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
Basile [38]
3 years ago
15

Two brothers decide that a 21-hour task is to be divided so thst the older brother works twice as long as the younger brother. H

ow long must the older brother work?​
Mathematics
2 answers:
Mice21 [21]3 years ago
7 0

Answer: the older brother must work for 14 hours.

Step-by-step explanation:

Let x represent the number of hours that the younger brother must work.

Two brothers decide that a 21-hour task is to be divided so that the older brother works twice as long as the younger brother. This means that the number of hours that the older brother must work is expressed as 2x.

Since the total number of hours is 21, then

x + 2x = 21

3x = 21

x = 21/3

x = 7

The number of hours that the older brother must work is

2x = 2 × 7 = 14 hours

lyudmila [28]3 years ago
3 0

Answer:

14 hours

Step-by-step explanation:

Let's call the task 3x

The older bro does twice as younger so it would be 2x long and younger brother work x long

Since the totsl of work is 3x = 21 x woul be 21÷3 = 7

the older brother must work 2 × 7 = 14 hours long

You might be interested in
please help me i need this done today report cards are coming out this Friday i tried solving them but i can't please help mee
k0ka [10]

Answer:

156.9 pls brain list me pla

5 0
3 years ago
The bull’s-eye on a target has diameter 2 in. What is the area of the bull’s-eye to the nearest tenth? Use 3.14 for π
777dan777 [17]

Answer:

20.3cm^2

Step-by-step explanation:

Bullseye has a circular shape. So area of a bulleyse = Pi x (radius) ^2

Díameter is 2 inches = 5. 08cm

But radius = diameter /2

Radius = 5.08cm /2

Radius = 2.54cm

Hence Area of bulleyse = 3.14 x (2.54) ^2

= 3.14 x 6. 451 cm^2

= 20.256 cm^2

=20.3cm^2 (to nearest tenth)

3 0
3 years ago
Which algebraic expression is a polynomial?​
SSSSS [86.1K]

Answer:

Polynomials in one variable are algebraic expressions that consist of terms in the form axn a x n where n is a non-negative (i.e. positive or zero) integer and a is a real number and is called the coefficient of the term. The degree of a polynomial in one variable is the largest exponent in the polynomial.

Step-by-step explanation:

hope this helps!!!!!

3 0
4 years ago
Does anyone know how to work this.
Shtirlitz [24]
I think it's C.

Let me know!
3 0
4 years ago
Read 2 more answers
Male and female high school students reported how many hours they worked each week in summer jobs. The data is represented in th
fgiga [73]

The values of data that might affect the statistical measures of spread and center is that: D. The males have a suspected significant high outlier.

<h3>What is a box and whisker plot?</h3>

A boxplot is also referred to as box and whisker plot and it can be defined as a type of chart that can be used to graphically represent the five-number summary of a data set with respect to locality, skewness, and spread.

In Mathematics, the five-number summary of any box and whisker plot include the following:

  • Minimum
  • First quartile
  • Median
  • Third quartile
  • Maximum

By critically observing the box and whisker plots which represent the number of hours the students worked in summer jobs, we can reasonably infer and logically deduce that male students have a significant high outlier because the maximum value (37) is very far from the third quartile (15).

Read more on boxplots here: brainly.com/question/14277132

#SPJ1

6 0
1 year ago
Other questions:
  • Smallville High School's Principal is concerned about his school’s Advanced Placement (AP) test scores. He wonders if there is a
    14·1 answer
  • WILL MARK THE BRAINIEST!!! LOTS OF POINTS!! HELP NOW
    8·1 answer
  • A group of friends equally split the dinner bill shown(82,28,52,33,29)if each person paid $16 how many friends paid
    15·1 answer
  • PLEASE HELP ME!!! 30 POINTS!!!
    6·1 answer
  • Whats the answer to this?
    6·1 answer
  • To make this pattern,has title a been reflected, translated,or rotated​
    10·2 answers
  • The function g(x) is a transformation of the cube root parent function,
    6·2 answers
  • The five number summary of a dataset was found to be:
    8·1 answer
  • A​ person's blood type is denoted with the letters​ A, B, and​ O, and the symbols​ + and - . The blood type​ A+ is read as A pos
    11·1 answer
  • Help me please:) will very much appreciate it
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!