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almond37 [142]
3 years ago
13

Decrease 640 by 24 percent​

Mathematics
2 answers:
Mkey [24]3 years ago
7 0

Answer:

486.4

Step-by-step explanation:

640 - (24% × 640) =

(1 - 24%) × 640 =

(100% - 24%) × 640 =

76% × 640 =

76 ÷ 100 × 640 =

76 × 640 ÷ 100 =

48,640 ÷ 100 =

486.4

Murrr4er [49]3 years ago
5 0

Answer:

486.4

Step-by-step explanation:

Multiply 640 by the percent and then subtract the percent from the whole since the question is asking for a decrease by 24 percent, not what 24 percent of 640 is.

640 × 0.24 = 153.6

640 - 153.6 = 486.4

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HELP I DONT KNOW THE ANSWER
il63 [147K]

9514 1404 393

Answer:

  3/4; 1/4, 1/4, 1/4

Step-by-step explanation:

The intent here is to let you demonstrate your understanding that multiplication by an integer is the same as repeated addition.

Your knowledge of fractions tells you ...

  \dfrac{1}{4}\times3=\dfrac{3}{4}

The factor of 3 means this is equivalent to adding 1/4 a total of 3 times:

  \dfrac{1}{4}\times3=\dfrac{1}{4}+\dfrac{1}{4}+\dfrac{1}{4}

6 0
2 years ago
a Can of soup has a diameter of 2.5 inches and a height of 4 inches. how much metal is needed to make the can? round your answe
Ratling [72]

First the 2 bases have surface area pi*1.25^2*2

Then the side

2.5pi*4=10pi

total of 9.817+31.415

=41.232

This approximation could be further round down for this problem to 41.2

Which makes choice C the correct choice.

7 0
3 years ago
Consider the derivation of the quadratic formula below. What is the missing radicand in Step 6?
notka56 [123]
The correct answer is d
3 0
3 years ago
What are the next three terms of the following sequence?
kaheart [24]

we know that given terms were i geometric progression.

which means common ratio is same between two consecutive terms .

here we have 8,40,200,1000.

we know that common ratio =second term/first term =40/8=5.

so each and every terms is multiplied by 5 to get next term for this series the term after 1000 is 5000 =1000*5.

in part b we have another series which is having common ratio of -2.

so we need to multiply with -2 to find next term.

80*(-2)=-160.

for part c the common ratio is -2 .

so we need to multiply with -2 *previous term =-2*16 =-32.

5 0
3 years ago
Read 2 more answers
At a pizza eating competition, Davonne ate four more than twice as many slices as the runner up. If Davonne ate 11 slices, then
Sauron [17]
Let's begin with x as the number of slices the runner up ate.
Davonne ate four more than twice
So the equation should look somewhat like this.
4+2x=11
2x=7
x=3.5
So the runner up ate 3.5 slices
<span>Davonne ate four more than twice as many slices as the runner up. If Davonne ate 11 slices, then how many slices did the runner up eat?</span>
3 0
3 years ago
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