6th grade math i mark as brainleist or whatever thats spelled​

Answer:

[tex]\frac{75}{1}+15e^-\cdot \:0.4x=25\quad :\quad x=-\frac{25}{3};\quad \ne \mathrm{True},\:e\ne \:0\quad \left(\mathrm{Decimal}:\quad x=-8.33333\dots \right)[/tex]

Step-by-step explanation:

[tex]\frac{75}{1}+15e^-\cdot \:0.4x=25[/tex]

[tex]\mathrm{Apply\:rule}\:\frac{a}{1}=a[/tex]

[tex]\frac{75}{1}=75[/tex]

[tex]75+15\cdot \:0.4e^-x=25[/tex]

[tex]\mathrm{Multiply\:the\:numbers:}\:15\cdot \:0.4=6[/tex]

[tex]75+6e^-x=25[/tex]

[tex]\mathrm{Subtract\:}75\mathrm{\:from\:both\:sides}[/tex]

[tex]75+6e^-x-75=25-75[/tex]

[tex]\mathrm{Simplify}[/tex]

[tex]6e^-x=-50[/tex]

[tex]\mathrm{Divide\:both\:sides\:by\:}6e^-;\quad \ne \mathrm{True}[/tex]

[tex]\frac{6e^-x}{6e^-}=\frac{-50}{6e^-};\quad \ne \mathrm{True}[/tex]

[tex]\mathrm{Simplify}[/tex]

[tex]e^{ }x=-\frac{25}{3e^-};\quad \ne \mathrm{True}[/tex]

[tex]\mathrm{Divide\:both\:sides\:by\:}e;\quad \ne \mathrm{True},\:e\ne \:0[/tex]

[tex]\frac{e^{ }x}{e}=\frac{-\frac{25}{3e^-}}{e};\quad \ne \mathrm{True},\:e\ne \:0[/tex]

[tex]\mathrm{Simplify}[/tex]

[tex]\frac{x}{e}=-\frac{25}{3e^1};\quad \ne \mathrm{True},\:e\ne \:0[/tex]

[tex]\mathrm{Multiply\:both\:sides\:by\:}e[/tex]

[tex]\frac{xe}{e}=\left(-\frac{25}{3e^1}\right)e;\quad \ne \mathrm{True},\:e\ne \:0[/tex]

[tex]\mathrm{Simplify}[/tex]

[tex]x=-\frac{25}{3};\quad \ne \mathrm{True},\:e\ne \:0[/tex]

Answer:he sum of a lists of numbers is 624 and the mean is 52. How many numbers are in the set? Get the answers you need, now!

Step-by-step explanation:

Answer:

He purchase 20 times.

Step-by-step explanation:

1.25(r)+6.75

1.25(20)+6.75

25+6.75=$31.75

Answer:

-11.9 F

Step-by-step explanation:

Answer:

[tex]-\frac{b}{2a}[/tex] is the equation for axis of symmetry.

Step-by-step explanation:

b is the second part of the quadratic equation and a is the first part.

For example, [tex]2x^{2} +6x + 4[/tex]

a is 2 and b is 6.

Plug in those values into the equation and then you get the axis of symmetry.

Answer:

0.01

Step-by-step explanation:

On khan

Answer:

7 mark above answer brilliant

Answer:

36, 29 and 13

Step-by-step explanation:

Let 'a' be the longest side.

Let 'b' be the middle side.

Let 'c' be the smallest side.

From the question given above,

The perimeter of a triangular garden is 78 feet. This can be written as:

Perimeter = a + b + c

78 = a + b + c ...... (1)

The middle length side is 3 feet greater than twice the length of the smallest​ side. This can be written as follow:

b = 2c + 3 ...... (2)

The longest side is 3 feet less than 3 times the length of the smallest side. This can be written as follow:

a = 3c – 3 ..... (3)

Summary:

78 = a + b + c ...... (1)

b = 2c + 3 ...... (2)

a = 3c – 3 ..... (3)

Substitute the value of a in equation

3 and the value of b in equation 2 into equation 1

78 = a + b + c

b = 2c + 3

a = 3c – 3

78 = (3c – 3) + (2c + 3) + c

78 = 3c – 3 + 2c + 3 + c

78 = 3c + 2c + c – 3 + 3

78 = 6c

Divide both side by 6

c = 78/6

c = 13

Substitute the value of c into equation 2 and 3 to obtain the value of b and a respectively

b = 2c + 3

c = 13

b = 2(13) + 3

b = 26 + 3

b = 29

a = 3c – 3

c = 13

a = 3(13) – 3

a = 39 – 3

a = 36

Therefore, the length of the three sides are: 36, 29 and 13

Answer:

y = -1x

Step-by-step explanation:

no y intercpt because it intercepted in the origin

Answer:

y=-x

Step-by-step explanation:

the other answer didn't include the negative so be careful! if it's going downwards then its always negative.

Answer:

Ones

Step-by-step explanation:

The last digit will always be the ones place no matter what.

Answer:

ONES

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

16/2.5 = 6.4, but you have to round down because you cant chop a book into tenths, so 6

The Answer:

If Sandra started at 800 meters and went up 120, the answer would be 920.

Step-by-step explanation:

First, simply add 800 meters, which is what she started with. Next, since she has gone up 120 meters since then, and the question is asking us what her elevation is NOW, you can add 800 + 120 to get 920. This question is solved by using addition.

Hope this helps!

Answer:

oof i don't know if that's possible

maybe try emailing them

Step-by-step explanation:

Answer:

what?

Step-by-step explanation:

Answer:

D.) 138

Step-by-step explanation:

It cannot be the others because it is a big obtuse angle.

Answer:

D.) 138

Step-by-step explanation:

It cannot be the others because it is a big obtuse angle.

Answer:

It will take Wilson 50 minutes to paint this bookcase.

Step-by-step explanation:

40%=20 minutes

10%=5 minutes

100%=50 minutes

Hope this helped! :)

Answer:

I don't have an answer to this question but one tip is to try using GCF (greatest common factor)

it is a big help when I try to do math

Answer:

quarter, nickel, and a penny

Step-by-step explanation:

you need to add up to 31 but you can only use 3 coins so 25, 5, and 1 make 31.

Answer:

NOT c

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

The graph crosses the x-axis at x = 2 and x = –1 and touches the x-axis at x = 0.

The graph touches the x-axis at x = 2 and x = –1 and crosses the x-axis at x = 0.

The graph touches the x-axis at x = –2 and x = 1 and crosses the x-axis at x = 0.

Answer:

cvvvvvvvvvvvvvvgfjgf

Step-by-step explanation:

cxvvvvvvvvvvvvvv

Answer:

-11/8

Step-by-steexplanation:

Answer:

1

Step-by-step explanation:

because mary can drink 1 jg in 7 days john can drink in six da7 if the drink it together itll go fatser

Answer:

x=y-16

x=1 then y=44

x=2 y=28

x=3 y=12

x=3 y=-4

x=5 y=-20

Answer:

5. Answer C is right for sure.

6. JN=JE+EN

Step-by-step explanation:

Answer:

x=20

Step-by-step explanation:

Complementary means =90 degrees, so with that being said, you need to write the equation as follows:

2x+10+x+20=90

Then add like terms:

3x+30=90

Subtract 30 from both sides (30 and 90)

3x=60

Divide both sides by 3

x=20

I hope this helps!!

Answer:

a)M5=40º

b)M2=140º

c)M2 and M5 are supplementary angles

d)M2 and M5 are same side interior angles

e) A||B

Step-by-step explanation:

Remember that same side interior angles are the angles that are located on the same side of a straight line that cuts through two parallel lines, and these angles are supplementary, meaning that the sum of both of them will always be 180º. So by stating that M5 and M2 add up to 180º and they are on the same side of a straight line cutting through two straight lines we can prove that those two lines are parallel.

Answer:

x ≥ _

Step-by-step explanation:

I can't see the numbers, however the number under the closed dot would be the number to insert there. Leave x alone.

Answer:

integer

Step-by-step explanation:

Integer is classified as a whole number, whole number is classified as an integer.

Answer:

ok

Step-by-step explanation:

Answer:

Great job.

Step-by-step explanation: