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
stealth61 [152]
3 years ago
13

There are an even number of boys and an odd number of girls in lena’s Class.how many boys and girls could be in her class?show y

our work.
Mathematics
2 answers:
serious [3.7K]3 years ago
7 0

Answer:

11 girls and 10 boys. 11+10=21.

Vitek1552 [10]3 years ago
6 0
The answer is 11 girls and 10 boys. 11+10=21.
You might be interested in
heyyy! i haven't posted a question in a long time lolz. anyways, i really needed help with this!! if you can answer my question
Andre45 [30]
2 ones and 8 hundredths

00.00
the first zero is tens, ones, and after the decimal, to the right is the tenths, hundredths and so on
7 0
3 years ago
If a solution has 24g of sugar in 130ml of water, what is its concentration?
Jobisdone [24]

Answer: concentration = 15.58%

Step-by-step explanation:

Given: mass of sugar = 24 g = 24 ml   [ ∵ 1 g = 1 ml]

Volume of solution = Quantity of water + quantity of solute

= 130 +24 ml

= 154 ml

Concentration = \dfrac{mass\ of\ solute}{Volume\ of\ solution}\times100

=\dfrac{24}{154}\times 100\\\\\approx15.58\%

Hence, the concentration =15.58%

3 0
3 years ago
A random sample of 100 people was taken. Eighty of the people in the sample favored Candidate A. We are interested in determinin
riadik2000 [5.3K]

Answer:

Option b - not significantly greater than 75%.

Step-by-step explanation:

A random sample of 100 people was taken i.e. n=100

Eighty of the people in the sample favored Candidate i.e. x=80

We have used single sample proportion test,

p=\frac{x}{n}

p=\frac{80}{100}

p=0.8

Now we define hypothesis,

Null hypothesis H_0 : candidate A is significantly greater than 75%.

Alternative hypothesis H_1 : candidate A is not significantly greater than 75%.

Level of significance \alpha=0.05

Applying test statistic Z -proportion,

Z=\frac{\widehat{p}-p_0}{\sqrt{\frac{p_0(1-p_0)}{n}}}

Where, \widehat{p}=80\%=0.80 and p=75%=0.75

Substitute the values,

Z=\frac{0.80-0.75}{\sqrt{\frac{0.75(1-0.75)}{100}}}

Z=\frac{0.80-0.75}{\sqrt{\frac{0.1875}{100}}}

Z=\frac{0.05}{0.0433}

Z=1.1547

The p-value is

P(Z>1.1547)=1-P(Z

P(Z>1.1547)=1-0.8789

P(Z>1.1547)=0.1241

Now, the p-value is greater than the 0.05.

So we fail to reject the null hypothesis and conclude that the A is not significantly greater than 75%.

Therefore, Option b is correct.

7 0
3 years ago
What is a ratio of 625 : 1296 simplified?
Georgia [21]

Answer:

625: 1296

Step-by-step explanation:

625: 1296 cannot be further simplified because they share no common factor.  The decimal form around 0.5822531

7 0
2 years ago
Read 2 more answers
I will mark you brainliest and give 50 points if u help and pls I want the answer to both a and b if u give random answers witho
shusha [124]

Answer:

5a. 4w+24≤100

5b. Dimensions=31ft x 19 ft

      Area = 589ft²

Step-by-step explanation:

l=w+12

p=2l+2w

p=2(w+12)+2w

p=2w+24+2w

p=4w+24

The farmer has 100ft of fencing, so maximum that the perimeter (p) can be is 100, meaning (4w+24) has to be less than or equal to 100:

4w+24≤100

For the largest possible perimeter, all 100 of fencing will be used, so allow 100 to be equal to 4w+24)

100=4w+24

4w=76

w=19ft

l=w+12

l=19+12

l=31ft

The dimensions are 31ft x 19ft.

Area=lw

=31*19

=589ft²

4 0
3 years ago
Read 2 more answers
Other questions:
  • Angelica colored in 0.60 of the squares on her grid. What is the expression 0.60 as tenth in fraction
    11·1 answer
  • What do you do when the x is a negative but the answer for x is a positive?
    7·1 answer
  • What are the answers ?
    10·1 answer
  • Please help me! I will mark you as the best answer
    10·1 answer
  • The direct distance from a starting point to a finish line is 20 miles. Unfortunately, you can't take the direct route. If you t
    11·1 answer
  • Regina bought 10 pounds of fruit salad for a family party. The fruit salad contained 3 ½ pounds of oranges, 4 ¾ pounds of peache
    9·1 answer
  • 2) Key components of financial planning include all of the following except:
    11·1 answer
  • A bank account earns 6% simple interes per year if you deposit 1,000 and then do not make any additional deposits or withdrawals
    12·1 answer
  • Find the missing value of: -1 = 7 - ?
    5·2 answers
  • Can someone help me please?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!