1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alex Ar [27]
3 years ago
10

On one day, 4 chefs and 5 helpers earned $650.

Mathematics
1 answer:
Arlecino [84]3 years ago
6 0
4c + 5h = 650 and

5c + 6h = 800 where c are chefs, h are helpers

Start by finding an expression for c

4c + 5h = 650
4c = 650 -5h
c = (650- 5h)/4

Then substitute that into the second equation and solve for a number value for h
5 (650-5h)/4 + 6h = 800
(3250-25h)/4 + 6h = 800
Multiply both sides by 4
3250-25h + 24h = 3200
-h = -50
h = 50

Take that 50 and substitute it into the expression we have for c to get a number value for c

C= 650-5(50)/4
C = 650-250/4
C = 400/4
C= 100

Check your first equations, substituting $50 for the helpers and $100 for the chefs.

4 (100) + 5(50) =
400 + 250 = 650

5(100) + 6(50) =
500 + 300 = 800
You might be interested in
Factorise x2-10x-24 plz help ​
Papessa [141]

Answer:

(х-4)(х-6)

Step-by-step explanation:

х¹= 4

х²=6

easy

7 0
3 years ago
Read 2 more answers
If the width and length of a rectangle are both increased by 10%, by what percent does the area of the rectangle increase?
S_A_V [24]

Answer:

10%

Step-by-step explanation:

We know Perimeter of rectangle

= 2 (Length + Width)

If width and length are increased by 10%

New length= L + 10/100L = (1.1) L

New width = W + 10/100W = (1.1) W

Perimeter = 2 [(1.1) L + (1.1) W]

Perimeter = 2 (1.1) (L + W)

Perimeter = (2.2) (L + W)

Increase in perimeter = 2.2 (L + W) - 2 (L + W)

The increase in Perimeter = 0.2 (L + W)

Percent increase

= 0.2 (L + W)/2 (L + W) × 100

= 0.2/2 × 100

= 0.1 × 100

= 10%

I hope this helped and if it did, please mark as Brainliest.

7 0
2 years ago
Please look at the picture and explain your answer thanks
aniked [119]

Answer:

Step-by-step explanation:

Blue is 1 and a quarter.

Brown is Half

6 0
3 years ago
45/6 simplifyed into a mixed number
aniked [119]

Answer:

7 1/2

Step-by-step explanation:

How many times does 6 fully go into 45?

7 times.

7 times 6 is 42, so subtract that from 45 and you will get 3/6 left over after finding 7 as a whole number.

simplify 3/6: 1/2

5 0
3 years ago
There is a fire in the third floor of a building, 22 feet above the ground. The fire truck has a 16-foot tall ladder on top, and
Over [174]

Answer: Yes the ladder will reach the fire

Step-by-step explanation: Please refer to the attached diagram for details.

The fire is at point A, while the top of the truck is at point C. The fire is actually burning at 22 feet off the ground, but because the fire truck itself is already 6 feet off the ground, the point that would serve as the base of the building would be 16 feet from the third floor (which is 22 feet minus 6 feet). Hence, point A to point B is 16 feet. So we need to calculate if line AC (from the truck to the fire at the third floor, labeled as b) shall equal the length of the ladder which is 16-foot long.

The angle of the ladder with the top of the truck is 75 degrees. Therefore,

Sin 75 = opposite/hypotenuse

Sin 75 = 16/b

By cross multiplication we now have

b = 16/Sin 75

b = 16/0.9659

b = 16.56

If the distance from A to C is 16.56 feet, then the 16-foot long ladder would reach the fire.

8 0
3 years ago
Other questions:
  • Sonya expected to get 60$ for her birthday, but she only got 40$. what was the percentage decrease of the amount sonya recieved?
    11·1 answer
  • How to write a piecewise function with two absolute value?
    8·1 answer
  • What is 765903 rounded to the nearest thousand
    12·2 answers
  • yuna missed 5 points out of 100 points on her test. what decimal number represents the part of her math test that she answers co
    11·2 answers
  • If (a+7,b+3)=(0,7)find a and b​
    8·1 answer
  • Drake wants to save $750 so that he can take a class on computer analysis for cars. The class is being held on various dates ove
    10·1 answer
  • If u=(1,3) and v=(2,6), find u+v
    11·2 answers
  • Rearrange the equation A = xy to solve for x.
    6·1 answer
  • 3×3×5×5 as powers??<br>​
    6·2 answers
  • The scale factor from Drawing 1 to Drawing 2 is 41 2 over 3 %. Justify why Drawing 1 is a scale drawing of Drawing 2 and why it
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!