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
ludmilkaskok [199]
3 years ago
12

The ratio of girls to boys is 2 to 5 if they're 80 girls how many boys are there?

Mathematics
1 answer:
I am Lyosha [343]3 years ago
8 0
2/5=80/?
2÷80=40
5×40=200
there is 200 boys
80:200
You might be interested in
Refer to the variable on the number of miles driven. the mean is 830.11 and the standard deviation is 42.19 miles. estimate the
Alex787 [66]
The proportion of buses traveling more than 900 miles would be 0.0485; multiply this by the total number of buses and you will have your answer.

We find the z-score associated with 900 miles:

z = (X - μ)/σ = (900-830.11)/42.19 = 1.66

Using a z-table (http://www.z-table.com) we see that the area under the curve to the left of this, less than this, is 0.9515.  This means that the area under the curve to the right of this, greater than this, would be 1-0.9515 = 0.0485.
8 0
3 years ago
Consider this algebraic expression:     –3x + x + 5 Use the algebra tiles to model the expression.
luda_lava [24]

For this case, we have the following expression:

-3x + x + 5

We simplify the expression:

If we add similar terms, taking into account that different signs are subtracted and the sign of the greater one is placed, we have that -3x + x = -2x

So, we have to:

-3x + x + 5 = -2x + 5

Answer:

-3x + x + 5 = -2x + 5

6 0
3 years ago
Read 2 more answers
Find the line y=a+bxy=a+bx which best approximates the data points (−3,−5),(−2,−17),(−1,−26),(1,−51),(2,−65).
dimaraw [331]

Answer:

y=-11.88x-39.93

Step-by-step explanation:

Plot the data

\begin{array}{cc}x&y\\-3&-5\\-2&-17\\-1&-26\\1&-51\\2&-65\end{array}

on the coordinate plane using graphing calculator. Then use linear approximation y=ax+b and determine that a=-11.88, b=-39.93.

The line that best fits these data is

y=-11.88x-39.93.

3 0
3 years ago
Does a function have to be continuous to be differentiable
xz_007 [3.2K]

Answer:

yes

Step-by-step explanation:

6 0
3 years ago
.634 a rational number
Andrew [12]

It is a rational number, because it's a terminating decimal and as such can be expressed as a fraction the numerator and the denominator of which are integers.

4 0
3 years ago
Other questions:
  • The average car sold from Dealership A is $25,700. If the sales person receives 1.5% commission on the price of the car, how muc
    9·1 answer
  • Nathan started with $50.32. He bought a T-shirt for $12.95 and a sweatshirt for $31.59. How much money does Nathan have left?
    15·1 answer
  • 32.4 miles per gallon her tank holds 12.7 gallon per tank how far can drive on one tank
    5·1 answer
  • What is the difference between the median and the range in the data set shown below?
    6·1 answer
  • What is the distance between -34 and 16
    8·1 answer
  • Can someone please help me​
    8·1 answer
  • Factorise y^6 - 64 as possible<br>​
    10·2 answers
  • Given that LABC = _DBE, which statement must be<br> true?
    14·1 answer
  • What is the rate of change seen in the graph below?
    14·2 answers
  • one (friend a) talks about computer science 80% of the time, and linguistics 20% of the time; the other (friend b) talks about l
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!