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svetoff [14.1K]
3 years ago
5

Anyone can help me with 9th grade math !!!

Mathematics
1 answer:
Arte-miy333 [17]3 years ago
5 0
Okay so where's the math question(s)?
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What is 150% of 20? ​
Galina-37 [17]

Answer:

30

Step-by-step explanation:

8 0
3 years ago
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what is the polynomial function of lowest degree with leading coefficient of 1 and roots 2 and 1 + square root2
Marta_Voda [28]
If the roots to such a polynomial are 2 and 1+\sqrt2, then we can write it as

(x-2)(x-(1+\sqrt2))

courtesy of the fundamental theorem of algebra. Now expanding yields

(x-2)(x-1-\sqrt2)=x^2-2x-(1+\sqrt2)x+2(1+\sqrt2)=x^2-(3+\sqrt2)x+2+2\sqrt2

which would be the correct answer, but clearly this option is not listed. Which is silly, because none of the offered solutions are *the* polynomial of lowest degree and leading coefficient 1.

So this makes me think you're expected to increase the multiplicity of one of the given roots, or you're expected to pull another root out of thin air. Judging by the choices, I think it's the latter, and that you're somehow supposed to know to use 1-\sqrt2 as a root. In this case, that would make our polynomial

(x-2)(x-(1+\sqrt2))(x-(1-\sqrt2))=x^3-4x^2+3x+2

so that the answer is (probably) the third choice.

Whoever originally wrote this question should reevaluate their word choice...
5 0
3 years ago
A grocery store sells a bag of 4 oranges for $2.84. If Arianna spent $3.55 on oranges,
zhannawk [14.2K]
$4/3=$1.33 per pound.
$9/8 = $1.13 per pound.
The second one is cheaper.
3 0
3 years ago
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Hollis goes outside at 2:00. He spends 48 minutes riding his bike and playing with his dog. What time is it now? Write the time
ss7ja [257]

Answer:

2:48

Step-by-step explanation:

48 minutes passed and he went outside at 2:00 im not sure what they mean by write it in 2 ways though

8 0
3 years ago
Properties of Transformation.
kumpel [21]

Answer:

distance (lengths of segments remain the same)

angle measures (remain the same)

parallelism (parallel lines remain parallel)

collinearity (points remain on the same lines)

orientation (lettering order remains the same)

Step-by-step explanation:

8 0
3 years ago
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