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3 years ago

1/2 - [-1/4+2/3] how do you solve this value of the expression

Mathematics

1 answer:

Shkiper50 [21]3 years ago

3 0

Answer:

1/12

Step-by-step explanation:

1/2-[-1/4+2/3]

1/2-[-3/12+8/12]

1/2-[5/12]

1/2-5/12

6/12-5/12

1/12

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8. Simplify 5mn2 - 8m + mn2.

uranmaximum [27]

Answer:

Step-by-step explanation:

$5mn^2-8m+mn^2\ \\ 6mn^2-8m\\ \\ 2m(3n^2-4)$

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3 years ago

Challenge You buy 3.17 pounds of oranges, 1.25 pounds of pears, and 2.44 pounds of apples.

Nookie1986 [14]

6.86 hope this helps !! :))

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3 years ago

The function y=−16x2+36 represents the height y (in feet) of an apple x seconds after falling from a tree. Find and interpret th

Lapatulllka [165]

Answer:

A. x-intercept=x=1.5 , y-intercept=y=36

B.the apple will hit the ground after x=1.5 seconds.

Step-by-step explanation:

A. X-intercept and Y-intercept:

X-intercept:

the point where the line passes through X-axis i.e. point where y=0

Y-intercept:

the point where the line passes through Y-axis i.e. point where x=0

Given Equation:

$y=-16x^2+36$

Finding X-intercept:

to find x-intercept, put y=0 in the given equation as

$0=-16x^2+36\\$

adding $-16x^2$ to both sides of the equation, we get

$16x^2=36$

dividing both sides by 16, we get

$x^2=\frac{36}{16}\\x^2=2.25$

taking√ on both sides of the equation, we get

$x=\sqrt{2.25}\\ x=1.5$

Finding Y-intercept:

to find y-intercept, put x=0 in the given equation

$y=-16(0)^2+36\\y=36$

thus x-intercept $=x=1.5$

and y-intercept $=y=36$

B.when will the apple hit the ground after x seconds?

In the given equation if x represent the time in seconds then y represents the height of the tree from which the apple is fallen down

so if the apple hits the ground, at this stage the height is zero so y=0, thus we get x as

$0=-16x^2+36\\$

dividing both sides by 16, we get

$x^2=\frac{36}{16}\\x^2=2.25$

taking√ on both sides of the equation, we get

$x=\sqrt{2.25}\\ x=1.5$

the apple will hit the ground after x=1.5 seconds.

8 0

3 years ago

Question 1. What is the probability of choosing a blue block out of a bag containing 4 red , 2 blue , and 4 green blocks ?

sergey [27]

Answer:

Question 1. 2/10

Question 2. 1/4

Question 3. 4/8

Question 4. 3/15

Question 5. 4/10

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4 years ago

I need help question 10

Anarel [89]

The answer would be 2.83 because you'd round the .82 up to .83 because of the 8 in the thousandths place.

4 0

4 years ago