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
photoshop1234 [79]
3 years ago
5

A STUDENT FINISHES THEIR FISR HALF OF AN EXAM IN 2/3 THE TIME IT TAKES HIM TO FINISH THE SECOND HALF. IF THE ENTIRE EXAM TAKES H

IM AN HOUR, HOW MANY MINUTES DOES HE SPEND ON THE FIRST HALF OF THE EXAM?
Mathematics
1 answer:
shepuryov [24]3 years ago
8 0

Answer: First half was 24 minutes

Step-by-step explanation:

Let the time taken to finish the second half be y.

Since the student used 2/3 of the second half time to finish the first half, first half = 2/3 × y = 2y/3

The entire exam is an hour which equals 60 minutes

First half + Second half = 60minutes

Note that first half is denoted as 2y/3 and second half is denoted by y.

2y/3 + y = 60

5y/3 = 60

Cross multiply

5y = 60 × 3

5y = 180

y = 180/5

y = 36

Second half took 36 minutes

Since first half is 2y/3, it will be:

(2×36) / 3

= 72/3

= 24minutes

First half took 24 minutes.

You might be interested in
A college student takes the same number of credits each semester. She had 8 credits when she started, and after 7 semesters, she
boyakko [2]

Answer:

12 credits per semester

Step-by-step explanation:

she has 92 in the end but she started off with 8 so your first step is to subtract 8 from 92 which gives you 84 once you get 84 you divide that by 12 you get 7 which means she got 12 credits in each of her 7 semeters

6 0
2 years ago
Please answer the question
shusha [124]
The answer should be C. 3
6 0
3 years ago
This is the last question need answered so please help me
shusha [124]
Assuming that is a square pyramid

that is the square base+4 triangles
that is
side^2+4(1/2bh)
where b=side=14in
and h=height=13in

surface area=14^2+4(1/2)(14)(13)
SA=196+(2)(182)
SA=196+364
SA=560 square inches
6 0
3 years ago
In the above bridge, line segment BD is the perpendicular bisector of line segment AC. For the bridge to be safe, Triangle ABD i
klasskru [66]

Answer: we can get the sequence of reasons with help of below explanation.

Step-by-step explanation:

Here It is given that, line segment BD is the perpendicular bisector of line segment AC. ( shown in below diagram)

By joining points B with A and B with C ( Construction)

We get two triangles ABD and CBD.

We have to prove that : Δ ABD ≅ Δ CBD

      Statement                                                  Reason

1. AD ≅ DC                                    1. By the property of segment bisector

2. ∠BDA ≅ ∠ BDC                        2. Right angles

3. BD ≅ BD                                   3. Reflexive

4.  Δ ABD ≅ Δ CBD                      4. By SAS postulate of congruence


8 0
3 years ago
Describe the effect an increase in i, the interest rate applied to the present value, has on the monthly payment P in the formul
VARVARA [1.3K]

Answer:

B. An increase in i, the interest rate, will create an increase in P, the monthly payment.

Step-by-step explanation:

We have the formula for the monthly payment as,

P=\frac{i \times PV}{1-(1+i)^{-n} },

where P = monthly payment, i = rate of interest, PV = present value and n = time period.

Now, as i increase we get that (1+i) increases and so (1+i)^{n} increases.

This gives us that, \frac{1}{(1+i)^{n} } decreases and so 1-\frac{1}{(1+i)^{n}} decreases

Therefore, \frac{1}{1-(1+i)^{-n} } increases.

So, we get that as i increases , the value of P will increase.

Hence, option B is correct.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Suppose Randolph decides that the radius of his pool will be 50 meters. What volume of water, in cubic meters, will be needed to
    8·1 answer
  • 5. Kevin had $15 with him. His mother gave him $10 and his father also gave him some
    12·1 answer
  • Ann cleans an apartment in 12 hours and liz cleans an apportment in 18 hours. How long would it take to clean an appartment toge
    8·1 answer
  • Is 4/6 bigger than 9/12
    6·1 answer
  • Please help ill give u a ( b r i l l i a n t)
    5·1 answer
  • Lily likes to collect records. Last year she had 15 records in her collection. Now she has 24 records.
    6·2 answers
  • Can someone help me please?
    13·2 answers
  • The students of Lincoln High School are raising money to support the sports teams. A local organization donated boxes of popcorn
    11·1 answer
  • : West Gorham High School is to be located at the population center of gravity of three communities: Westbrook, population 16,00
    13·1 answer
  • You and your best friend are both on the swim team. You want to beat your friend at the next swim meet so you
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!