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
77julia77 [94]
4 years ago
5

Emma buys packets of coloured beads.

Mathematics
1 answer:
ryzh [129]4 years ago
7 0

Answer:

purple:5

red:8

blue:4

You might be interested in
Given right triangle ABC with altitude BD drawn to hypotenuse AC. If AC =16 and DC=5 what is the length of BC in the simplest ra
Nana76 [90]

The length of BC is 4 \sqrt{5}.

Solution:

Given ABC is a right triangle.

AC is the hypotenuse and BD is the altitude.

AB and BC are legs of the triangle ABC.

AC = 16 and DC = 5

<u>Leg rule of geometric mean theorem:</u>

$\frac{\text { hypotenuse }}{\text { leg }}=\frac{\text { leg }}{\text { part }}$

$\Rightarrow \frac{AC}{BC}=\frac{BC}{DC}$

$\Rightarrow \frac{16}{x}=\frac{x}{5}$

Do cross multiplication.

\Rightarrow  16\times 5 = x\times x

\Rightarrow  80= x^2

\Rightarrow  16\times 5= x^2

Taking square root on both sides.

\Rightarrow  \sqrt{16\times 5} = \sqrt{x^2}

\Rightarrow  \sqrt{4^2\times 5} = \sqrt{x^2}

square and square roots get canceled, we get

\Rightarrow  4\sqrt{ 5} = x

The length of BC is 4 \sqrt{5}.

7 0
3 years ago
The Area of the net is 24 cm2. What is the side length of the cube?
Ymorist [56]
The side length of the cube is 6 cm.
4 0
4 years ago
Read 2 more answers
A social scientist wishes to conduct a survey. She plans to ask a yes/no question to a random sample from the U.S. adult populat
agasfer [191]

Answer:

The sample proportion from the sample of 900 is more likely to be close to the true population proportion, p.

Step-by-step explanation:

for the first one

6 0
3 years ago
Read 2 more answers
What equation best models this data? (Use y to represent the population in millions, and t to represent the year, assuming that
lapo4ka [179]

Answer:

y = 2.31x + 309.35

Step-by-step explanation:

Whenever you are checking for a best fitting equation you want to check if it has a constant slope.  If it does then the relation is linear and super easy.

So, since the t values are increasing by the same amount you want to see if the y values are  too.  And they are, each population entry is increasing by 2.31, this is the slope.  

Also, keep in mind you can caluclate slope with the equation \frac{y_2-y_1}{x_2-x_1}  here x is replaced by t though.

Now, since we know it's linear and we know the slope we can find the equation with the formula  y - y1 = m(x - x1) where again, x is replaced by t and m is the slope 2.31

I am just going to use the first point.  so x1 = t1 = 0

y - 309.35 = 2.31(x-0)

y = 2.31x + 309.35

Let me know if there was something you didn't understand.  

5 0
3 years ago
Y=23x y=-x+5y=−x+5 pls help
irina1246 [14]
Sorry only doing this for points
5 0
3 years ago
Other questions:
  • Identify the equation of the linear function through the points ​(- 2​,- 7​) and ​(1​,2​). Then state the rate of change of the
    13·1 answer
  • Identify the variation as direct, inverse, joint or combined.<br> y = 7x
    12·2 answers
  • What is 5% of 400 please add the formula for finding this if you can
    14·1 answer
  • Find the GCF of the terms of the polynomial. 18x4 – 27x3 – 36x2
    8·1 answer
  • Carson bought two loaves of bread and one dozen eggs at the grocery store yesterday he paid a total of $6.09.If one dozen of egg
    9·2 answers
  • What is the absolute value for: <br> |40|
    15·2 answers
  • Replace ? with =, &gt;, or &lt; to make the statement true.
    14·2 answers
  • Find the value of x.
    6·1 answer
  • How do you find the volume of a shape with 2 different heights and 1 extra block on the width??
    15·2 answers
  • Timmy is helping his grandpa on his chicken farm. Timmy has to pack 66 eggs into cartons, minimizing the packing cost. He can us
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!