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
hoa [83]
4 years ago
8

An alloy consists of nickel, zinc, and copper in the ratio 2:7:9.

Mathematics
1 answer:
tia_tia [17]4 years ago
5 0

Answer:

Alloy = 12.6 lbs.

Step-by-step explanation:

( 2/7 ) = ( Nickel /4.9)

Nickel = 1.4 lbs.

Ratio of Copper to Zinc:

( 9/7 ) = ( Copper /4.9)

Copper = 6.3 lbs.

Alloy = Zinc + Nickel + Copper

Alloy = 4.9 lbs. + 1.4 lbs. + 6.3 lbs.

Alloy = 12.6 lbs.

You might be interested in
For each story, write an equation that describes the relationship between the two quantities.
pentagon [3]

Key:

d= Diego

l= Lin

A. l=x+\frac{2}{5} x

B. d=x-\frac{3}{10} x

C. l=\frac{4}{7} x

3 0
3 years ago
Read 2 more answers
HELPEHELP
xz_007 [3.2K]

Answer:

The equation should be 2.5x+1.8=59.3

Step-by-step explanation:

First, subtract the 1.8 dollars from the 59.3. You will get 57.5. Divide it by 2.5 and you will get the number 21 as x.

3 0
3 years ago
The area of the green square is 9ft. The area of the yellow square is 25 ft.
Alex_Xolod [135]

Answer:

B

Step-by-step explanation:

a²+b²=c²

3²+b²=5²

b²=5²-3²

b²=25-9=16 answer is 16

3 0
3 years ago
Find the equation of the line (0,-5) and (5,0)
liraira [26]
I think it is 4.5 but I might be wrong
7 0
3 years ago
Read 2 more answers
Find an equation of the circle whose diameter has endpoints (2,3) and (-4,5)
natka813 [3]

Answer:

(x+1)² + (y-4)² = 10

Step-by-step explanation:

The diameter of a circle has the endpoints at (2,3) and (-4,5).

Therefore, the length of the diameter is given by

\sqrt{(2-(-4))^{2}+(3-5)^{2}} = 2\sqrt{10}

Hence, the radius of the circle is √10.

Now the midpoint of the line joining (2,3) and (-4,5) will be the center of the straight line.

Hence, the center will be at (\frac{2-4}{2},\frac{3+5}{2}) =(-1, 4)

Therefore the equation of the circle is  

(x+1)² + (y-4)² = (√10)²

⇒  (x+1)² + (y-4)² = 10 (Answer)

7 0
3 years ago
Other questions:
  • What is the completely factored form of the expression 16x^2+8x+32
    6·2 answers
  • 6) A slope of -2 and goes through point (6,-3).<br><br> What is the intercept?
    9·1 answer
  • Jacks wild souvenirs shop is selling all shirts for $10 each and all flip flops for $5 per pair. At the end of one day jacks shi
    14·1 answer
  • An airplane flies with a constant speed of 920 km/h. How far can it travel and 4 hours 12 minutes?​
    7·1 answer
  • How do you do this problem?
    5·1 answer
  • A parallelogram has sides of lengths 8 and 6, and one angle is 55°. find the lengths of the diagonals. (round your answers to tw
    15·1 answer
  • Find the measure of angle 1 given the following: angle 3 and angle 4 are complementary (angles add up to 90 degrees), angle 2 is
    13·1 answer
  • Write a single translation that is equivalent to T
    6·1 answer
  • Solve the system of equations.<br> 9x + 4y = 6<br> 9x + 5y = -33<br> X =<br> y =
    6·1 answer
  • Nina can type 128 words in 4 minutes. At this rate, how many words can Nina type in an hour.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!