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3 years ago

How do I solve this question

Mathematics

2 answers:

Grace [21]3 years ago

6 0

Just plugin the values of k and m into the equations listed so that D to origin = B to origin and A to origin = C to origin.

The answer is c.

Hoochie [10]3 years ago

5 0

One crucial fact about parallelograms we can take advantage of is that <em>their diagonals bisect each other - </em>they split one another in half, in other words. One thing we know about halves is that one half is always equal to the other, so looking at the halves of these diagonals, we can make two conclusions:

$m+9.1=4k-3.5\\m=2.6k$

From these two equations, we have enough information to find k. Using the second equation, the substitution property of equality lets us replace the m in the first with 2.6k, giving us the equation

$2.6k+9.1=4k-3.5$

by adding 3.5 and subtracting 2.6k from both sides, we get all of our k's on one side and all of our constants on the other:

$9.1 + 3.5 = 4k-2.6k\\12.6=1.4k$

Diving both sides by 1.4, we find that

$k=12.6/1.4=9$

The only option with k = 9 is C., so that's our answer.

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A una persona le ofrecieron dos trabajos de vendedor. En la empresa A, le ofrecieron al mes un sueldo base de $6 000 más una com

Dominik [7]

Concluimos que a partir de 21 piezas se gana más en la empresa B.

<h3>¿Cuanto debe vender para que le paguen más en la empresa B?</h3>

Si definimos el número de piezas vendidas como x, la cantidad que le pagan en la empresa A es:

A(x) = $6000 + $20*x

Y lo que le pagan en la empresa B es:

B(x) = $6000 + x^2

Queremos ver para que valor de x, se da que B(x) > A(x).

Entoces resolvamos esa inequación.

6000 + 20*x < 6000 + x^2

20x < x^2

20 < x

x debe ser más grande que 20, entonces concluimos que a partir de 21 piezas se gana más en la empresa B.

Sí quieres aprender más sobre inecuaciones, puedes leer:

brainly.com/question/23023694

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2 years ago

Which labeled line is on plane R?<br> 9<br> S<br> O line<br> Oline e<br> O<br> line SR<br> line g

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3 years ago

Niamh runs 6 km in 30-minutes what is the average speed in km h

SIZIF [17.4K]

Step-by-step explanation:

Speed = Distance / Time

given distance = 6km

time = 30 minutes = 30/60 hr = 1/2hr

speed =

$\frac{6}{\frac{1}{2} } \\ = 6 \div \frac{1}{2} \\ = 6 \times 2 \\ = 12 \frac{km}{h}$

4 0

3 years ago

Read 2 more answers

Zack has a old car. He wants to sell it for 60% off the current price. The market price is $500. How much money would he receive

Snowcat [4.5K]

Zack would receive $200. You have to make 60% as a decimal= 0.60 then multiply $500*0.60= $300 then you subtract $500-$300=$200
(Hope this works!!)

6 0

3 years ago

Part 1: What mistake did AJ make in the graph?

grigory [225]

Answer:

Part 1) AJ drawn the parabola opening upwards, instead of drawing it opening downwards

Part 2) see the explanation

Step-by-step explanation:

Part 1) What mistake did AJ make in the graph?

we have

$f(x)=-(x+2)^2-1$

This is the equation of a vertical parabola written in vertex form

The parabola open downward (because the leading coefficient is negative)

The vertex represent a maximum

The vertex is the point (-2,-1)

therefore

AJ drawn the parabola opening upwards, instead of drawing it opening downwards

Part 2) Evaluate any two x-values (between -5 and 5) into AJ's function. Show your work. How does your work prove that AJ made a mistake in the graph?

take the values x=-4 and x=4

For x=-4

substitute the value of x in the quadratic equation

$f(x)=-(-4+2)^2-1\\f(x)=-5$

For x=4

substitute the value of x in the quadratic equation

$f(x)=-(4+2)^2-1\\f(x)=-37$

According to AJ's graph for the value of x=-4 the function should be positive, however it is negative and for the value of x=4 the function should be positive and the function is negative

therefore

AJ made a mistake in the graph

8 0

3 years ago