Answer:
The correct answer is 16.7
Step-by-step explanation:
To find the answer, use the Pythagorean Theorem, which states that the square of the two legs equals the square of the hypotenuse.
a^2 + b^2 = c^2
x^2 + 8^2 = 18.5^2
x^2 + 64 = 342.25
x^2 = 278.25
x = 16.7
Dilations stretch or shrink a pre-image. A scale factor greater than 1 will produce an enlargement of the pre-image, and a scale factor less than 1 will produce a reduction of the pre-image. If the scale factor is 1 the pre-image and the image are congruent.
The scale factor between 0 and 1 would result in a dilation that is a reduction.
You'll have to subtract 5 on each side and that'll leave 3 ≥ 3x
Then you'll divide on both sides and flip the inequality: x ≤ 1
5/15 because there are 5 blue marbles and 15 marbles all together.
Tell you what I'm gonna do: I'll show you the work, and then
YOU can take the final steps to the answer.
Alisha needs $228.
She has been saving up for it.
How much more does she need ?
We'll know that, as soon as we figure out how much she has <u>now</u>.
She has saved $4.75 each week for the past 8 weeks.
That means she has put $4.75 into a jar 8 <em>times</em>.
So now, she has 8 <em>times</em> $4.75 .
How much is 8 <em>times </em>$4.75 ?
The difference between $228 and that number
is how much more she needs.
Over to you.
Take it !