how do i solve this .75x4 – 8 = -12

Answers

Answer 1
assuming the .75x4 is .75 times x times for and not .75 times four...
Firstly, know you want x on its own.

So I’d start by adding 8 to both sides. This cancels out the -8:

.75x *4 - 8 = -12
+8 +8

= .75x * 4 = -4

Now divide by 4, both sides.
.75x * 4 = -4
———————
4

=.75x = -1

Finally, divide both sides by .75:

.75x = -1
—————
.75

= x = -1.33 (33 repeating) OR -4/3

But if you meant .75x^4 - 8 = -12 then here’s the answer.

First you add 8 to both sides, so:

75x^4 - 8 = -12
+8 +8

= .75x^4 = -4

Now divide both sides by .75:

.75x^4 = -4
——————
.75

= x^4 = -5.3333 OR -16/3

Now’s the harder part. We need to get rid of ^4 from x. Which means taking the root (both sides)...

An easier way to say this, and how I prefer to set it up, is + or - (-16/3)^(1/4)

You have the + or 1 part because the square root of something is always able to be positive or negative— as an easy example, 2*2=4 and -2*-2=4, so root of 4 could be -2 or 2. Anyways for this problem there aren’t any real solutions.

If your teacher is expecting you to use i in order to get the answers (for this last part, assuming they wanted .75x^4 and not .75x*4) then I can explain in the comments but it’s definitely harder than what I’ve shown here.

Related Questions

Can anyone help me please?

Answers

Answer: 17

Step-by-step explanation:

We can tell that for every 2 changes in X there is 8 points lost in y

meaning that if we do 8 /2 we get 4

Every 1 change in x there is 4 points of change in Y

so if (3,5) Then (0,17)

17 - 5 = 12 And 3-0 = 3 So for 3 points of change for Xthere were 12 points of change for Y so this is right

17 since y is going up by 4 each time meaning if x goes to 0 that’s 4 3 times meaning 12 then 12+5 is 17

1+1-1+2+3/4x8+56+1-7

Answers

Answer: 1+1-1+2+3/4x8+56+1-7     =   59

Your answer is 61
Hope this helps :) have a nice day and good luck!

32+4 X (16 X 1/2) -2

Answers

Answer: look at the picture

Step-by-step explanation: Hope this help :D

Find the explicit rule: 2, 6, 18, 54, 162

Answers

Multiply each number by 3.

2 (x 3) is 6. 6 x 3 is 18, 18 x 3 is 54, 54 x 3 is 162.

Hope this helps!

Answer:

f(n) = 2 × [tex]3^{n-1}[/tex]

Step-by-step explanation:

In order to write an explicit rule for a geometric function, you need to know the common ratio; you can find the common ratio by dividing two consecutive terms:

6 ÷ 2 = 3, 18 ÷ 6 = 3, 54 ÷ 18 = 3, etc..

Now you know the common ratio is 3. At this point you can write your explicit function following the rule f(n) = [1st term] × [common ratio]^(n-1):

f(n) = 2 × 3^(n-1)

16-2t=5t+9?????????????????????????????????????

Answers

Answer:

t=1

Step-by-step explanation:

16-2t=5t+9 (add 2t)

16=7t + 9 (subtract 9)

7=7t (divide 7)

t=1

Answer:

t=1

Step-by-step explanation:

step one : rearrange terms

16−2=5+9                

−2+16=5+9

step two: subtract 16 from both sides of the equation

−2+16=5+9

−2+16−16=5+9−16

step three: simplify

−2=5−7

step four:Subtract 5t from both sides of the equation

−2=5−7

−2−5=5−7−5

step five: combine like terms

−7=−7

step six: divide

−7 /−7 =−7/−7

In the figure below, MN | KL and are intersected by transversals ML and KN M 1551 What is the measure of , XMN?
130°
85°
55°
50°​

Answers

Answer:

∠ XMN = 50°

Step-by-step explanation:

∠ XNM and ∠ XKL are alternate angles and are congruent, then

∠ XNM = 35°

The sum of the 3 angles in a triangle = 180° , so

∠ XMN = 180° - (95 + 35)° = 180° - 130° = 50°

Geometry Angle of elevation/depression

Answers

Answer:

m∠ACB = 49.88°

Step-by-step explanation:

From the figure attached,

Measure of wire AC attached to the top 'C' of the building BC = 340 m

Horizontal distance between the base 'B' of the building and point A = 260 m

Angle of depression = ∠ACB

By applying sine rule in the given triangle,

sin(∠ACB) = [tex]\frac{\text{Opposite side}}{\text{Hypotenuse}}[/tex]

                 = [tex]\frac{AB}{BC}[/tex]

                 = [tex]\frac{260}{340}[/tex]

m∠ACB = [tex]\text{sin}^{-1}(764706)[/tex]

             = 49.88°

A scooter costs $160. A bicycle costs 20% more than the scooter. How much does the bicycle cost? ?​

Answers

Answer:

$192

Step-by-step explanation:

160 = 100% or 1.00

20% = 0.2 + 1.00

       =  1.20

160 x 1.20 = $192

Answer:

$192

Step-by-step explanation:

$160 + 20% = $192

Do this for a cookie plz ;)

Answers

Answer:

i just want the cookie so can i have it ? ._.

Step-by-step explanation:

Solve the expression 9 + (20 x one fourth) − 6 ÷ 2 using PEMDAS.

Answers

The answer is 11. 9+5-3

Answer: B

Step-by-step explanation:

I did the test

Which statement is true?
Point (-2,-7) is located in Quadrant I of a coordinate plane.
Point (3,-9) is located in Quadrant II of a coordinate plane.
O Point (-4, 8) is located in Quadrant Ill of a coordinate plane.
O Point (5, -1) is located in Quadrant IV of a coordinate plane.

Answers

Answer:

Point (5, -1) is located in Quadrant IV of a coordinate plane.

Explanation:

Point (-2,-7) is located in Quadrant III of a coordinate plane, not Quadrant I.

Point (3,-9) is located in Quadrant IV of a coordinate plane, not Quadrant II.

Point (-4, 8) is located in Quadrant Il of a coordinate plane, not Quadrant III.

Answer:

Step-by-step explanation:

Qual o número que subtraído de 27 resulta em 54 negativos?

Answers

Translation (For those that don't know Spanish):

Which number that subtracted from 27 results in negative 54?

how to write the radical √8 using rational exponents?

Answers

Answer:

2√2

Step-by-step explanation:

√8 can be simplified to √(4)(2) , since 4 x 2 still equals 8. But now, 4 is a perfect sqaure, and whenever we get a perfect sqaure, we divided it by its root and put that number on the outside.

For ex: √32 = √(16)(2), since 16 x 2 = 32. 16 is a perfect sqaure, so we take its root and put it on the outside 4√2 ,

Now with this one, we'll do the same thing: √(4)(2) = 2√2

Answer:

2^2

Step-by-step explanation:

Dr. Drake is thinking about retirement and decides to sail around the world once he retires. He buys a sailboat for $125,000. He borrows the money at an APR of 7.5% for five years. He uses the monthly payment formula comes up with a monthly payment of $2,504.74. How much will his total interest be?

Answers

Answer:

$46875.

Step-by-step explanation:

We have been given that Dr. Drake buys a sailboat for 125000. He borrows the money at an APR of 7.5% for five years.

We will find total interest after 5 years by using simple interest formula

A=P(1=rT), where,

A= Amount after T years.

P= Principal amount.

r= The annual interest rate (in decimal form).

T= Time in years.

_______________________________

First of all we will convert our given interest rate from percent to decimal form.

7.5 precent= 0.075

________________________________

Now let us substitute our given values in above formula.

A=125,000 (1+(0.075 x 5))

A=125,000 (1+0.375)

A=125,000 (1.375)

A=171875

To find the amount of total interest we will subtract principal amount from 171875.

Total amount of interest= 171875 - 125000

Total Amount of interest= 46875

Therefore, the total interest after 5 years will be $46875.

I hope this helps    :)

please help i don't understand what this means ahh

Answers

Answer:

WHAT WENDOSDD

Step-by-step explanation:

Answer:

9 units

Step-by-step explanation:

75%
a) Complete the table of values for y = x
YA
в с
6
Х
0.5
1
2
3
4
5
у
1.5
0.75
4
b) Which is the correct curve for y = ?
3
2
1
O
1
e
ED
Bi
i
**
Type here to search
lije

Answers

Step-by-step explanation:

a) 3/0.5= 6

3/1=3

3/2=1.5

3/3=1

3/4=0.75

b)A as that's the only one that corresponds the the answers in the table

Step-by-step explanation:

3/0.5=6

3/1=3

3/2=1.5

3/3=1

3/4=0.75

3/5 as a decimal and rounded to the nearest thousandth

Answers

Answer:

0.6

Step-by-step explanation:

i give points for correct answers, so please be big-brain and give me the right answers

Answers

Answer:

(6,8)

D

y-intercept (0,-6/5)

x-intercept (-3,0)

Step-by-step explanation:

Answer:

for first one

we have y=8

substituting value

2x+3×8=12

2x=12-24

x=-12/2=-6

x=-6 for first one

Step-by-step explanation:

for second one

let keep (2,2)

equation becomes

2×2+3×2=10

10=10 true

let keep (1,3)

equation becomes

2×1+3×3=10

11=10 false

so (2,2) is your answer for second one.

Calculate the length of the unknown side of each triangle.
a)
3 cm
5 cm
Give your answers to the nearest mm.

Answers

Answer:

5.8cm or 58mm

Step-by-step explanation:

Need help with this please ​

Answers

Answer:

These are kinda tuff  Mandi,  sooo remember what's below

Step-by-step explanation:

Use SOH CAH TOA to recall how the trig functions fit on a triangle

SOH: Sin(Ф)= Opp / Hyp

CAH: Cos(Ф)= Adj / Hyp

TOA: Tan(Ф) = Opp / Adj

now fine one of the above functions that has the 3 things you are working with.   2 knowns, and 1 unknown

also we know that the angle at the right tip of the triangle is 90-59= 31°

we know that b/c the inside angles of a triangle always add to 180 and there is already a 90° so we only have 80 left, which the 59° is part of, so 31 is the other, now put that info into one of the above formulas

x= adjacent side

and we know the angle and hypotenuse side.    find the formula with those parts.  I see Cos  has those or CAH... to help remember how those fit

Cos(31) = x / 17

17*cos(31) = x

14.5718 = x

there is your answer,  understand how I got it? :)

There are 16 cars for every 9 trucks in a parking lot. If there are 72 trucks in total in the parking lot. How many cars are there?

Answers

the answer would be 128 cars. because if u divide 72 by 9 (u do this to see how much the number of trucks increased) which is 8. then u multiply 16 by 8 (the number that the amount of trucks was increased by) to get 128. i hope this helped!!
The answer would be 16•8=128.

Please helppp answer correctly I’ll mark u brainliest

Answers

Answer:

≈ 15 ft

Step-by-step explanation:

There is a right triangle formed by the ground, the building and the ladder.

The ground and the height the ladder is up the wall are the legs and the ladder is the hypotenuse.

let x be the distance from the base of the building to the bottom of the ladder.

Using Pythagoras' identity in the right triangle

x² + 26² = 30²

x² + 676 = 900 ( subtract 676 from both sides )

x² = 224 ( take the square root of both sides )

x = [tex]\sqrt{224}[/tex] ≈ 15 ft ( to the nearest foot )

To build a garden bed, James bought 36 feet of wood. If he makes the length of the garden 10 feet, what will the width be?

Answers

10*2 = 20

36 - 20 = 16

16 / 2 = 8

Answer is 8

Find the measure of the given angle show work.

Answers

Answer:

photomath is good, try this

Which statement is NOT true concerning a linear equation?

1. Neither x nor y can appear as an exponent or a radical

2. The variables x and y can be multipled together

3. The variables x and y must have exponent of 1

4. Neither x nor y can appear in a denominator

Answers

The statement that is false is:

"The variables x and y can be multiplied together"

Which statement is not true?

The general linear equation is given by:

y = a*x +b

Where a is the slope and b is the y-intercept.

The statement that is evidently false about the above general equation is:

"The variables x and y can be multiplied together"

y depends linearly on x, so these variables can't be multiplied together.

If you want to learn more about linear equations:

https://brainly.com/question/1884491

#SPJ1

Which is closest to the surface area of the figure?

Answers

A I think I’m sorry if I’m wrong haven’t done this in a while

Consider -103/-3. Which statements are correct?
A)
The quotient is -36.
B)
The quotient is 36.
C) The quotient of two negatives is always negative.
D)
The quotient of two negatives is always positive.
E)
The integer with the greatest absolute value always determines the
quotient's sign

Answers

Answer:

D is the correct answer

Step-by-step explanation:

negative ÷ negative = positve

Answer:

D)

Explanation

A) and B) are false because -103/-3 is equal to 34.3333....

C) The quotient of two negatives is always negative. ⇒ False because D) is true

D) The quotient of two negatives is always positive. ⇒ True

E) The integer with the greatest absolute value always determines the

quotient's sign ⇒ False because D) is true

I hope this helps!

pls help on my homework. due tonight
i need help asap
Match the given graphs with the corresponding functions in the table below. Use the letter in the
bottom left corner of the graph.

b) Given the function ff(xx) = llllll3(xx + 2) − 1, state the following characteristics:

Asymptote:__________________ End Behavior: _______________________________________
_______________________________________

c) Describe what an asymptote is, and write the end behavior in your words.

Answers

Answer:

A line that a curve approaches as it heads towards infinity

The asymptote is -2 there is no end behavior

Step-by-step explanation:

at the post office 45% of packages ship as priorty mail if 160 packages are shipped today,how many will NOT go as priorty mail. IF YOU CAN HELP I WOULD GREATLY APPRECIATE IT :)))

Answers

88- 55%is not priority so 55% of 160 is 88

Please help?
What is the period?
A. 1440
B. 360

Answers

I think it’s A but I’m not sure
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