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2 years ago

PLS HELPP- I NEED AN ANSWER ASAP BRAINLY WILL BE GIVEN~

Mathematics

2 answers:

olganol [36]2 years ago

7 0

X-9 and x+-9 are equal

AlladinOne [14]2 years ago

6 0

Answer:

The answer is equal!

Step-by-step explanation:

It's equal!

Hope this helped

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Find the area of the shaded region to the nearest tenth

alexira [117]

Answer:

B. A = 119.1 in.²

Step-by-step explanation:

A = area of trapezoid - area of circle

A = ½(b1 + b2)h - πr²

A = [½(27 + 12)(14) - 3.14159(7²)] in.²

A = 119.1 in.²

3 0

3 years ago

Find the simultaneous solution of the following pairs of equations using an algebraic method: x=1+2y 2x+y=17. Please also give a

AnnyKZ [126]

The solution is x = 7 and y= 3

<em><u>Solution:</u></em>

Given pairs of equation are:

x = 1 + 2y ------- eqn 1

2x + y = 17 ------- eqn 2

We have to use algebraic method

Algebraic method involves substitution and elimination method

Let us use the substitution method

From equation 1, we can see that x is equal to 1 + 2y. If we substitute this for y in equation 2, we have:

2(1 + 2y) + y = 17

Solve for brackets

2 + 4y + y = 17

Combine the like terms which has same variable

2 + 5y = 17

5y = 17 - 2

5y = 15

Divide both sides of equation by 5

y = 3

So the value of y is 3. This value of y can be substituted into either equation 1 or 2 to find the value of x

Substitute y = 3 in eqn 1

x = 1 + 2(3)

x = 1 + 6

x = 7

So the solution is x = 7 and y = 3

6 0

3 years ago

Calcula para la razón trigonométrica considerando la razón correspondiente del ángulo opuesto:Sen (-45º)

Lostsunrise [7]

Answer:

$sen(-45^{o})-\frac{\sqrt{2}}{2}$

Step-by-step explanation:

Para resolver este problea podemos comenzar con las identidades pares e impares, las cuales nos dicen que:

sen(-u)=-sen(u)

por lo que podemos reescribir nuestro problema como:

sen(-45°)=-sen(45°)

Luego podemos tomar los triángulos comunes (ver imagen adjunta).

y calcular la razón de seno en donde:

$sen \theta = \frac{opuesto}{hipotenusa}$

para obtener:

$sen(-45^{o})=-\frac{1}{\sqrt{2}}$

ahora podemos racionalizar la fracción para obtener:

$sen(-45^{o})=-\frac{1}{\sqrt{2}}*\frac{\sqrt{2}}{\sqrt{2}}$

$sen(-45^{o})=-\frac{\sqrt{2}}{2}$

7 0

3 years ago

The function gives the distances (in feet) traveled in time t (in seconds) by a particle. Find the velocity and acceleration at

maria [59]

Answer:

v=206ft/s , a=120ft/s

Step-by-step explanation:

We are given the equation of displacement

$S = 6t^3 + 6t^2 + 8t + 3,$

velocity = ds/dt

upon differentiating the given equation

ds/dt = $18t^2 + 12t + 8$

upon substituting t = 3

v = 206ft/s

Acceleration

a= dv/dt

upon differentiating

dv/dt = 36t + 12

put t= 3

a=120ft/s

5 0

3 years ago

Please answer asap!!

jonny [76]

-3x(-7) = -3(-2)(-7) ⇒ -42

-42 would be the answer.

4 0

3 years ago

Read 2 more answers