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4 years ago

What’s the answer for 7+25•4

Mathematics

2 answers:

elixir [45]4 years ago

7 0

The answer 107 i hope this helps

kotykmax [81]4 years ago

3 0

Use Order of Operations!! Remember PEMDAS!
P: Parentheses first
E: Exponents (ie Powers and Square Roots, etc.)
MD: Multiplication and Division (left-to-right)
AS: Addition and Subtraction (left-to-right)

7+25•4 (multiply 25 by 4 first)
7+100 (then add 7 to 100)
107

So your final answer would be 107

Hope this helped and I hope you have an awesome day!! :D

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Sodium chlorate crystals are easy to grow in the shape of cubes by allowing a solution of water and sodium chlorate to evaporate

vichka [17]

Answer:

V'(4) = 48 mm³/mm

V'(4) means that the rate of change of volume with respect to side when the length of the side is 4 mm

Step-by-step explanation:

Data provided in the question

V is the volume of the cube with x as its sides

Also,

Volume of cube = side³

thus,

V = x³ mm³

Now,

Derivative of volume with respect to side x,

$\frac{\textup{dv}}{\textup{dx}}$ = $\frac{d(\textup{x}^3)}{\textup{dx}}$

$\frac{\textup{dv}}{\textup{dx}}$ = V'(x) = 3x²

now,

at x = 4 mm

V'(4) = 3(4)²

V'(4) = 48 mm³/mm

Here, V'(4) means that the rate of change of volume with respect to side when the length of the side is 4 mm

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3 years ago

Write 21/7 as a whole number

Sunny_sXe [5.5K]

Answer: 3

Step-by-step explanation:

7x=21 21/7=3

7 0

4 years ago

The money used in Saudi Arabia is called the Riyal. The exchange rate is 4 Riyals to $1. Find how many Riyals you would receive

Lorico [155]

20 Riyal

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4 0

3 years ago

Read 2 more answers

52% of all Americans are home owners. If 45 Americans are randomly selected, find the probability that a. Exactly 21 of them are

Nataly [62]

Answer:

0.0918 ; 0.6277 ; 0.6064; 0.5055

Step-by-step explanation:

Given that :

Proportion of home owners : p = 0.52

Number of trials = 45

Using binomial distribution formula :

P(x =x) = nCr * p^x * (1 - p)^(n-x)

A.) probability that exactly 21 are homeowners :

P(x = 21) = 45C21 * 0.52^21 * (1 - 0.52)^(45 - 21)

P(x = 21) = 45C21 * 0.52^21 * 0.48^24

P(x = 21) = 3773655750150 * 0.52^21 * 0.48^24

P(x = 21) = 0.0918

b. At most 24 of them are are home

Using the binomial probability to save computation time.

P(x ≤ 24) = p(0) + p(1) +.... + p(24)

P(x ≤ 24) = 0.6277

C.) At least 23 of them are home owners.

P(x ≥ 23) = p(23) + p(24) +... + p(45)

P(x ≥ 23) = 0.6064

d. Between 20 and 24 (including 20 and 24) of them are home owners.

P(20 ≤ x ≤ 24) = p(20) + p(21) + p(22) + p(23) + p(24)

P(20 ≤ x ≤ 24) = 0.0711 + 0.0918 + 0.1084 + 0.1175 + 0.1167

P(20 ≤ x ≤ 24) = 0.5055

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Answer:

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Step-by-step explanation:

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