All categories

3 years ago

To decrease an amount by 7%, what single multiplier would you use?

Mathematics

1 answer:

Fofino [41]3 years ago

7 0

To decrease something at 100% by 7% is:

100% - 7% = 93%

You multiply the original value by 0.93 to decrease it from it's original value by 7%

You might be interested in

What is the mean, median, mode, range 3, 4, 9, 2, 9, 5, 2, 9, 2

Anvisha [2.4K]

Answer:

mean=5

median=4

mode=9,2

range=7

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Can you find the first and third one please!

fenix001 [56]

Answer:

The first ones area is 35 cm squared

The third ones area is 32 cm squared

Step-by-step explanation:

A=1/2H (B1+B2)

35=2.5(8+6)

32=2(7+9)

7 0

3 years ago

1 5/7÷4/9 = what's the answer and how to write the problem out

balu736 [363]

The solution to given expression $1\frac{5}{7} \div \frac{4}{9}$ is $\frac{27}{7}$ or 3.8571

Solution:

Given expression is:

$1\frac{5}{7} \div \frac{4}{9}$

First let us convert the mixed fraction to improper fraction

Multiply the whole number by the denominator.

Add the answer from Step 1 to the numerator.

Write answer from Step 2 over the denominator.

Thus we get,

$1\frac{5}{7} = \frac{1 \times 7 + 5}{7} = \frac{12}{7}$

Now the given expression becomes,

$1\frac{5}{7} \div \frac{4}{9} = \frac{12}{7} \div \frac{4}{9}$

Convert the problem to multiplication by changing the division sign to multiplication and inverting the fraction to the right of the sign

$\frac{12}{7} \div \frac{4}{9} = \frac{12}{7} \times \frac{9}{4}$

Multiply the numerators, multiply the denominators, and leave the product in factored form

$\frac{12}{7} \times \frac{9}{4} = \frac{27}{7}$

In decimal form we get,

$\frac{27}{7} = 3.8571$

Thus the solution to given expression is $\frac{27}{7}$ or 3.8571

4 0

3 years ago

Evaluater 3/7+ 5/8s when r =14s =8.

adell [148]

Answer:

Step-by-step explanation:

Alright, lets get started.

The given expression as :

$\frac{3}{7}r + \frac{5}{8}s$

r is given as 14 and s is given as 8

Plugging the value of r and s in given expression.

$\frac{3}{7}(14) + \frac{5}{8}(8)$

$3*2 + 5$

$6+5$

$11$

Hence the answer is 11 : Answer

Hope it will help :)

3 0

3 years ago

The surface area of a sphere is decreasing at the constant rate of 3π sq. cm/sec . At what rate is the volume of the sphere decr

olga nikolaevna [1]

Whooh

SA=4pir²
take derivitive
dSA/dt=8pir dr/dt

and do the volume as well
V=(4/3)pir³
dV/dt=4pir² dr/dt

we need to solve for dV/dt
to do taht we need dr/dt
so

dSA/dt=8pir dr/dt
given dSA/dt=3pi cm/sec
r=2
3pi=8pi2 dr/dt
3=16 dr/dt
3/16=dr/dt

now do the volume
dV/dt=4pir² dr/dt
r=2
dr/dt=3/16
dV/dt=4pi2² (3/16)
dV/dt=16pi(3/16)
dV/dt=3pi

nice
the volume of the sphere is decreasing at 3pi cm/sec as well

3 0

3 years ago