All categories

3 years ago

If 14 is 35% of a value, what is that value? A. 21 B. 86 C. 65 D. 40

Mathematics

1 answer:

alekssr [168]3 years ago

5 0

Answer:

Step-by-step explanation:

I just solve each of them by multiplying them by .35 until I get to the one that is correct. 40*.35=14

Or you can do a proportion which would be-

14 35

----- = -----

x 100

To solve this, you do 14*100=1400. 1400/35=40.

Hope this helps!

You might be interested in

Do we go back 2 ppaces or go forward 2 places when making percenta into decimals

xxMikexx [17]

Move the decimal to the left 2 spaces. 90% would .90. 74% would be .74. 134% would be 1.34 Got it? It' always the same no matter the percent. 2 spaces to the left.

7 0

3 years ago

Which of the following expressions is equivalent to a3 + b3?

lubasha [3.4K]

ANSWER
${a}^{3} + {b}^{3} = (a + b)( {a}^{2 } - ab + {b}^{2} )$

EXPLANATION

To find the expression that is equivalent to
${a}^{3} + {b}^{3}$
we must first expand
${(a + b)}^{3}$
Then we rearrange to find the required expression.

So let's get started.

${(a + b)}^{3} = (a + b) {(a + b)}^{2}$

We expand the parenthesis on the right hand side to get,

${(a + b)}^{3} = (a + b) ( {a}^{2} + 2ab + {b}^{2} )$

We expand again to obtain,

${(a + b)}^{3} = {a}^{3} + 3 {a}^{2}b + 3a {b}^{2} + {b}^{3}$

Let us group the cubed terms on the right hand side to get,

${(a + b)}^{3} = {a}^{3} + {b}^{3} + 3 {a}^{2}b + 3a {b}^{2}$

${(a + b)}^{3} = {a}^{3} + {b}^{3} + 3ab (a+ b)$

We make the cubed terms the subject,

${(a + b)}^{3} - 3ab (a+ b) = {a}^{3} + {b}^{3}$

We factor to get,

$(a + b)({(a + b)}^{2} - 3ab ) = {a}^{3} + {b}^{3}$

We expand the bracket on the left hand side to get,

$(a + b)( {a}^{2} + 2ab + {b}^{2} - 3ab ) = {a}^{3} + {b}^{3}$

We finally simplify to get,

$(a + b)( {a}^{2} - ab + {b}^{2} ) = {a}^{3} + {b}^{3}$

5 0

2 years ago

Read 2 more answers

PLEASE EXPLAIN !!!!!!!!!!!! Sophia has $2.25. she wants to give an equal amount. to each of her 3 young cousins. How much will e

stepladder [879]

Each cousin will get 0.75 cents because you would have to divide $2.25 by 3. I hope this helps.

5 0

3 years ago

Read 2 more answers

Graph (-4, 5), (2, 3), (-3.0), (-4. -5). (-5. 2), and (-5,3) and connect the points to form a polygon. How many sides does the p

kykrilka [37]

Answer:

I think the sides of polygon are 6

Step-by-step explanation:

Because to form a polygon we need to the first to form a horizontal and vertical line,to find the number in that line,and join the line based on the numbers given, then you will get a polygon with 6 side

7 0

2 years ago

Roland has an appointment tomorrow at 8:45

Marina86 [1]

Two hours earlier than the appointment start time, so he should get up at 6:45am, at latest.

7 0

2 years ago