say so

Answer:

-6.3+d> 4 1/2

Step-by-step explanation:

She starts 6.3 miles west of her home. This is denoted by the (-). The store is 4.5 miles east of her home. East would be denoted by a (+). never be exactly 4.5 miles from her home. This would be denoted by a (>). Therefore the answer is: -6.3+d>4 1/2

The store is more than 4.5 miles east of her home meaning that it would never be exactly 4.5 miles from her home. This would be denoted by a (>). Therefore the answer is: -6.3+d>4 1/2

Answer:

2.5 times, 30 people

Step-by-step explanation:

The recipe will be multiplied 2.5 times (3/8 ÷ 1/4). Therefore, it will serve 30 people (12 * 2.5)

Answer:

30

Step-by-step explanation:

Answer:

27

Step-by-step explanation:

Answer:

$27

Step-by-step explanation:

substitute the value of p (price of the package of henna powder) which has been given as $12 and the value of s (price of the squeeze bottle) which has been stated as $3 into the equation from part b).

since the equation is 3(p-5) + 2s

write 12 instead of p, and 3 instead of s.

then solve the equation.

= 3(12-5) + 2(3)

= 3(7) + 2(3)

= 21 + 6

= 27

Answer: 29.5 inches tall.

Step-by-step explanation:

If Eva was 1.5 inches taller than her original height, she would be half of Maria’s height. So, we divide Maria’s height by two to find the height Eva would be if she was 1.5 inches taller.

62 / 2 = 31 inches

Next, to find Eva’s real height, we subtract 1.5 inches from the 31 inches. This is because Eva would only be half Maria’s height IF she was 1.5 inches taller, but she is not, so therefore we can deduct it.

31 - 1.5 = 29.5 inches

Therefore, Eva’s height is 29.5 inches tall. We can prove this, as well.

29.5 + 1.5 = 31 inches

31 * 2 = 62 inches

Therefore, Eva is 29.5 inches tall.

Answer:

x=52 and y=39

Step-by-step explanation:

52 + 39 = 91

52 - 13 = 39

What you would do is make the equation:

91=X+(X-13)

Then, you would solve for X and once you find X, you would subtract 13 from it.

The answers should be 52 and 39.

Answer:

A

Step-by-step explanation:

Answer:

Question A: A

Question B: C

Question C: B

Step-by-step explanation:

Answer:

linear

Step-by-step explanation:

The graph would be linear since it's .05 every minute, which would mean that every minute it would cost .05 --> adding up minutes. The flat fee at the beginning is trying to trick you up, don't get fooled ;)

Answer:

d) 1 1/9

Step-by-step explanation:

hope this helps!!

Answer:

is d trust me

Answer:

The possible number of hours the chemistry club can rent the meeting room is 7 hours.

Step-by-step explanation:

h=hours

19+4h=47

Subtract 19 from both sides of the equation.

4h=28

Divide 4 from both sides of the equation.

h=7

The possible number of hours the chemistry club can rent the meeting room is 7 hours.

Hope this helps :)

Answer:

7 hours

Step-by-step explanation:

There is $47 total dollars. The reservation fee is $19 dollars. Subtract the two:

47-19= 28 dollars

Now the per hour fee is 4 dollars an hour. And you have 28 hours. So divide the two to get maximum hours:

28/4=7 hours

Answer:

In front of the 52, it'll be 52°, that's all I know.

Answer: The answer is B.

Step-by-step explanation:

To figure out, you must first turn the mixed fraction (3 1/2) into an improper fraction (7/2). We can do so by:

3 * 2 = 6

6 + 1 = 7 or 7/2

Next, you follow the rules of KCF: Keep, Change, Flip. Keep the first fraction, Change the sign to its inverse operation, and Flip the second fraction.

Our original equation is 7/2 /(divided by) 3/2 = ?

1. Keep the first fraction

7/2 / 3/2 = 7/2 / 32

2. Change the sign to its inverse operation

7/2 / 3/2 = 7/2 * 3/2

3. Flip the second fraction

7/2 * 3/2 = 7/2 * 2/3

Now, solve.

7/2 * 2/3

7 * 2 / 2 * 3 = 14/6

To make this a proper mixed number, first simplify.

14/6 / 2 = 7/3

Now, figure out how many wholes are in 7/3.

7/3 / 3 = 2 1/3

This is because 2 times 3 is six, and 7 minus 6 equals 1, or 1/3.

Therefore, the answer is 7/3 OR 2 1/3 OR B

Answer:

Step-by-step explanation:

10, 8

-8, -8

Transformation is a method required to resize or change the orientation of a given shape or figure. The required answer is:

Transformation is a method required to resize or change the orientation of a given shape or figure. The types of transformation are translation, reflection, rotation, and dilation.Translation is a method that requires moving every point in a given shape in the same direction and same unit.

Reflection is a method that involves flipping a given figure about a given reference point or line. Rotation is a method that required turning a given figure at an angle about a reference point. Dilation is a method in which the length of the sides of the figure is either increased or decreased.Thus the answers to the question are listed as follows:

For more clarifications on the reflection of a figure, visit: https://brainly.com/question/20840412

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Answer:  [tex]20-\frac{1}{4}x+\frac{4}{3}y[/tex]

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Work Shown:

[tex]P = 2L + 2W\\\\P = 2\left(10-x+\frac{4}{9}y\right) + 2\left(\frac{7}{8}x+\frac{2}{9}y\right)\\\\P = 2\left(10\right)-2x+2\left(\frac{4}{9}y\right) + 2\left(\frac{7}{8}x\right)+2\left(\frac{2}{9}y\right)\\\\[/tex]

[tex]P = 20-2x+\frac{8}{9}y + \frac{14}{8}x+\frac{4}{9}y\\\\P = 20-2x+\frac{8}{9}y + \frac{7}{4}x+\frac{4}{9}y\\\\P = 20+\left(-2x + \frac{7}{4}x\right)+\left(\frac{8}{9}y+\frac{4}{9}y\right)\\\\[/tex]

[tex]P = 20+\left(-\frac{8}{4}x + \frac{7}{4}x\right)+\left(\frac{8}{9}y+\frac{4}{9}y\right)\\\\P = 20+\left(\frac{-8+7}{4}x\right)+\left(\frac{8+4}{9}y\right)\\\\P = 20-\frac{1}{4}x+\frac{12}{9}y\\\\P = 20-\frac{1}{4}x+\frac{4}{3}y\\\\[/tex]

Hi,

49 - 9 = 40

40 - 7 = 33

33 - 5 = 28

28 - 3 = 25

25 - 1 = 24

Explanations :

9-2 = 7

7-2 = 5

5-2 = 3

3-2 = 1

✅(•‿•)

Answer:

49-9=40

40-7=33

33-5=28

28-3=25

25-1=24

Answer:

5) [tex]8k^{5}[/tex]

7)[tex]6y^{2}x[/tex]

9)[tex]\frac{12}{ab}[/tex]

Step-by-step explanation:

Answer: I believe its 5 days.

Step-by-step explanation: Hope this helps you!!!!