Jack was planting a tree. He was to dig a hole that was 3 feet deep for every 5 feet of tree height. How deep should he dig the hole for a tree that is 17feet high.
Calculations Cross multiplication
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5x = 2 x 13
Divide by 5 to isolate x
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x = 10.2
Answer = 10.2
12.5%
<span>to convert from percent to decimal: divide by 100, and remove the "%" sign.
</span>
12.5 ÷ 100 = 0.125
1➡Problem ▶4x - y = 6
Steps▶4(x)-y- 6=?
y-intercept▶6÷-1 = -6, right ?
x-intercept ▶ 6÷4 which is also equal. to▶ 3÷2 , they both equal 1.5 , right?
The answer⬇
Your slope▶4
y-intercept ▶ -6
x-intercept ▶1.5
2➡Problem 3x + 2y = 8
Steps▶3(x)+2(y)-8=?
y-intercept▶ 8 ÷ 2 = 4, right?
x-intercept 8 ÷ 3 = 2.67 ,right?
Slope▶-3.0÷2.0 = -1.50
Your answer⬇
y-intercept ▶4
x-intercept ▶2.67
Slope ▶1.50
3 ➡Problem y - 1/2x = 3/4
Steps ▶ 3÷4 = .75
1÷2 = .5
y-intercept ▶ 3÷4 = .75,right?
x-intercept ▶3 ÷ (-2) = -1.50; 1.5 , right ?
Slope ▶ 1 ÷ 2 = .5, right ?
your answer⬇
y-intercept : .75
x-intercept: 1.5
Slope .5
To visualize better, look at it like this:
First, see if you can simplify 3/2. You can't, so leave it like that.
The rule for exponents is you subtract the exponent from the bottom (r) from the exponent on the top ()
Put that on the top, and you get