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3 years ago

What is the decimal multiplier to decrease by 25%?

Mathematics

2 answers:

Kryger [21]3 years ago

5 0

Answer:

0.75

Step-by-step explanation:

A decrease of 25% becomes 75% of the original number. 75% as a decimal is 0.75.

romanna [79]3 years ago

4 0

Answer:

0.75

Step-by-step explanation:

100(0.75)=75

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Fifteen 2 inch nails weigh 35 grams. How many of these nails weigh 175 grams? Can you explain how to do this please thankyou so

polet [3.4K]

Solving:

1) Pass: Make the rule three (Directly proportional)

Two inch nails ______ grams (<span>Weight)
</span>15 ----------------------------35
n ----------------------------- 175

2) Pass: <span>Multiply cross
</span>
$35*n = 15*175$

3) Pass: Simplify
$35*n = 15*175$
$35n = 2625$
$n = \frac{2625}{35}$
$\boxed{n = 75}$

Answer:
75 nails weigh 175 grams

8 0

3 years ago

If 42% of carmel residents want to have a fireworks celebration, how many total residents live in carmel of only 16,202 people w

tatyana61 [14]

38,576 people live in Carmel.

6 0

3 years ago

Which products result in a difference of squares? Check all that apply. (5z + 3)(–5z – 3) (w – 2.5)(w + 2.5) (8g + 1)(8g + 1) (–

Helen [10]

Answer:

Option 2 $(w-2.5)(w+2.5)=w^2-2.5^2\\$ and option 4 $(-4v-9)(-4v+9)=-(4v+9)(-)(4v-9)=4v^2-9^2$

Explanation:

In option 1 $(5z+3)(-5z-3)=-(5z+3)(5z+3)=-(5z+3)^2$ which is not the difference of squares

In option 2 $(w-2.5)(w+2.5)=w^2-2.5^2\\$ using the formula

$(a+b)(a-b)=a^2-b^2\\Here \\a=w,b=2.5$

Clearly, the difference of squares

In option 3 $(8g+1)(8g+1)=(8g+1)^2$ not the difference of squares

In option 4 $(-4v-9)(-4v+9)=-(4v+9)(-)(4v-9)=4v^2-9^2$

Clearly the difference of squares

In option 5 $(6y+7)(7y-6)=42y^2+13y-42$ not the difference of squares

In option 6 $(p-5)(p-5)=(p-5)^2$ not the difference of squares

4 0

3 years ago

Read 2 more answers

Find the values of x and y!!

riadik2000 [5.3K]

Answer:

1st option

Step-by-step explanation:

7x + 7 and 112 are vertically opposite angles and are congruent , then

7x + 7 = 112 ( subtract 7 from both sides )

7x = 105 ( divide both sides by 7 )

x = 15

4y and 112 are adjacent angles and sum to 180° , that is

4y + 112 = 180 ( subtract 112 from both sides )

4y = 68 ( divide both sides by 4 )

y = 17

3 0

2 years ago

Yesterday, Jack drove 35 1/2 miles used 1 1/4 gallons of gasoline. What is the unit rate for miles per gallon?

insens350 [35]

Answer:

28.4 miles/gallon

Step-by-step explanation:

to find the answer, you need to find the constant by dividing the miles drove by the amount of gasoline (or the other way around in terms of wording if it is not correct grammar) So you need to do 35.5/1.25 . FYI I converted the fraction to decimal. The answer is 28.4 miles/gallon.

Hope this helped!! :)

7 0

2 years ago