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3 years ago

Please assist with this question . Will give brainliest. No links please!!!

Mathematics

1 answer:

SpyIntel [72]3 years ago

8 0

Answer:

$-16x^3+9x^2$

Step-by-step explanation:

$-4x^3-12x^3+9x^2$

$(-4-12)x^3+9x^2$

$-16x^3+9x^2$

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A jar contains 4 brown marbles and 9 yellow marbles.

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Ratio brown to yellow after drawing=3:8

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3 years ago

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Simplify the expression (y2)(y3)

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3 years ago

4 fractions equivalent to 2/3

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Answer:

4/6 6/9 8/12 10/15

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3 years ago

Create an equivalent expression by simplifying the expression below.

BabaBlast [244]

Answer:

see explanation

Step-by-step explanation:

Given

- $\frac{1}{2}$ [ - $\frac{3}{2}$ c + 6c + 1 ] - 3c

Distribute the square bracket by - $\frac{1}{2}$

= $\frac{3}{4}$ c - 3c - $\frac{1}{2}$ - 3c ← combine like terms

= $\frac{3}{4}$ c - 6c - $\frac{1}{2}$

= $\frac{3}{4}$ c - $\frac{24}{4}$ c - $\frac{1}{2}$

= - $\frac{21}{4}$ c - $\frac{1}{2}$

6 0

3 years ago

The heights of apricot trees in an orchard are approximated by a normal distribution model with a mean of 18 feet and a standard

Ulleksa [173]

Answer:

0.9544

Step-by-step explanation:

We are given that mean=18 and standard deviation=1 and we have to find P(16<X<20).

P(16<X<20)=P(z1<Z<z2)

z1=(x1-mean)/standard deviation

z1=(16-18)/1=-2

z2=(x2-mean)/standard deviation

z2=(20-18)/1=2

P(16<X<20)=P(z1<Z<z2)=P(-2<Z<2)

P(16<X<20)=P(-2<Z<0)+P(0<Z<2)

P(16<X<20)=0.4772+0.4772=0.9544

The probability that the height of a tree is between 16 and 20 feet is 95.44%

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3 years ago