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kifflom [539]
3 years ago
13

Need help with this answer

Mathematics
1 answer:
ioda3 years ago
3 0

Answer:

(2,2) is your answer :)

Step-by-step explanation:

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Which expression is equivalent to 4(23)?
Radda [10]

Answer:

4(20+3)

Step-by-step explanation:

you can just add 20+3 to make the (23) part of the equation it's very simple dont make it complicated luv

4 0
3 years ago
Haley opened a savings account and deposited $200 as
Natali5045456 [20]

Answer:

$320

Step-by-step explanation:

5 0
3 years ago
Mathematics, 17.03.2021 23:50 burners
atroni [7]

9514 1404 393

Answer:

  1. 10 study all three
  2. 8 study only math and chem

Step-by-step explanation:

1. Adding the numbers of those who study a given subject counts ...

  • once -- those who study only one subject
  • twice -- those who study exactly two subjects
  • three times -- those who study all three subject.

That total is 40 +48 +44 = 132. When we subtract from this the total number of students, we get 132 -80 = 52, the number who study exactly 2 subjects plus twice the number who study all three.

From this, we can subtract the number who study exactly 2 subjects, leaving twice the number who study all three. 52 -32 = 20. So, 10 students study all three subjects.

__

2. Adding the numbers of those who study physics and another subject, we have 20+24 = 44. Subtracting twice the number who study all three gives the total of those how study only two subjects, one of which is physics. That total is 44 -20 = 24. So, of those 32 who study exactly two subjects, the remaining 32 -24 = 8 must be students who study only math and chemistry.

_____

It may be helpful to see the matrix of equations the problem statement describes. If we use the variables m, p, c, mp, mc, pc, mpc in that order to represent numbers of 1-subject, 2-subject, and 3-subject students, the augmented matrix looks like this.

  \left[\begin{array}{ccccccc|c}1&1&1&1&1&1&1&80\\0&1&0&1&0&1&1&40\\1&0&0&1&1&0&1&48\\0&0&1&0&1&1&1&44\\0&0&0&1&0&0&1&20\\0&0&0&0&0&1&1&24\\0&0&0&1&1&1&0&32\end{array}\right]

The solution is m=20, p=6, c=12, mp=10, mc=8, pc=14, mpc=10. The bold values are the ones this question is asking about.

3 0
3 years ago
What is the smallest integer that can be divided by the product of a prime number and 7 while yielding a prime number?
11111nata11111 [884]

Answer:

(D). 28

Step-by-step explanation:

We have been given that the smallest integer that can be divided by the product of a prime number and 7 while yielding a prime number.  

We know that smallest prime is 2. The product of 2 and 7 is 14.

Let us divide our given numbers by 14.

(A) 7.

\frac{7}{14}=\frac{1}{2}

The quotient is not a integer or prime number.

(B). 14

\frac{14}{14}=1

We know that 1 is not a prime number.

(C) 24.

\frac{24}{14}=\frac{12}{7}

The quotient is not a integer or prime number.

(D). 28

\frac{28}{14}=2

Since 2 is a prime number, therefore, 28 is the smallest integer that can be divided by the product of a prime number and 7 and yield a prime number.

4 0
3 years ago
Can someone help me please is due tomorrow!
loris [4]

Step-by-step explanation:

hello friend a I can work out for you though watsapp and many other questions

6 0
3 years ago
Read 2 more answers
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