Mathematics College

x + 2x - 1 = -8 + 3x + 7

Answers

Answer 1

Answer:

All real numbers are solutions.

0=0

Step-by-step explanation:

Let's solve your equation step-by-step.

x+2x−1=−8+3x+7

Step 1: Simplify both sides of the equation.

x+2x−1=−8+3x+7

x+2x+−1=−8+3x+7

(x+2x)+(−1)=(3x)+(−8+7)(Combine Like Terms)

3x+−1=3x+−1

3x−1=3x−1

Step 2: Subtract 3x from both sides.

3x−1−3x=3x−1−3x

−1=−1

Step 3: Add 1 to both sides.

−1+1=−1+1

0=0

Answer:

All real numbers are solutions.

Related Questions

2. Using exponents, what is the simplified form of
15x6/3x2
F. 5x4
G. 5x3
H. 5x
I. 5
P.s, the x are the letter x

Answers

Answer:

the answer is 5*3

Step-by-step explanation

15*6=90

3*2=6

90/6=15

5*3=15

G

PLS HELP I'LL GIVE BRAINLEST AND POINTS

The area of the base of a box is 150 square centimeters. The volume of the box is 3,300 cubic centimeters. What is the height of the box?

Answers

i’m sorry if this is wrong but don’t you have to do length times width??

Answer:

the height is 22

Step-by-step explanation:

volume = base×height ×width

3,300÷150=22

then to check it u do 22×150=3,300

i think this is right and hope it helps

Find the y intercept for 3x+2y=21

Answers

3x+2y=21 simplifies to y=3/2x+21/2, which means the y intercept is 21/2 or 10.5.

Answer:

The y-intercept is 21/2

3x + 2y = 21

-3x

2y = 21 - 3x

/2

Y = 21/2 - 3/2x

The number with the x is the slope and the other is the y-intercept

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

Answers

A. Because the T is less than negative 15 and the only one less than that is A. Very simple. :)

A model of a triangular lawn is scaled to have 1 cm represent 10 yards.
13 cm
8 cm
What is the area of the actual lawn?

Answers

52 is the answer

Remember, the area of a triangle is (base x Hight) divided by 2

A yard stick is about how wide?

Answers

Answer:

3 feet long about 1 1\2 inch wide though

Step-by-step explanation:

.

3 feet

36 inches

0.000568182 of a mile

Long

cos(t) = 4/5
What is the value of t?

Answers

Answer:

t = 0.6435 in radians or 36.8699 in degrees

Step-by-step explanation:

Since cos(t) = 4/5, t = inverse cos(4/5) = 0.6435

7th grade math help me plzzzz

Answers

Answer:

2.) -2 +-3 = -5

4.) -6+-10= -16

What is the equation for the line of reflection?

Answers

X = 6

The vertical line where all x values are 6

Insert <, >, or = between the quantities to make a true comparison.
(23-9)+(6+1) 23-9+6+1
a. <
b. >
C.=

Answers

Answer:

c

Step-by-step explanation:

It’s the same thing even if you put ()

Question 9 (10 points)
Find the average rate of change of the function below from x1 to X2.
f(x) = 5x +7

Answers

Step-by-step explanation:

access to one as to which the two was to wisdom 100 as wisdom teeth is my dream wall

What’s the missing value of y=-2+4

Answers

Answer:

y=2

Step-by-step explanation:

Answer:

y = 2

Step-by-step explanation:

-2 + 4 = 2

therefore, y = 2

30 POINTS I WILL GIVE BRAINLYIST
3. A group of workers is harvesting berries at a constant rate. An equation that represents the total number of baskets of berries the workers picked over a period of time, in hours, is y = 7x + 15.
(a) What are the slope and the y-intercept for the equation?
(b) Which term represents the total number of baskets of berries the workers picked over a period of time?
(c) What are the rate of change and the initial amount? Explain the meaning of the rate of change and the initial amount for the situation.
(d) Use graph below to draw a graph representing the situation. Label the axes appropriately.

Answers

Answer:

The answer Is B! Let me know if its wrong!

Hope you do great!

Step-by-step explanation:

19-6x=-11
what is x?

Answers

Answer:

x = 5

Step-by-step explanation:

19 - 6x = -11

-6x= -11 -19

-6x = -30

x= 5

Answer:

x = 5

Step-by-step explanation:

19 - 6x = -11

-6x = -11 - 19

-6x = -30

-6x/-6 = -30/-6

x = 5

19 - 6*5 = -11

19 - 30 = -11

-11 = -11

Solve for c. 9 -b +c = p

Answers

Answer:

c=p-9+b.

Hope this helps if so Please consider marking brainliest!

Step-by-step explanation:

Move all terms not containing C  to the right side of the equation.

c = p -9 + b

g You believe that the mean life is actually less than the 100 hours the company claims. You decide to collect data on the average battery life (in hours) of a random sample and obtain the following information: the sample mean is 98.5, the standard error of the mean is 0.777 and the number of observations is 20. What can you conclude:

Answers

Answer:

The mean life is actually less than the 100 hours the company claims.

Step-by-step explanation:

In this case we need to test whether the mean life is actually less than the 100 hours the company claims.

The information provided is:

 [tex]n=20\\\bar x=98.5\\s=0.777[/tex]

The hypothesis for the test can be defined as follows:

H₀: The mean life 100 hours, i.e. μ = 100.

Hₐ: The mean life is actually less than the 100 hours, i.e. μ < 100.

Assume the significance level as 5%.

As the population standard deviation is not known we will use a t-test for single mean.

Compute the test statistic value as follows:

 [tex]t=\frac{\bar x-\mu}{s/\sqrt{n}}=\frac{98.5-100}{0.777}=-1.93[/tex]

Compute the p-value of the test as follows:

 [tex]p-value=P(t_{n-1}<-1.93)=P(t_{19}<-1.93)=0.034[/tex]

*Use a t-table.

Thus, the p-value of the test is 0.034.

Decision rule:

If the p-value of the test is less than the significance level then the null hypothesis will be rejected and vice-versa.

p-value = 0.034 < α = 0.05

The null hypothesis will be rejected at 5% level of significance.

Thus, concluding that the mean life is actually less than the 100 hours the company claims.

which equation represents exponential decay

Answers

Answer:

You have to show the question

Step-by-step explanation:

Add the Polynomials
(7-7p4) + (5p4 + 7)

Answers

the answer is -2p^4. hope this helps

A right triangle has side lengths

Answers

Answer:

tan b

Step-by-step explanation:

From the center to the edge of a DVD measures 60 mm.
RADIUS =
mm
DIAMETER =
mm
CIRCUMFERENCE =
mm

Answers

radius= 60mm
diameter= 120mm
circumference ≈ 377mm

Someone help please xxx

Answers

Angle a is congruent to angle x
Angle b is congruent to angle z
Angle c is congruent to angle y
Line ab is congruent to line xz
Line ac is congruent to line xy
Line bc is congruent to line zy
Triangle bac is congruent to triangle zxy

What is the slope of the line that passes through the points 6,-2, and 12,-2kjj

Answers

0. Hope this helps!!

What is X? 3(-x-3)+x-3=-24

Answers

Answer:

x is equal to 6

Step-by-step explanation:

Hey there!

3(-x-3) + x-3= -24

Multiply"3" and (-x-3).

-3x - 9 + x - 3 = -24

Add or subtract like terms.

-2x - 12 = -24

Shift "-12" in right side.

-2x = -24+12

-2x = -12

Divide "-12" by "-2".

X = -12/-2

Therefore, x= 6.

Hope it helps...

PLSSS HELP ME I WILL GIVE BRAINLIEST!!!!!!!!

Answers

Answer:

12x - 30

Step-by-step explanation:

Do you want 3x??

If so, here:

3(4x - 10)

12x - 30

Hope this helps!

Have a nice day!

If you fin my answer helpful

Pls consider marking my answer as Brainliest! It would mean a lot!

what are 3 equivalent to the ratio to 5/7

Answers

Answer:        15/21 , 25/35 , 10/14 or 10/14, 15/21, 20/28

     

Step-by-step explanation:

Answer:

10/14, 15/21, 20/28

Step-by-step explanation:

Just multiply a number by the top and bottom to get a ratio that simplifies down to 5/7.

r/6=-2 PLZ HELP I HAVE TO TURN THIS IN SOON

Answers

Answer:

r=-12

Step-by-step explanation:

multiply 6 on both sides which will be r=-12

Hope this helps

Answer:

r=-12

Step-by-step explanation:

h(t)= 50-t/5

h(35) =

Answers

Answer:

125

Step-by-step explanation:

Answer:

h= 50 - th(35)/5

Step-by-step explanation:

help me i'm gonna fail!!!!!!!

Answers

Answer:

ok give me brainliest and i'll help

Step-by-step explanation:

Answer:

what is it that u need help with?

helpppppppppppppp pls ​

Answers

Answer:

9 is the answer

Step-by-step explanation:

Answer:

it is 405

Step-by-step explanation: because you would multiply 3 and 9 and that is 27 then 3 x 5 is 15 the multiply 15 and 27 then you get 405

A tower was built in 5,500 worker-hours. The contractor believes that the learning rate per tower will be 0.80 for additional towers. How many towers will have to be built before the time per tower is reduced to 3,000 worker-hours. How much time will be required for the 16th tower

Answers

Answer:

The answer is below

Step-by-step explanation:

Let us assume the relationship between the worker hours and the towers is a linear relationship. A linear relationship is in the form of y = mx + b, where m is the rate of change and b is the value of y when x = 0.

Let y represent the number of worker hours and x represent the number of additional towers. The rate per tower is 0.8 for additional towers. The relationship can be given as:

y = 5500 - 0.8x

a) The number of hours is reduced to 3,000 worker-hours. y = 3000

3000 = 5500 - 0.8x

0.8x = 2500

x = 3125 towers

b) For an additional 16th tower:

y = 5500 - 0.8(16)

y = 5487.2 hours

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