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3 years ago

86,921 in expanded form

Mathematics

2 answers:

Rudik [331]3 years ago

3 0

86921 = 80000 + 6000 + 900 +20 +1

Irina18 [472]3 years ago

3 0

Eight thousand nine hundred twenty-one

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A chemist is using

olga_2 [115]

0.191= 19.1%

338mL × 0.191= 64.558mL acid

We round to the nearest tenth, getting a total of 64.6mL acid.

4 0

3 years ago

Read 2 more answers

Solve for x.

Butoxors [25]

Answer:

I think its A

Step-by-step explanation:

-7 times -4 is equal to 21 plus one 22

-10 times -4 is equal to 40 plus 41: 81

So this means that -4 is the answer but it can be any number less than -4 as well

5 0

4 years ago

HELP ME FAST PLEASE, PLEASE

4vir4ik [10]

Vcone=(1/3)hpir^2
base=diameter=2rdaius=6
diameter/2=3=radius
height=9.2

Vcone=(1/3)(9.2)pi(3^2)
Vcone=9.2pi3
vcone=27.6pi cm^3
aprox pi=3.141592
vcone=86.707 cm^3

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6 0

3 years ago

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Use the power-reducing formulas to rewrite the expression as an equivalent expression that does not contain powers of trigonome

scoundrel [369]

Answer:

$6-8cos2x+2cos4x$

Step-by-step explanation:

We are given that

$16sin^4 x$

We can write the given expression as

$16(sin^2x \times sin^2 x)$

$16(\frac{1-cos2x}{2})(\frac{1-cos2x}{2})$

By using the formula

$sin^2\theta=\frac{1-cos2\theta}{2}$

$4(1-cos2x)^2$

$4(1-2cos2x+cos^2(2x)$

Using the identity

$(a-b)^2=a^2+b^2-2ab$

$4(1-2cos2x+\frac{1+cos4x}{2})$

$4-8cos2x+2+2cos4x$

$6-8cos2x+2cos4x$

This is required expression.

6 0

4 years ago

One gym has offers. Write out an equation to join and set it equal to your budget. Budget = 275, membership fees = 25 per month,

matrenka [14]

Answer:

8 months

Step-by-step explanation:

Given that,

Total budget = 275

Membership fee = 25 per month

Flat discount = 75

We need to find for how many months of gym membership I can afford. The equation will look like :

25x=275-75

25x=200

x = 8 months

Hence, he can afford gym membership for 8 months.

6 0

3 years ago