Mathematics College

not sure need help ​

Not Sure Need Help

Answers

Answer 1

Answer:

29

Step-by-step explanation:

5x+35=180 cuz 3x+2x, and 15+20

the subtract 35 on both sides, so 5x = 145

x=29

lets check

3(29)+15 = 102

2(29)+20 = 78

102+78 = 180

so x = 29

Answer 2

Answer:

29

Step-by-step explanation:

3x+15+2x+20=180

Combine like terms

5x+35=180

Subtract 35 on both sides

5x=145

Divide by 5 on both sides

x=29

Related Questions

You have saved $1500 to buy a TV you notice the store is offering one year same as cash deal you can take the TV home today and pay nothing until one year from now when you’re out of the store $1500 purchase price if your savings account earns 5% a year what is the NPV of this offer

Answers

Answer:

The net present value of 1,500 a year from now at 5% interest is $1,428.57.

Step-by-step explanation:

NPV = 1,500 / 1.05 = 1,428.57

In a school egg drop challenge 136 of the eggs broke out of 200 total what percent of eggs survived the drop ?

Answers

To make this equation easier, we can just divide the data by 2, so that the exact number of eggs that survived, is the percentage that survived.

Explanation:

200 = 200    Total Eggs

136  = 136   Eggs That Broke

So, the ratio of eggs that broke to total eggs is:

136 / 200

So, subtract the number of eggs that broke to the total eggs, to find the amount that survived.

200 - 136 = 64

So now we know that, 64 eggs of 200 survived.

Which means, that 32% off the eggs had survived.

I agree it only makes since

Solve for a when x is 12
X=
(1 + a)
(1 – a)

Answers

Answer:

so i checked on many apps cause im kinda stupid and didnt know and they all said a=11/13 but you could wait for sum1 else to answer

Step-by-step explanation:

Convert 1AA from hexadecimal to decimal.

Answers

1AA = 426

What an odd class...

Answer:

426 in decimal.

Step-by-step explanation:

Step 1) Count the digits in 1AA, which in this case is 3 digits, and convert each digit to Hex.

Step 2) Starting from the last number in Step 1, multiply the first number with 1, the second number with 16, and the third number with 256.

Step 3) Add up all the numbers you got in Step 2 to get the answer.

Following the instructions above, your math should look like this:

10 x 1 = 10

10 x 16 = 160

1 x 256 = 256

10 + 160 + 256 = 426

Thus, we got the following answer:

1AA = 426

What are the properties of a rectangle ?

Answers

Answer:

The fundamental properties of rectangles are: A rectangle is a quadrilateral The opposite sides are parallel and equal to each other Each interior angle is equal to 90 degrees The sum of all the interior angles is equal to 360 degrees.

Step-by-step explanation:

Alexander spent a total of 12.5 hours on a science project for the Science Fair. His sister, Laura, spent 16.6 hours on a science project. How many more hours did Laura spend on her project than Alexander spent on his?

Answers

Answer:

4.1 I think

Step-by-step explanation:

I just subtracted in my head

Answer:

4.1 hours

Step-by-step explanation:

Laura spent 4.1 more hours on her project than Alexander spent on his. If we split each number into 2 parts (like this: 12.5 -> 12 and .5; 16.6 -> 16 and .6) then we can subtract 12 from 16 and .5 from .6 to get 4 and .1. we add those together to get 4.1

Please help !!!!!!!!!! , i don't know what to write.
Write a paragraph describing the business venture and what kind of algebra or other calculations and formulas might help someone in that endeavor. Also include ways in which the business might operate differently with those tools than without them.

Answers

Step-by-step explanation:

A business that offers services to people by providing many amusement and fun with gate fees

The algebraic equations to be used is the general linear equation

Y = MX + C

Where

Y = total income or money realised

M = rate or price rate

X = number of goods or services

C = flat rate or gate fees

The business can also operate differently by using exponential equation

A = P(1 + R%)^t

Where

A = profit

P = capital

R = rate

t = time

Hope this helps :D

-4(3/2x - 1/2) = -15

Answers

Answer:

2.8333333333333333333

Step-by-step explanation:

I have high iq

-4(3/2x - 1/2) = -15

Distribute -4

-6x + 2 = -15

Subtract 2 from both sides

-6x = -17

Divide 6 from both sides

x = 2.83333333333333333

If AABC and AXYZ are similar, which must be true?

Answers

Answer:

(D).

Step-by-step explanation:

ΔABC ~ ΔXYZ

(D).  [tex]\frac{AC}{XZ}[/tex] = [tex]\frac{BA}{YX}[/tex]

Solve four ninths minus four tenths equals blank.

Help Me ASAP

Answers

The answer is 2/45.......

Answer:

4/9

Step-by-step explanation:

kx^2+k=8x-2xk

Find the range of values of k- there are two distinct roots.

I’m pretty sure you need to use the discriminate but i’m stuck so pls could somebody show me step by step

Answers

Answer:

i cant understans the quedtoion its worng bro

What is one characteristic of the cosine function? It is an odd function. It has a period equal to π. Its graph is symmetric about the y-axis. Its domain is between –1 and 1 and is inclusive.

Answers

Answer:

D) its domain is between -1 and 1

Step-by-step explanation:

cos is actually an even function, and it has a period of 2π.

Sine has a graph symmetric about the y-axis, not cosine.

Answer:

C.  Its graph is symmetric about the y-axis.

Step-by-step explanation:

If you graph on desmos it shows that it is symmetric about the y-axis :)

whats 2+2 super ez giving brainliest to correct 1

Answers

Answer:

4

Step-by-step explanation:

...........................

Please answer!! Will make brainliest (Photo is the question)

Answers

I think it’s either A or D

2(2x + 1) = 2+11)
bruh what is the answer

Answers

Answer:

basically you're solving for x.

Step-by-step explanation:

x = 11/4 for exact form

in decimal form

x= 2.75

in mixed number form

x = 2 3/4

but in this case it's 2.75

5/25 in its simplest form

Answers

Answer: [tex]\frac{1}{5}[/tex]

Step-by-step explanation:

[tex]\frac{5}{25} =\frac{1}{5}[/tex]

1 / 5
Divide the numerator and denominator by their lowest common multiple which is 5 in this case
So 5 / 25 = 1 / 5

what is the slope of a surface having a rise of 5 feet and a run of 0 feet?

A. 100%

B. Undefined

C. 5

D. 50

E. 0

Answers

Slope is always a fraction, think of it as rise over run. Y is always on top of x so 5/0. Your answer is B.

5z + 3n -z2 ; n = 4.5 , z = 6 PLZ answer this

Answers

Answer:

5(6)+3(4.5)- 6(2)= 31.5

Step-by-step explanation:

Answer:

hmmmmm

Step-by-step explanation:

Which of the following sequences of transformations is used to obtain figure T′U′V′W′ from TUVW? (4 points)

a
Reflection about the y-axis followed by a translation left by 2 units

b
Reflection about the x-axis followed by a translation left by 2 units

c
Counterclockwise rotation by 90 degrees about the origin followed by a translation right by 2 units

d
Counterclockwise rotation by 90 degrees about the origin followed by a translation left by 2 units

Answers

Answer: a (reflection over y-axis, followed by a translation of 2 units left)

Step-by-step explanation:

How do you create zero pairs using algebra tiles? Add a positive unit tile to a negative unit tile. Add a positive unit tile to a positive unit tile. Add a negative x-tile to a negative x-tile. Add a negative x-tile to a positive unit tile.

Answers

Answer:

A:  Add a positive unit tile to a negative unit tile.

Step-by-step explanation:

Answer:

The answer is A

Step-by-step explanation:

PQ is equal to RQ so b=?

Answers

Answer: 17

Step-by-step explanation:

5 plus1000 equal what​

Answers

The answer to that is 1005 XDDD
The answer is 1005.
Have a good one!

Help please! I’ll give brainliest!

Answers

Answer:

the first

Step-by-step explanation:

becasue you have -4 and it drops by 5 each hour so your timing it by 5 so 5h then sinv=ce it drops its -5h.

Answer:

The answer should be B

Step-by-step explanation:

Which expressions is equivalent to 21-(-5)

Answers

Answer:

21 + 5

Step-by-step explanation:

A negate minus a negative equals a positive

Answer:

(-5)-21

Step-by-step explanation:

use the cummutitive property to make a new equation out of the original one to get (-5)-21

What is the solution set of \ x|x<-3\ cap\ x|x>5\ ?

Answers

Answer:

Let set A = {x|x<-3}

Let set B = {x|x>5}

The solution for set A could be graphically represented with a number line that contained an unshaded circle surrounding the integer -3 and all values to the left or less than -3 would be shaded.

The solution for set B could be graphically represented with a number line that contained an unshaded circle surrounding the integer 5 and all values to the right of 5 or greater than 5 would be shaded.

If you placed the two number lines close to each other, you would see that they do not intersect.

Thus there is no solution for the intersection of set A and set B as defined in the given problem.

Step-by-step explanation:

7. Which of the following illustrates the commutative property of multiplication?
(1) 5(2x) =(5-2)x
(2) 4(2x+5) = 4 - 2x+4-5
(3) x2 +5=5+x2
(4) 2x -3x = 2-3-X-X
show work pleasee

Answers

x^2 + 5 = 5 + x^2 will give you the same answer. Also know as the commutative property. Answer is (3)

Yen paid $10.50 for 2.5 pounds of pretzels. What price did she pay for each pound of pretzels?

The first step is to
by a power of 10, so the divisor is a whole number.
The next step is to
, by figuring out how many times 25 goes into 105.

Answers

The first step is to multiply by a power of 10, so the divisor is a whole number.

The nest step is to divide, by figuring out how many time 25 goes into 105 .

Step-by-step explanation:

i took the exam now

best estimate for 563 / 15

Answers

Answer: 37 8/15 or 37.53

Step-by-step explanation:

use math_way its amazing for math problems, if i could give a rating it would definitely get 5 stars.

its a website and a app i believe it can be used for ios and android

aka apple and everything else

btw i had to add that (_) <that in the name because it wont let me say it normally

You start at (4, -4). You move left 4 units and right 4 units. Where do you end?

Answers

Answer:

Step-by-step explanation:

(4 , - 4) -----> ( 4 - 4 + 4 , - 4 ) = ( 4 , - 4 )

Y=2× Y=×+1
A: (2/3, 1/3)
B: (1,2)
C: (2,1)
D: (1/3, 2/3)

Answers

Answer:

The answer is B: (1,2)

Step-by-step explanation:

(solved using elimination method)

-2x+y=0

y=x+1

-x+y=1

-2x+y=0

x+y=-1

-x=-1

x=1

-1+y=1

y=2

(x,y)=(1,2)

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