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3 years ago

Please need help ASAP

Mathematics

2 answers:

Slav-nsk [51]3 years ago

7 0

Answer:

A. 810

Step-by-step explanation:

All you need to do here is add the number of children between ages 0-10 and children of ages between 10-20.

500+310= 810

Hope this helps! :)

Ksivusya [100]3 years ago

3 0

Answer:

810 people are under the age of 20 are in Disney World

Step-by-step explanation:

Find the bars of the graph that are <em>before</em> the graph that indicates the age 20.

There are two bars, one with the ages between 0-10 another with the ages 10-20.

Add the results of both graphs.

810

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The average yearly salary of a lawyer is $26 thousand less than twice that of an architect. Combined, an architect and a lawye

Paha777 [63]

The architect earns $47000 yearly and the lawyer earns $68,000 yearly.

<h3>How to solve algebra problems?</h3>

Let x = salary of architect, in thousands

Let 2x - 26 be the salary of lawyer, in thousands

Thus, if their salary combined is $214 thousand, then we have the algebra expression;

2x + 2x - 26 = 214

4x - 26 = 214

4x = 214 - 26

4x = 188

x = 47, in thousands.

The architect earns $47000 yearly

The lawyer earns 2(47000) - 26000 = $68,000 yearly

Read more about Algebra Problems at; brainly.com/question/4344214

#SPJ1

5 0

2 years ago

Find the quation of the quadratic function with roots 0 and 4 and a vertex at (2,-2)

Nookie1986 [14]

Answer:

y = (1/2)x² -2x

Step-by-step explanation:

recall that the general equation of a quadratic function is:

y = Ax² + Bx + C

given that 0 and 4 are roots, that means when x = 0 and x = 4, then y = 0

From this we can get 2 points on the curve, namely, (0,0) and (4,0)

substituting these points one at a time into the equation above,

for the first point (0,0),

0 = A (0)² + b(0) + C

C = 0

hence the equation becomes: y = Ax² + Bx

for the 2nd known point (4,0)

0 = A(4)² + B(4)

0 = 16A + 4B (divide both sides by 4)

0 = 4A + B

B = -4A ------------(eq 1)

we are given a 3rd point, vertex at (2,-2)

for (2,-2)

-2 = A(2²) + B(2)

-2 = 4A + 2B (divide both sides by 2)

-1 = 2A + B (subtract 2A from both sides)

B = -1 -2A --------(eq 2)

solving the system of equations using the method of your choice in eq1 and eq 2 gives:

A = 1/2 and B = -2

hence the equation is

y = (1/2)x² -2x

7 0

3 years ago

HELP. How long is the minor axis for the ellipse shown below?

kifflom [539]

Given:

The equation of ellipse is

$\dfrac{(x+4)^2}{25}+\dfrac{(y-1)^2}{16}=1$

To find:

The length of the minor axis.

Solution:

The standard form of an ellipse is

$\dfrac{(x-h)^2}{a^2}+\dfrac{(y-k)^2}{b^2}=1$ ...(i)

where, (h,k) is center, if a>b, then 2a is length of major axis and 2b is length of minor axis.

We have,

$\dfrac{(x+4)^2}{25}+\dfrac{(y-1)^2}{16}=1$ ...(ii)

On comparing (i) and (ii), we get

$b^2=16$

Taking square root on both sides.

$b=\pm 4$

Consider only positive value of b because length cannot be negative.

$b=4$

Now,

Length of minor axis = $2b$

= $2(4)$

= $8$

So, the length of minor axis is 8 units.

Therefore, the correct option is B.

8 0

2 years ago

Due NOW!!! Please help!

tia_tia [17]

Answer:

At x = 7 and x= 1

Step-by-step explanation:

Set each equation equal to 0 and solve.

x - 7 = 0

x = 7

x-1 =0

x = 1

4 0

2 years ago

Read 2 more answers

(12y 2+17y-4)+(9y-13y+3)

IrinaVladis [17]

Answer:

4y+3

Step-by-step explanation:

8 0

3 years ago