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
stiv31 [10]
2 years ago
14

In a certain chemical the ratio of zinc to copper is 4 to 15. A jar of the chemical contains 345 of copper how many grams of zin

c does it contain ?
Mathematics
1 answer:
vekshin12 years ago
7 0

Answer:

92.

Step-by-step explanation:

By proportion the mass of zinc = (345/ 15) * 4

= 92.

You might be interested in
2/5 of 2/3
Vilka [71]

Answer:

4/15 is your answer my friend

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Which expressions are polynomials?
igor_vitrenko [27]

Option A: z + 1

Option B: 6 + w

Option D: 2 x^{4}-y

Solution:

Let us first define the polynomial.

A polynomial can have constants, variables, exponents and fractional coefficients.

A polynomial cannot have negative exponents, fractional exponents and never divided by a variable.

<u>To find which expressions are polynomial:</u>

Option A: z + 1

By the definition, z + 1 is a polynomial.

It is polynomial.

Option B: 6 + w

By the definition, 6 + w is a polynomial.

It is polynomial.

Option C: y^{2}-\sqrt[3]{y}+4

y^{2}-\sqrt[3]{y}+4=y^{2}-{y}^{1/3}+4

Here, y have fractional exponent.

So, it is not a polynomial.

Option D: 2 x^{4}-y

By the definition, 2 x^{4}-y is a polynomial.

It is polynomial.

Hence z + 1, 6 +w and 2 x^{4}-y are polynomials.

6 0
3 years ago
Evaluate the expression if a = 5, b = 12 and c = 4.
Natalija [7]

3 because 2*12 24 24/8 is 3 hope this helps

4 0
3 years ago
Read 2 more answers
(PLS HELP QUICK POINTS)
ICE Princess25 [194]

Answer:

Step-by-step explanation:

To make a guess as to the volume, it may be easier to guess in cups rather than centimeters or inches. One may visualize that a 12 ounce soda can is about 1.5 cups. This is equivalent to 354.88 cubic centimeters or 21.656 cubic inches.

4 0
2 years ago
Please answer the question in the photo:
Vika [28.1K]

Answer:

\fbox{8x+36}

Step-by-step explanation:

1. Use the distributive property to write the problem without parentheses. The distributive property says that you can multiply a number next to parentheses by all the numbers inside parentheses. The picture below explains.

4(2x+9)=\\\\(4*2x)+(4*9)=\\\\4(2x+9)= 8x+36

Therefore, your answer is

\fbox{8x+36}

6 0
3 years ago
Other questions:
  • I would like to know the process for dis ive been struggling on them. i tried to ask the teacher but they made it more confusing
    13·1 answer
  • A car wash detailed 288 cars in 9 hours. At what rate did the car wash detail cars in cars per hour? A. 31 cars per hour B. 33 c
    10·1 answer
  • WILL MARK BRAINLIEST
    7·1 answer
  • What is the length x of a side of the small inner square? Drawing is enclosed in OS link.
    15·1 answer
  • A pair of dice is rolled 50 times. What is the probability that a sum of 6 is rolled exactly 6 times? Round your answer to the n
    7·1 answer
  • 1
    5·1 answer
  • What is the value of x?<br> sin 55' = COS 3<br> Fnter your answer in the box
    13·1 answer
  • Will give whoever answers correctly Brainliest
    11·2 answers
  • What’s the opposite of the number of -13
    6·1 answer
  • Which function has exactly one zero?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!