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1 year ago

HELP ASAPA PLS I WILL GIVE BRAIN when did she make her mistake how and how should it be?!!!

Mathematics

2 answers:

Vitek1552 [10]1 year ago

8 0

Answer:

Mistake in step 3

Step-by-step explanation:

3^16/3^-8 should simplify to 3^24 not 3^8

r-ruslan [8.4K]1 year ago

3 0

Answer:

i think the mistake is made in step 3 if that help at all

Step-by-step explanation:

3^16/3^-8 turns into 3^24 that means not 3^8

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Given the function ƒ(x) = 5x2 − 9x + 18, find ƒ(3).

Crank

Answer:

f(3) = 36

Step-by-step explanation:

ƒ(x) = 5x^2 − 9x + 18

Let x =3

ƒ(3) = 5(3)^2 − 9(3) + 18

= 5*9 -27 +18

= 45 -27+18

=36

6 0

3 years ago

What is the value of x in the equation 2(x+3)=4(x-1)

Nina [5.8K]

Firstly, expand the equation.
$2(x + 3) = 4(x - 1) \\ 2x + 6 = 4x - 4$

Next, move the variable x to the left and all the constant to the right.
$2x + 6 = 4x - 4 \\ 2x - 4x = - 4 - 6 \\ - 2x = - 10$

Then, solve for x.
$- 2x = - 10 \\ x = \frac{ - 10}{ - 2} \\ x = 5$

5 0

3 years ago

The perimeter of a rectangle is 152m. If the length is one morethan twice of its width. Find the length and width of rectangle.

sergejj [24]

Step-by-step explanation:

Perimeter of a Rect.= 2(l+b)

b= x

l= 2x

Equation

152= 2(2x+x)

152= 2(3x)

152= 6x

x= 25.33

2x= 50.66

Therefore length is 50.66m and breadth is 25.33m

3 0

3 years ago

Anne’s family is driving to her uncle’s house. The family travels 383.5 miles between 10:15 a.m. and 4:45 p.m.Anne tells her fam

Ede4ka [16]

Answer:

They would have arrived at 5:55pm

Step-by-step explanation:

kindly see the attached file for more explanation

8 0

3 years ago

If x varies directly with y and x = 2.5 when y = 10, funny x when y = 16.

amid [387]

Answer:

Should be 4.0(Not sure tho. my thought process is complicated but to me it makes sense)

Step-by-step explanation:

If y=10 and x =2.5, if y were to = 20, then x would equal 5. so you take that ratio, and say 6 is 3/5's the way to 10, so you also divide 2.5 by 3/5

you get 1.5, you add that to x already and you get 4.0

so if y=16, x should =4.0

3 0

3 years ago