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
SashulF [63]
3 years ago
12

An old cell phone battery would last for 13 hours. The new battery lasts 29 percent longer. How long will the new battery last?

Mathematics
1 answer:
lana [24]3 years ago
6 0

Answer:

16.77 hours

Step-by-step explanation:

the new battery lasts 29 percent longer so you multiply 13 × 1.29 and you get

16.77 hours

rate as brainliest

You might be interested in
How does the graph of f(x) = (x − 1)2 relate to the basic function f(x) = x2?
Nadya [2.5K]

Answer:

Both functions are multiplied by 2.

Step-by-step explanation:

6 0
3 years ago
F(x) = x^2. What is g(x)?
Murrr4er [49]
C would be your answer i hope i helped you :) sorry if i’m incorrect. i’m not sure
6 0
2 years ago
1. There are 1,200 students at Woodland Hills Elementary. Approximately 600 of
fenix001 [56]

1,200 divide by 600 = 2 students

2 students multiply by 50% is 100 students.

So, approximately 100 students ride their bicycles home.

(If not correctly, I am truly sorry)

4 0
3 years ago
Nine students took the SAT. Their scores are listed below. Later on, they read a book on test preparation and retook the SAT. Th
SCORPION-xisa [38]

Answer:

t= 0.4933

t ≥ t ( 0.025 ,8 ) = 2.306

Since the calculated value of t= 0.4933 is less than t ( 0.025 ,8 ) = 2.306 therefore we accept the null hypothesis at 5 % significance level . On the basis of this we conclude that the book had no effect on their scores.

Step-by-step explanation:

We state our null and alternative hypotheses as

H0: ud= 0 Ha: ud≠0

The significance level is set at ∝= 0.05

The test statistic under H0 is

t= d`/ sd/√n

which has t distribution with n-1 degrees of freedom

The critical region is t ≥ t ( 0.025 ,8 ) = 2.306

Computations

Student       Scores before      Scores after    Difference           d²

                        reading book                    ( after minus before)

1                          720                   740             20                       400

2                        860                   860              0                           0

3                        850                   840             -10                       100

4                        880                   920             40                       1600

5                        860                   890             30                        900

6                        710                    720              10                         100

7                       850                    840              -10                       100

8                      1200                  1240             40                        1600

<u>9                      950                    970              20                           40</u>

<u>∑                    6930                  8020           140                         4840</u>

d`= ∑d/n= 140/9= 15.566

sd²= 1/8( 4840- 140²/9) = 1/8 (4840 - 2177.778) = 2662.22/8= 332.775

sd= 18.2422

t= 3/ 18.2422/ √9

t= 0.4933

Since the calculated value of t= 0.4933 is less than t ( 0.025 ,8 ) = 2.306 therefore we accept the null hypothesis at 5 % significance level . On the basis of this we conclude that the book had no effect on their scores.

7 0
3 years ago
Jenny wants to rent a truck for one day. She contacted two companies. Laguna’s Truck Rentals charges $20 plus $2 per mile. Salva
PolarNik [594]
20+2x=3x subtract 2x from both sides
20=x after 20 miles the total cost for both companies will be the same

PROOF
20+2(20)=3(20)
20+40=60
60=60
3 0
3 years ago
Other questions:
  • Simplify the expression 2.3w-7+8.1-3w
    6·1 answer
  • WRITE AN INEQUALITY
    13·1 answer
  • What are all the primes of 66
    11·2 answers
  • What is the value of y when X=10?
    5·1 answer
  • Is Crammer’s Rule always applicable when trying to solve a system of linear equations? Explain.
    14·2 answers
  • David hikes 2 ¼ miles in ½ an hour.
    13·1 answer
  • What is the answer to 51 / 489
    12·2 answers
  • What is the sum of (8 at 26-4)
    6·1 answer
  • Seven less than the product of a number n and
    11·1 answer
  • Determine whether the two ratios form a proportion.<br> 30/ 24 and 42/35
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!