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3 years ago

I NEED HELP ON THIS A.S.A.P !!!!!!!! will give brainleist!!!

Mathematics

2 answers:

Phantasy [73]3 years ago

8 0

Take 10% of 30.

Take another 10% of 30 but divide it by 2. You will get $3 plus $1.50 which equals $4.50

blsea [12.9K]3 years ago

6 0

Answer:

Step-by-step explanation:

30.20 * 15% (or 0.15) = 4.53

4.53 is about 4.50

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If a lawnmower was regularly $150 and is on sale for $120. By what percentage was the price decreased?/

topjm [15]

The percent decrease is 20%.
150 - 120 = 30
30 divided by 150 = 0.2
0.2 as a percent is 20
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4 0

3 years ago

I need help with this

Sidana [21]

The answer is the first one

6 0

3 years ago

Read 2 more answers

1. A magazine advertise its $12 annual subscription price 70% off the newsstand price. What is the number of dollars per year a

ollegr [7]

1. $17.14

12 represents 70%
x represents 100%

rule of three

Price Percentage
+12 70-
-x 100+

$x= \frac{12*100}{70} 
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x= \frac{12*10}{7} 
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3 0

3 years ago

By what factor is the volume of a right square pyramid multiplied if its height is multiplied by 8 but the dimensions of its bas

xeze [42]

We have that
the volume of a right square pyramid ---------- > (1/3)b²h

Let
V1------------ > initial volume
V1=(1/3)b²h

<span>if its height is multiplied by 8
</span>
V2=(1/3)b²(8h)-------------- > V2=V1*8

therefore

the answer is the option D

the factor is is 8

5 0

3 years ago

The function f(x) = –4x2 represents the path of a whale as it surfaces for air and dives again. Select all the observations that

olga nikolaevna [1]

Answer:

Option (A) and (E)

Step-by-step explanation:

Characteristics of the quadratic function representing the path of a whale as it surfaces for air is,

y = -4x²

1). Since domain of the given function will be all real number x until ocean hits the shore on both the sides of the path.

2). Range of the function will be the value of y from the bottom of the ocean to the surface.

3). Whale will touch the surface of the ocean at one point only.

4). Function 'f' will increase initially upto the surface of the ocean and then it will decrease.

5). Point where the hale touches the surface will be maximum.

Therefore, Options (A) and (E) will be the correct options.

7 0

3 years ago