I NEED AN EXPERT ON SURFACE AREAS..Ill give extra points and brainless

Mathematics

2 answers:

natta225 [31]3 years ago

7 0

Answer:

60 is the area

Step-by-step explanation:

you just mult 12x5

notsponge [240]3 years ago

4 0

Answer:

105

Step-by-step explanation

15 x 12 = 180

180 divided by 2 = 90

90 + 15 = 105

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What two pairs do i use to find the slope

fgiga [73]

You can try to use the points: (3, 3) and (-3, -1)

if you plug the values listed above using the slope formula : y2 - y1/x2 - x1

you should get the answer: - 4/6 which is simplified to 2/3

hope this helps :)

8 0

3 years ago

For this item, any answers that are not whole numbers should be entered as decimals, rounded to the hundredth.

IrinaK [193]

we'll proceed along the same lines as the previous one.

the cost of the boots is 90.10 and that includes 6.25% sales tax, so if "x" is the 100%, then 90.10 is really the 106.25%, because is including the extra 6.25%.

$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 90.10&106.25\\ x&100 \end{array}\implies \cfrac{90.10}{x}=\cfrac{106.25}{100} \\\\\\ 9010=106.25x\implies \cfrac{9010}{106.25}=x\implies 88.8=x$

so if that's the cost of each boot, without tax, then the markup will be 88.8 - 50.88 = 37.92.

if the 100% is 88.8, how much is 37.92 off of it in percentage?

$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 88.8&100\\ 37.92&x \end{array}\implies \cfrac{88.8}{37.92}=\cfrac{100}{x} \\\\\\ 88.8x=3792\implies x=\cfrac{3792}{88.8}\implies \stackrel{\%}{42.7}\approx x$