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miss Akunina [59]
3 years ago
8

Plz answer this. Plzzzzzzzzzzzzzzzzz

Mathematics
1 answer:
lana [24]3 years ago
5 0

Answer:

2^3×6-5÷3-3×4^-4 solving 8×1÷0×0=8÷0= 8

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What's the largest perfect square that goes into 72?
Zolol [24]

Answer:

64

Step-by-step explanation:

8² = 64

9² = 81 ( doesn't fit into 72)

7 0
3 years ago
If A = 3x2 + 3x - 6 and B = -2x2 - 6x + 7, thenA - B equals1) -5r- 11x + 132) 5r2 + 11x – 133) -5x2-x+14) 5x2 -*+1
Grace [21]
3x^2-(-2x^2)+5x-(-6x)-6-(7)=5x^2+11x\text{ - 13}

Therefore, the correct answer is:

2)5x^2+11x\text{ - 13}

5 0
1 year ago
To ensure that she obtained a sufficiently large number of minority respondents in a study on racial attitudes, a researcher div
soldi70 [24.7K]

Answer:

It is stratified random sampling.

Step-by-step explanation:

Stratified random sampling is a method of sampling that involves the division of a population into smaller sub-groups known as <em>strata.</em>

The strata are formed based on members' shared attributes or characteristics, in this case their race.

Stratified random sampling is also called <em>proportional random sampling</em> or <em>quota random sampling</em>

4 0
3 years ago
Solve the problem be using proper methods. Show work.
Novosadov [1.4K]

Answer:

$1280.59

53 years

Step-by-step explanation:

To find how much we will get in 5 years, we use the formula:

A=Pe^{rt}

P = $1200

r = 1.3% or 0.013

t = 5

Now that we have our values, let's plug them into the formula.

A=1200e^{0.013(5)}

A=1200e^{0.065}

A=1280.59

We will have $1280.59 after 5 years.

Now to find how long it will take for our investment to double.

t = ln(A/P)/r

A = 2400

P = 1200

r = 1.3 or 0.013

Let's plug it in.

t = ln(2400/1200)/0.013

t = ln(2)/0.013

t = 53.32 or 53 years

5 0
3 years ago
The path of a projectile launched from a 16-ft-tall tower is modeled by the equation y = −16t2 + 64t +16. What is the maximum he
Aleks04 [339]

Answer:

<h3>80 feet</h3>

Step-by-step explanation:

Given the path of a projectile launched from a 16-ft-tall tower modeled by the equation y = −16t^2 + 64t +16

h is the maximum height reached

t is in seconds

The velocity of the projectile at its maximum height is zero;

velocity v = dy/dt

v = -32t + 64

Since v = 0 at maximum height

0 = -32t + 64

32t = 64

t = 2secs

Substitute t = 2secs into the equation of the height to get the maximum height.

y = −16t^2 + 64t +16

at t = 2secs

y = −16(2)^2 + 64(2) +16

y = -64 + 128 + 16

y = 64+16

y = 80 feet

Hence the maximum height, in feet, reached by the projectile is 80 feet

5 0
3 years ago
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