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3 years ago

Explain how you used the bar model and exercise to to solve the problem

Mathematics

1 answer:

MariettaO [177]3 years ago

8 0

You need to show us the bar model

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The costs of 2 sound systems were decreased by $10. The original costs of the systems were $90 and $60. Without calculating, whi

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The 60$ system had a greater percentage decrease because it was a lower number to begin with. Taking the same portion out of two different numbers will always be a greater decrease for the lower number.

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2 years ago

State 2 possible solution points for the inequality. Use the form (x,y) for both points. *

Aleksandr [31]

Solution set of inequality-7<3x+2<11, where x is a real number

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3 years ago

Needed help for my math please

vesna_86 [32]

Answer:

see explanation

Step-by-step explanation:

(a)

$\frac{a}{a}$ = 1 ( any value divided by itself = 1 )

(b)

$\frac{a}{1}$ = a ( any value divide by 1 is the value itself )

(c)

$\frac{a}{b}$ × $\frac{c}{d}$ = $\frac{ac}{bd}$

The product of 2 fractions is the product of the numerators divided by the product of the denominators

(d)

$\frac{a}{b}$ ÷ $\frac{c}{d}$ = $\frac{ad}{bc}$

To divide 2 fractions, leave the first fraction, change division to multiplication and turn the second fraction upside down, that is

$\frac{a}{b}$ ÷ $\frac{c}{d}$ = $\frac{a}{b}$ × $\frac{d}{c}$ = $\frac{ad}{bc}$

(e)

$\frac{a}{d}$ + $\frac{b}{d}$ = $\frac{a+b}{d}$

Since the fractions have a like denominator, add the numerators leaving the denominator. This applies to subtraction also

(f)

$\frac{a}{d}$ - $\frac{b}{d}$ = $\frac{a-b}{d}$

See explanation for part (e)

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3 years ago

If a=2, b-3 and c=5. Thr value of 4a-2b+5c are

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(4*2)-(2*-3)+(5*5)= 8-6+25= 27

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3 years ago

13 is 26% of what number

Marina CMI [18]

Answer:

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers