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3 years ago

To get rid of a negative exponent, move the part with the negative exponent to the other side of the_________(blank)

Mathematics

1 answer:

IRINA_888 [86]3 years ago

5 0

Answer:

fraction

Step-by-step explanation:

If you have a negative exponent, such as $x^{-2}$ , that can also be written as $\frac{x^{-2} }{1}$

by moving the exponent (and it's base) to the denominator (the other side of the fraction, since it's in the numerator), you make the exponent positive: $\frac{1}{x^{2} }$

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This is due in 10 minutes please help me

valkas [14]

Given:

The rate of interest on three accounts are 7%, 8%, 9%.

She has twice as much money invested at 8% as she does in 7%.

She has three times as much at 9% as she has at 7%.

Total interest for the year is $150.

To find:

Amount invested on each rate.

Solution:

Suppose x be the amount invested at 7%. Then,

The amount invested at 8% = 2x

The amount invested at 9% = 3x

Total interest for the year is $150.

$x\times \dfrac{7}{100}+2x\times \dfrac{8}{100}+3x\times \dfrac{9}{100}=150$

Multiplying both sides by 100, we get

$7x+16x+27x=15000$

$50x=15000$

Dividing both sides by 50, we get

$x=\dfrac{15000}{50}$

$x=300$

So, the amount invested at 7% is $300$ .

The amount invested at 8% is

$2(300)=600$

The amount invested at 9% is

$3(300)=900$

Hence, the stockbroker invested $300 at 7%, $600 at 8%, and $900 at 9%.

7 0

2 years ago

Write 1 and 1/5 and 1 and 1/3 using a common denominator :)

RUDIKE [14]

Answer:

1 3/15

1 5/15

Step-by-step explanation:

6 0

2 years ago

A cubic meter of water has a mass of 10 kilograms. How much water is this in grams?

Cloud [144]

Each liter of water weighs 1 kg, so the weight of the water in a cubic meter is 1,000 kg.

6 0

2 years ago

Find the coordinates of the midpoint of a segment with the given endpoints. *

serg [7]

Step-by-step explanation:

Given points are (-2,5) and (3,-17)

to find midpoint, use this formula

( x1+x2/2 , y1+y2/2)

where points are a(x1,y1) and b(x2,y2)

coming to the question,

midpoint is :

[ (-2-3)/2 , (5-17)/2 ]

[ -5/2 , -12/2 ]

[ -2.5 , -6 ]

OPTION $A$ IS CORRECT

8 0

2 years ago

Read 2 more answers

How do i solve 7x^{2} +11y^{2} =40

svetoff [14.1K]

Answer:

Step-by-step explanation:

There is no solution as you have two variables and only one equation. The best you can do is solve for one variable as a function of the other.

$7x^2+11y^2=40\\ \\ 11y^2=40-7x^2\\ \\ y^2=\frac{40-7x^2}{11}\\ \\ y=\sqrt{\frac{40-7x^2}{11}}$

6 0

2 years ago