To decrease an amount by 60% what single multiplier would you use?

Answers

Answer 1

Answer: Let's imagine that the question is about fractions. You want to decrease an about by 0.6 . Rather than 100 (which is for percentages), 1 is used instead. 1 - 0.6 = 0.4

To decrease an amount by 60%, the single multiplier you would use is 0.4

There is an easy way to check:
100 X 60% = 60
100 - 60 = 40

100 X 0.4 = 40

The fact that we got the same result using both the percentage and the multiplier moves that the latter is correct.

Answer 2

Answer: to reduce by 60% multiply by 0.6

60% = 600/100 = 6/10 = 0.6

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The area of the base of a prism is 60mm. The perimeter of the base is 40mm. The height of the prism is 8mm. What is the surface area of the prism?A. 168mm
B. 380mm
C. 440mm
D. 560mm

Answers

B) 380mm

Surface area = Perimeter of the base x height + the area of the base
Surface area = 40 x 8 + 60
Surface area = 320 + 60
Surface area = 380 mm

Answer ASAP!A large amount of peanuts was divided equally into 6 small bags. The total number of peanuts, p, was 342. Which statements can be used to write an expression and then find the number of peanuts that ended up in each bag? Check all that apply.
The operation is division.
The operation is multiplication.
The variable is the number of bags.
342 divided by 6 equals 57.
Write the division expression as a fraction, StartFraction p Over 6 EndFraction.
To evaluate, substitute 342 for the variable.
Each bag will have 57 peanuts.
The constant is 342.

Answers

Answer: A, D, E, F, G

Step-by-step explanation:

If the letters didn't make sense, the answers are:

A: The operation is a division

D: 342 divided by 6 equals 57.

E: Write the division expression as a fraction, p/6

F: To evaluate substitute 342 for the variable.

G: Each bag will have 57 penuts.

The question is just asking for a basic understanding of word problems and which part is called what.

PLEASE HELP!!!!!!!!!Let x^2+bx+c = 0 be a quadratic whose roots are each two more than the roots of 3x^2-5x-7. What is c?

Answers

Let $x_1 , x_2$ be the roots of the equation $3x^2-5x-7$ . By the Viet theorem you have that $\left \{ {{x_1+x_2=- (5)/(3) } \atop {x_1x_2= (-7)/(3) }} \right.$ .

For the equation $x^2+bx+c = 0$ you'll have that $c=(x_1+2)(x_2+2)=x_1x_2+2(x_1+x_2)+4=(-7)/(3)+2\cdot(- (5)/(3) )+4$
That is $(-7)/(3)- (10)/(3) +4=- (5)/(3)$ .

Answer: $- (5)/(3)$

If Carl takes a pizza with 8 slices and has three friends eat a slice, what fraction of the pizza is left?

Answers

ok so the wording is confusing

is it
A. 3 friends took 1 slice each (total is 3 slice) or
B. 3 friends took 1 slice total

if A, go to AAAAAA
if B. to to BBBBB

AAAAAAAAAA
3 slices taken
fraction is parts out of whole
what is left
left=original-taken
taken=3
original=8
8-3=5
5=left
fraction is 5/total=5/8

BBBBBB
taken=1
fraction is parts out of whole
what is left
left=original-taken
taken=1
original=8
8-1=7
7=left
fraction is 7/total=7/8

if 3 slices taken total then 5/8 left
if 1 slice taken totl then 7/8 left

Just do 8-3=5 so, 5/8would be your awnsere

Solve w + 1⁄4 < 7⁄8.

Answers

Answer:

w <0.125

Step-by-step explanation:

Answer:

w < 5/8

Step-by-step explanation:

Aim to isolate w. Subtract 1/4 from both sides, obtaining:

w < 7/8 - 2/8 (since the LCD here is 8)

Then:

w < 5/8

What is the value of x? º A triangle with base on an extended line. Two angle measures are given. Top interior angle is twenty-eight degrees. Lower left exterior angle is seventy-one degrees. Lower right interior angle is labeled x degrees.

Answers

All interior angles of a triangle must have a sum of 180°.
Interior angle of a triangle and its corresponding exterior angle must have a sum of 180° when its line is extended.

Top interior angle is 28°
Lower left exterior angle is 71°
Lower right interior angle is x°

Get the left interior angle.
Exterior angle + Interior angle = 180°
71° + Interior angle = 180°
Interior Angle = 180° - 71°
Interior Angle = 109°

Top Interior angle + Left Interior Angle + Right Interior angle = 180°
28° + 109° + x° = 180°
x = 180° - 28° - 109°
x = 180° - 137°
x = 43°

The lower right interior angle is 43°

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