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
Nutka1998 [239]
3 years ago
12

Can someone help with 6

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
8 0

A. there are 20 boys and 30 girls.

B.

68.7 out of 100 Boys

Girls im not sure, maybe someone else can answer that sorry




Hope I'm right and this helps sorry i didn't get girls.

You might be interested in
Joel made egg sandwiches and tuna sandwiches in the ratio 2:3. He then made 15 more tuna sandwiches and the ratio changed to 1:3
Ksenya-84 [330]
So 2e:3t 3t+15=1e:3e so

2e:3t
3t+15
1e:3t
1e:3t=2e:6t
so 2e:6e
2e:3t+15=2e:6t
15=3t
t=5
2+3=5 units
5 times 5=25
he made 25 samiches in all
check
e:t=10:15=2:3
15+15=30
10:30=1:3
checks

he made 25 sammiches origonaly

8 0
3 years ago
The radius of a circular track is 0.2 mile. Ellie ran around 3 times. How many kilometers did she run
My name is Ann [436]
Circumference = 2πr
So the circumference of the track is C = 2π .2  or .4π
3 times around the track is .4π x 3 or 1.2π  - this is the answer but most teachers will want you to use 3.14 for pi.
so 1.2 x 3.14 = 3.768 km

Do you notice that I waited until the end to use the actual value of pi (3.14) in my calculations.
Keeping things in pi units until the very end saves time.  
6 0
3 years ago
The cost of a pair of boots at a certain store is 145% of the cost of a pair of sneakers. The pair of sneakers costs $21.
Vilka [71]

Answer:

so $21+45%=30.45. meaning that pair of boots cost 30.45 so two pairs of boots would cost $60.90

5 0
3 years ago
Read 2 more answers
Use the standard norml distribution or the t-distribution to construct a 99% confidence interval for the population mean. Justif
dalvyx [7]

Answer:

E) we will use t- distribution because is un-known,n<30

the confidence interval is (0.0338,0.0392)

Step-by-step explanation:

<u>Step:-1</u>

Given sample size is n = 23<30 mortgage institutions

The mean interest rate 'x' = 0.0365

The standard deviation 'S' = 0.0046

the degree of freedom = n-1 = 23-1=22

99% of confidence intervals t_{0.01} =2.82  (from tabulated value).

The mean value = 0.0365

x±t_{0.01} \frac{S}{\sqrt{n-1} }

0.0365±2.82 \frac{0.0046}{\sqrt{23-1} }

0.0365±2.82 \frac{0.0046}{\sqrt{22} }

0.0365±2.82 \frac{0.0046}{4.690 }

using calculator

0.0365±0.00276

Confidence interval is

(0.0365-0.00276,0.0365+0.00276)

(0.0338,0.0392)

the mean value is lies between in this confidence interval

(0.0338,0.0392).

<u>Answer:-</u>

<u>using t- distribution because is unknown,n<30,and the interest rates are not normally distributed.</u>

4 0
3 years ago
No clue how to do this.
tatiyna

Answer:

Look at the graph, on the left side it says snow on the ground, and it starts on 5, as the storm continued more fell. nvm.

Step-by-step explanation: The answer to your question is 5, because that is how much is on the ground at the beggining.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Simplify the following expression: (Multiple Choice)
    9·1 answer
  • Find a solution for the equation y = 4x - 3.
    13·1 answer
  • Find the unit price rounded to the nearest cent: 5.8 lbs for $4.89.
    11·1 answer
  • Helppppppp pleaseeeeee
    8·1 answer
  • Urgent! Please heeeeeeeeeeeeelp
    12·2 answers
  • Please answer 7 and 8, thank you guys for helping! &lt;3
    6·2 answers
  • What is the domain for the piece of the function represented by f(x) = x + 1? x &lt; –1 –1 ≤ x ≤ 1 1 ≤ x &lt; 2 x &gt; 1
    14·1 answer
  • The sum of two numbers is -5, and the sum of the squares of the two numbers is 17. What are the two numbers? Explain your reason
    7·1 answer
  • Please help ASAP!!!!!!!
    11·1 answer
  • What is the length of segment BE?<br><br> A) 2<br> B) 4<br> C) 6<br> D) 8
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!