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2 years ago

There are 14 pieces of chalk and 42 packages of

Mathematics

2 answers:

dem82 [27]2 years ago

7 0

Answer:

qjwjjwmwjwu 4f fsnfh the t4hhrnrhnn4

Phantasy [73]2 years ago

5 0

C.
14

……………………………………

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Solve using system of equations by using elimination method for -5x+4y=2 ; 9x-4y=6

jek_recluse [69]

Answer:

y = 3

x = 2

Step-by-step explanation:

-5x + 4y = 2

9x - 4y = 6

Sum both eq.

-5x + 9x = 4x

+4y - 4y = 0

2 + 6 = 8

then:

4x + 0 = 8

4x = 8

x = 8/4

x = 2

from the first eq.

-5x + 4y = 2

-5*2 + 4y = 2

-10 + 4y = 2

4y = 2 + 10

4y = 12

y = 12/4

y = 3

Check:

from the second eq.

9x - 4y = 6

9*2 - 4*3 = 6

18 - 12 = 6

6 0

2 years ago

Number of Bars

Montano1993 [528]

Answer: Disagree. 1 in 8 bars are cinnamon.

Step-by-step explanation:

There are a total of 8 bars in the pack. Cinnamon is 1 of the 8. Therefore, for every 8 bars, one is cinnamon.

7 0

2 years ago

Which graph is the result of reflecting f(x) = (8)* across the y-axis and then across the x-axis? O 8- 6- 8 7

marta [7]

I assume you meant $f(x)=8^x$ .

Reflecting across the x-axis would give $y=-8^x$ .

Reflecting across the y-axis would give $y=8^{-x}$ .

8 0

2 years ago

What are the answers to the first 3??

FromTheMoon [43]

Answer:

pano ba yan mag isip ka may utak ka tanga

8 0

2 years ago

1) Suppose f(x) = x2 and g(x) = |x|. Then the composites (fog)(x) = |x|2 = x2 and (gof)(x) = |x2| = x2 are both differentiable a

Rufina [12.5K]

Answer:

This contradict of the chain rule.

Step-by-step explanation:

The given functions are

$f(x)=x^2$

$g(x)=|x|$

It is given that,

$(f\circ g)(x)=|x|^2=x^2$

$(g\circ f)(x)=|x^2|=x^2$

According to chin rule,

$(f\circ g)(c)=f(g(c))=f'(g(c)g'(c)$

It means, $(f\circ g)(c)$ is differentiable if f(g(c)) and g(c) is differentiable at x=c.

Here g(x) is not differentiable at x=0 but both compositions are differentiable, which is a contradiction of the chain rule

3 0

3 years ago