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
Vikki [24]
3 years ago
10

Which expressions are equivalent to the expression 32 ÷ (8 – 4)? Choose exactly two answers that are correct. A. 18 – 2 ÷ 2 B. 4

8 ÷ (10 – 4) C. 15 – 21 ÷ 3 D. 36 – 15 ÷ 3 + 1
Mathematics
1 answer:
kap26 [50]3 years ago
3 0
32 \div (8-4)=32 \div 4=8 \\ \\
A. \\
18-2 \div 2=18-1=17 \\ \\
B. \\
48 \div (10-4) = 48 \div 6=8 \\ \\
C. \\
15-21 \div 3=15-7=8 \\ \\
D. \\
36 - 15 \div 3 +1=36 - 5+1=31+1=32

B and C are equivalent to the expression.
You might be interested in
A certain disease occurs most frequently among older women. Of all age groups, women in their 60s have the highest rate of breas
Law Incorporation [45]

Answer:

The probability that a woman in her 60s has breast cancer given that she gets a positive mammogram is 0.0276.

Step-by-step explanation:

Let a set be events that have occurred be denoted as:

S = {A₁, A₂, A₃,..., Aₙ}

The Bayes' theorem states that the conditional probability of an event, say <em>A</em>ₙ given that another event, say <em>X</em> has already occurred is given by:

P(A_{n}|X)=\frac{P(X|A_{n})P(A_{n})}{\sum\limits^{n}_{i=1}{P(X|A_{i})P(A_{i})}}

The disease Breast cancer is being studied among women of age 60s.

Denote the events as follows:

<em>B</em> = a women in their 60s has breast cancer

+ = the mammograms detects the breast cancer

The information provided is:

P(B) = 0.0312\\P(+|B)=0.81\\P(+|B^{c})=0.92

Compute the value of P (B|+) using the Bayes' theorem as follows:

P(B|+)=\frac{P(+|B)P(B)}{P(+|B)P(B)+P(+|B^{c})P(B^{c})}

            =\frac{(0.81\times 0.0312)}{(0.81\times 0.0312)+(0.92\times (1-0.0312)}\\

            =\frac{0.025272}{0.025272+0.891296}

            =0.02757\\\approx0.0276

Thus, the probability that a woman in her 60s has breast cancer given that she gets a positive mammogram is 0.0276.

4 0
3 years ago
Read 2 more answers
Geometry help please! Match the reasons with the statements
Alex73 [517]
  • Given ⇔  1. ∠PRS and ∠VUW are supplementary
  • Angles forming a linear pair sum of 180°  ⇔ 3. ∠PRS + ∠SRU = 180°
  • Definition of Supplementary angle   ⇔ 2. ∠PRS + ∠VUW = 180°
  • Transitive property of equality  ⇔ 4 . ∠PRS + ∠VUW  = ∠PRS + ∠SRU
  • Algebra  ⇔ 5. ∠VUW =  ∠SRU
  • Converse of Corresponding angle Postulate ⇔ Line TV || Line QS

<u>Step-by-step explanation:</u>

Here we have , ∠PRS and ∠VUW are supplementary . We need to complete the proof of TV || QS , with matching the reasons with statements .Let's do this :

  • Given ⇔  1. ∠PRS and ∠VUW are supplementary
  • Angles forming a linear pair sum of 180°  ⇔ 3. ∠PRS + ∠SRU = 180°
  • Definition of Supplementary angle   ⇔ 2. ∠PRS + ∠VUW = 180°
  • Transitive property of equality  ⇔ 4 . ∠PRS + ∠VUW  = ∠PRS + ∠SRU
  • Algebra  ⇔ 5. ∠VUW =  ∠SRU
  • Converse of Corresponding angle Postulate ⇔ Line TV || Line QS

Above mentioned are  , are the statements matched with expressions on right hand side (RHS)  .

  • The Corresponding Angles Postulate states that, when two parallel lines are cut by a transversal , the resulting corresponding angles are congruent .
  • The converse states: If corresponding angles are congruent, then the lines cut by the transversal are parallel.
5 0
3 years ago
Find the simple interest earned in an account with $300 at 5% annual interest for 7 years.
Fiesta28 [93]

Option A

The simple interest earned is $ 105

<em><u>Solution:</u></em>

Given that, $300 at 5% annual interest for 7 years

Therefore,

Principal = $ 300

Rate of interest = 5 %

Number of years = 7

<em><u>The simple interest is given by formula:</u></em>

Simple\ Interest = \frac{p \times n \times r }{100}

Where,

p is the principal

r is the rate of interest

n is the number of years

<em><u>Substituting the values in formula,</u></em>

Simple\ Interest = \frac{300 \times 7 \times 5 }{100}\\\\Simple\ Interest = 3 \times 7 \times 5\\\\Simple\ Interest = 105

Thus simple interest earned is $ 105

8 0
3 years ago
What is the value of n in this equation?<br><br> 3^5⋅3^7=3n<br><br> Enter your answer in the box.
Vladimir [108]
Use photo math!! it always gives me all the answers
5 0
3 years ago
Can someone please help
Alika [10]
The first option is the one you should pick
4 0
3 years ago
Read 2 more answers
Other questions:
  • A bathtub is draining at a constant rate. After 2 minutes, it holds 30 gallons of water. Three minutes later, it holds 12 gallon
    13·1 answer
  • If you are going 50 miles per hour, how many feet per second are you traveling?
    9·1 answer
  • From a bag of 5 red and 6 green marbles, a red marble is drawn and not replaced. Then a green marble is drawn what is the probab
    13·1 answer
  • Jordan is playing a video game. For every 35 stars she collects, she gets 4,000 points. Her record is 86,000 points. Which of th
    14·2 answers
  • Consider the series ∑n=1[infinity]2nn!nn. Evaluate the the following limit. If it is infinite, type "infinity" or "inf". If it d
    9·1 answer
  • To decrease an amount by 70%, what single multiplier would you use? How do i work this out?
    10·1 answer
  • (−1)^3⋅(−1)^2<br> simplify
    8·1 answer
  • We know 8 x 5 = 40
    12·2 answers
  • PLEASE HELP ME, FIRST ANSWER WILL GET BRAINLEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    15·1 answer
  • Tell whether DEF and GEF can be proven congruent​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!