3 years ago

How do you do a question like this? 80% as a fraction in simplest form.

Mathematics

1 answer:

Gemiola [76]3 years ago

3 0

Take away 0.20 of the amount.

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What solution is this w = 10

alina1380 [7]

Answer:

w = 10

Step-by-step explanation:

9(w - 9) -2 = -7 + 7(w -8)

Expand:

9w - 81 - 2 = -7 + 7w - 56

Rearrange:

9w - 7w = -7 - 56 + 81 + 2

2w = 20

w = 10

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4 years ago

12) What is 6.79 x 10 to the 5th power written in standard form

Elena L [17]

Answer:A

67,900,000

Step-by-step explanation:

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3 years ago

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A boy owns 3 pairs of pants, 6 shirts, 4 ties, and 3 jackets. how many different outfits can the boy wear to school if each outf

scZoUnD [109]

multiply all numbers together:

3*6*4*3 = 216 combinations

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3 years ago

Given h(x)=3x+4, solve for x when h(x)=1

aivan3 [116]

Answer:

Step-by-step explanation:

Given,

h ( x ) = 1

To find : -

h ( x ) = 3x + 4

h ( 1 ) = 3 ( 1 ) + 4

= 3 + 4

h ( 1 ) = 7

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3 years ago

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Y=x+1 y=x^2-1 please help i don't understand

ololo11 [35]

ANSWER

The solution is

$(x=1,y=2),(x=2,y=3)$

EXPLANATION

We have

$y=x+1---(1)$

and

$y=x^2-1---(2)$

Let us substitute equation (1) in to equation (2). This gives us,

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

We rewrite this as a quadratic equation as the highest degree is 2.

$x^2-x-1-1=0$

This implies that

$x^2-x-2=0$

we factor to obtain,

$x^2+x-2x-2=0$

$x(x-1)-2(x-1)=0$

$(x-1)(x-2)=0$

This means,

$(x-1)=0\:\: or\:\:(x-2)=0$

$x=1\:\: or\:\:x=2$

We substitute this values into any of the above equations, preferably equation (1)

When, $x=1$ , $y=1+1=2$

When, $x=2$ , $y=2+1=3$

The solution is

$(1,2),(2,3)$

8 0

4 years ago