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2 years ago

Simplify 3/4 - 1 1/4

Mathematics

2 answers:

lions [1.4K]2 years ago

7 0

I'm pretty sure the answer is 1/2 because 1 1/4 is the same as 1/4 and 3/4-1/4= 1/2

lbvjy [14]2 years ago

4 0

I think the answer is -7/4.

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A farmer has 1,275 seeds. He plants them all in 15 equal rows. A crow comes and eats 5 seeds from each now. How many seeds are l

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Answer:

17 seeds remain

The equation: $\frac{1275}{15} / 5$

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1 year ago

Ms. Shaw wants to go on vacation to Brazil the cost for one ticket is $985 if she goes with a group the ticket price is marked d

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Answer:

$837.25

Step-by-step explanation:

100%-> $985

1%->$9.85

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2 years ago

A rectangular garden of area 75 ftö is bounded on three sides by a wall costing

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2 years ago

the height of a triangle is 4 meters less than the base. if the area of the triangle is 6 m^2 what is the height of the triangle

inna [77]

Answer:

$2m$

Step-by-step explanation:

Alrighty let's do this.

We know that formula for the Area of a triangle is:

$A = \frac{1}{2}bh$

They give us the area as $6m^2$ , so let's include it in the equation.

$6 = \frac{1}{2}bh$

Now we reach a stage where we have 2 unknown variables! That means we can't solve it in its current state. So the idea you should have in cases like these where you have 2 or more unknown variables is, "Can I represent this one variable in terms of another variable?" In this case you can do exactly that. You can represent height in terms of length of the base. We are told the height of the triangle is 4 meters less than the base. That is telling us that $h = b-4$

So replace $h$ in the equation with $b-4$ .

You will now get:

$6 = \frac{1}{2}b(b-4)$

Now we can work towards solving. Let's get simplifying.

$12 = b(b-4)\\12 = b^2 - 4b\\$

bring everything to one side so we can make a quadratic and factor:

$0 = b^2 - 4b - 12\\0 = (b-6)(b+2)\\\\b = 6\\b\neq -2$

We get that $b=6$ .

Since we need the height of the triangle we'll need to call back on what h is. We found earlier that $h = b - 4$ , so to find h, we just sub in our b value into that.

$h = (6) - 4 = 2$

We find that $h=2$

7 0

1 year ago