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Lady bird [3.3K]
3 years ago
13

X^2 • x^7 simplify and solve​

Mathematics
1 answer:
Mama L [17]3 years ago
4 0

Answer:

x^9

Step-by-step explanation:

\huge {x}^{2} . {x}^{7}  =  {x}^{2 + 7}  =  {x}^{9}  \\

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Three years ago, Sherman was twice as old as Clive. If Clive’s present age is c, which expression represents Sherman’s present a
Masteriza [31]
3 years ago Sharman was 2x older, so his age was (c-3)*2
Now his current age is (c-3)*2+3=2c-3
7 0
4 years ago
Read 2 more answers
More trig help pls explain how you do it thank you!!!
kkurt [141]

Answer:

Step-by-step explanation:

sec x( cotx + cos x )= csc x+ 1

1/cos x( cosx/ sinx +cosx) = csc x+ 1

1/cosx ( cosx +  sinxcosx/sinx) = csc x+ 1

1/cosx( cosx) ( 1+sinx/sinx) = csc x+ 1

1(1/sinx+1) = csc x+ 1

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8 0
3 years ago
Mario vende dos autos a 30 000 dólares cada uno. En la venta de uno ganó el 20% y en la
Mariana [72]

Answer:

Mario perdió dinero, perdió 2500 dólares

Step-by-step explanation:

En el primer caso, Mario está vendiendo su carro en 30 000 dólares. En otras palabras, el precio de venta es 30 000. Te dice que en el primer carro ganó 20%, o sea que su precio de venta es una incógnita que llamaremos x y gano 20% de x. Podemos expresarlo de esta manera

x = precio de compra carro 1

x + (20% de x) = 30 000

x = 100 % de x

(100% de x) + (20% de x) = 30 000

120% de x =30 000

120% = 1.2

1.2x = 30 000

x = 25 000

El segundo caso es bastante parecido. Te indica que el precio de venta sigue siendo el mismo, pero el precio de compra es diferente. El precio de venta sigue siendo 30 000, pero el precio de compra del segundo carro esta vez será "y". En este caso, pierde 20% del precio de compra, o osea, pierde 20% de y. Se puede expresar de la siguiente manera:

y = precio de compra carro 2

y - (20% de y) = 30 000

y = 100% de y

(100% de y) - (20% de y) = 30 000

80% de y = 30 000

80% = 0.8

0.8y = 30 000

y= 37 500

Entonces tenemos que el precio de compra del carro uno es 25 000 dólares y el precio de compra del carro dos es de 37 500. Si sumamos ambas cantidades, tenemos que ambos carros costaron 62 500 dólares. Como vendió esos dos autos a 30 000 dólares cada uno, recibió 60 000 dólares. El precio por el que vendió los autos (60 000) es menor al precio del que los compro (62 500), por lo que eso representa una perdida.

Para hallar la cantidad que ganó o perdió (en este caso perdió) debes restar el precio de venta menos el precio de compra.

60 000 - 62 500 = -2 500

Como es un número negativo, representa una perdida.

6 0
3 years ago
By rounding to 1 significant figure, estimate<br><br>288.7 x 7.8
ludmilkaskok [199]

Answer:

2251.86

Step-by-step explanation:

Use the algorithum method.  288. 7 ×7.8= 230.96+ 2020.90= 2251.86 sorry i'm trying explain but its my first time using brainly hope that helps

                                                 

                               

3 0
3 years ago
Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2 and the profit
AleksandrR [38]
2x + 3y = 1470
3y = -2x + 1470
y = -2/3x + 490 <== slope intercept form
=================
y = -2/3x + 490
slope = -2/3
y int = (0,490)
=================
description of graphing : Plot ur point at (0,490). Since the slope is -2/3, starting at (0,490)...go down 2 and to the right 3,then down 2 and to the right 3 and you will eventually cross the x axis at the x intercept.

The x intercept can be found by subbing in 0 for y and solving for x
y = -2/3x + 490
0 = -2/3x + 490
2/3x = 490
x = 490 * 3/2
x = 1470/2 = 735...so ur x intercept is (735,0)

therefore, your line will cross the x axis at (735,0)
========================
function notation is : f(x) = -2/3x + 490
========================
suppose his profit is 1593....
2x + 3y = 1593
3y = -2x + 1593
y = -2/3x + 531

the graphs for the two months :
similarities : they both have the same slope of -2/3
differences : they have different x and y intercepts
By the way, these are parallel lines
===================
sorry about the last one....can't see the 3rd month graph


7 0
3 years ago
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