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Dimas [21]
3 years ago
14

Simplify the rational expression below.

Mathematics
1 answer:
LenKa [72]3 years ago
3 0

Answer:

A) (x-7)/(x+4)

Step-by-step explanation:

(x^2-10x+21)/(x^2+x-12)=[(x-3)(x-7)]/[(x+4)(x-3)]=(x-7)/(x+4)

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What is (6x-4)+(5z+8)
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Combine like terms.

6x + 5z + 4

6 0
3 years ago
-3х + = 1000 = 2x + 800
MatroZZZ [7]

Answer: here u go

1000 2x+y

Step-by-step explanation:

5 0
3 years ago
Can someone please help me
zhuklara [117]
So what is the question?
7 0
2 years ago
A farmer grows crops with an average height of 5 feet. He breeds his tallest plants, which are each 8 feet tall. They produce of
irinina [24]

Answer:

Qa: The heritability for tallness in these crops is 0.08, while Qb: Genes slightly influence the trait for height.

Step-by-step explanation:

Qa: The average height of regular crops grown by the farmer was 5 feet. The amazingly tall breeds have a 3feet increment than the usual crops. This progeny of the farmer's choice breeds has a 0.25 feet increment in height than what is expected in other normal breeds. Therefore, the heritability of the tall trait by these progeny was 0.25/3, which is 0.08333.....Approximately 0.08.

Qb: This low heritability index showed that the trait for tallness is slightly influenced by gene, because if otherwise, the index would have been a far way higher than this. However, we cannot conclude that it is the environment that determines the tall phenotype to be expected in the crops; this renders other options wrong.

7 0
3 years ago
A new hard drive costs $225, plus $40 per hour for
allsm [11]

Answer:

4 hours

Step-by-step explanation:

y= 40x +225

$385 money to spend - $225 that go for hard drive = $160

40* x can be maximum 160  so x= 160 /40= 4

5 0
2 years ago
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