What is the answer for 3x-5x=3+4

Answers

Answer 1

Answer: 3x - 5x = 3 + 4
Combine like terms

2x = 7
Divide both sides by 2

x = 7/2

Answer 2

Answer: step 1. simplify
-2x = 7
step 2. divide both side by -2
-2x = 7
÷2 ÷2
x = -3.5
The answer for 3x - 5x = 3 + 4 is x = -3.5

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Sam needs to cut a piece of sheet metal into eight pieces it takes him five minutes to make each cut how many cuts will sam make

Answers

time=number of cuts times time it takes to make each cut

to cut something into 2 pieces, you need 1 cut
to cut into 3 pieces you need 2 cuts
therefor, to cut something into n pieces, it takes n-1 cuts
so 8piece is 8-1=7 cuts

time=number of cust times time per cut
time=7 times 5 minutes
times=35 minutes

you have to multiply the eight pieces by 5 because it takes him five minutes to cut one piece of metal

at a track meet,Jacob and daniel compete in 220 m hurdles. Daniels finishes in 3/4 of the a min.Jacob finishes with 5/12 of a min remaining.who ran the race in faster time?

Answers

Answer:

Jacob finished the race faster than Daniel.

Step-by-step explanation:

We have that,

Daniel completed the hurdle in $(3)/(4)$ of a minute i.e. 75% of a minute.

Jacob completed the hurdle with $(5)/(12)$ remaining of a minute i.e. 41.7% remaining of a minute.

Now, as we have that,

75% of a minute = 45 seconds

41.7% of a minute = 25 seconds

Since, Jacob had $(5)/(12)$ time remaining.

Thus, Jacob had = 60 - 25 = 35 seconds remaining.

So, Daniel ran in 45 seconds and Jacob ran in 35 seconds.

Hence, we get that, Jacob finished the race faster than Daniel.

Jacob

Further explanation

Given:

At a track meet, Jacob and Daniel compete in 220 m hurdles.

Daniels finishes in $(3)/(4)$ of the a min.

Jacob finishes with $(5)/(12)$ of a min remaining.

Question:

Who ran the race in faster time?

The Process:

Let us see the denominators. The least common multiple (LCM) of 4 and 12 is 12.

Let us draw the diagram that represents a minute.

$\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}$ 12 units represent in one minute.

Daniels finishes in $(3)/(4)$ of the a min.

$(3)/(4) = (9)/(12)} \rightarrow \boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}$ or 9 of 12 units.

Jacob finishes with $(5)/(12)$ of a min remaining, or 5 of 12 units. This means Jacob finishes in $(7)/(12)$ or 7 of 12 units, that is $\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}$

And now we conclude who ran the race in a faster time.

Daniels: $\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}$

Jacobs: $\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}\boxed{\circ}$

Because Jacob took the race in a shorter time, he was who ran the race in a faster time.

- - - - - - - - - -

Quick Steps

Daniels: in $\boxed{ \ (3)/(4) = (9)/(12) \ }$ of the a min.

$\boxed{(9)/(12) * 60 \ minutes = 45 \ seconds}$

Jacob: in $\boxed{ \ 1 - (5)/(12) = (7)/(12) \ }$ of the a min.

$\boxed{(7)/(12) * 60 \ minutes = 35 \ seconds}$

Jacob's time is shorter, so he's the fastest.

- - - - - - - - - -

Calculate the speed

Recall $\boxed{speed = distance / time}$

Daniels: $\boxed{speed = 220 \ m / 45 \ seconds = 4(8)/(9) \ m/s \ }$

Jacob: $\boxed{speed = 220 \ m / 35 \ seconds = 6(2)/(7) \ m/s \ }$

Thus, Jacob's speed proved greater than Daniels's speed.

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Keywords: at a track meet, Jacob and Daniel, compete in 220 m hurdles, Daniels, finishes, in 3/4 of the a min, Jacob, finishes, with 5/12 of a min, remaining, who, ran, the race, in faster time, diagram

Selma has 77 strawberries. Divide them into two groups so that for every 4 strawberries in group 1 there are 7 strawberries in group 2 how did you break it down

Answers

4x+7x=77
11x=77
77/11
x=7

You and your brother each start a child-care service. You spend $50 on supplies and plan to charge $10 per hour. Your brother spends $30 on supplies and plans to charge $8 per hour. How many hours will each of you have to work to earn the same amount of money?

Answers

The solution is, you'll both have to work for 10 hours to make the same amount of money. That amount of money is $50.

What is simplification?

Simplify simply means to make it simple. In mathematics, simply or simplification is reducing the expression/fraction/problem in a simpler form. It makes the problem easy with calculations and solving.

here, we have,

given that,

You spend $50 on supplies and plan to charge $10 per hour.

Your brother spends $30 on supplies and plans to charge $8 per hour.

Let X = hours worked,

and Y = money earned

This is your equation : y = 10x - 50

This is your brothers : y = 8x - 30

Now, we know that you have to work to make the same amount of $$ (y value)

So set it equal to each other, ** 10x-50 = 8x-30 **

10x-8x= -30+50

2x=20

x=10.

The answer is, you'll both have to work for 10 hours to make the same amount of money. That amount of money is $50.

To learn more on simplification click:

brainly.com/question/28996879

#SPJ2

You: spends $50 on supplies
  charges $10 per hour ⇔
[The number that 10 & 8 both have in
Brother: spends $30 on supplies common is 40]
charges $8 per hour ⇔
   ↓
You: 10 x 4= 40 [You'll work 4 hours to get the same amount of money.]
  ↓
Brother: 8 x 5= 40   [Your brother will work 5 hours to get the same amount of money.]

If a figure is a square then it is a regular quadrilateral is this true or false

Answers

True, because a square has 4 sides,because a quadrilateral has 4 sides, and it's regular because all the sides are congruent/equal/same.

A regular polygon has all equal sides and angles, a quadralateral means it has four sides, you are correct.

Jed filled his sandbox with 5 bags of sand. The bags of sand weighed 85.5 pounds altogether. How much did each bag of sand weigh?

Answers

If the total amount of sand that Jed put in his sandbox was 85.5 lbs, and he put 5 bags of sand in his sandbox, then all we need to do to find the amount that each bag weighed is to divide the total weight by the amount of bags he put in.

85.5 / 5 = 17.1

Each bag weighed 17.1 lbs.
Hope that helped! =)

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