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4 years ago

What is 5 to the power of 2 +2 [73-(4x5)]

Mathematics

2 answers:

Setler79 [48]4 years ago

4 0

5^2+2[73-(-4x5)]
25+2[73-(-20)]
25+2[+93]
27+93=120

Ghella [55]4 years ago

4 0

Answer:

$5^2+2[73-(4\times 5)]=131$

Step-by-step explanation:

Given : Expression $5^2+2[73-(4\times 5)]$

To find : What is the solution of the expression ?

Solution :

Expression $5^2+2[73-(4\times 5)]$

Applying BODMAS,

We multiply the term,

$=5^2+2[73-(20)]$

Solve the bracket by subtraction,

$=5^2+2[53]$

Open the bracket and solve quadratic,

$=25+106$

Add the terms,

$=131$

Therefore, $5^2+2[73-(4\times 5)]=131$

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You ride your bike at 9 miles per hour. To find how long it will take you to ride 26 miles, you solve the equation 9 • t = 26. W

Nikolay [14]

Answer:

The amount of time it takes to ride 26 miles is 2.89 hours.

Step-by-step explanation:

Given : You ride your bike at 9 miles per hour.

To find : How long it will take you to ride 26 miles ?

Solution :

The equation given is $9\times t=26$

Using distance formula,

$\text{Distance}=\text{Speed}\times \text{Time}$

According to formula t represent the time taken to cover the distance.

Your speed in miles per hour is 9 miles per hour.

The number of miles you've traveled so far is 26 miles.

Solving the equation,

$9\times t=26$

$t=\frac{26}{9}$

$t=2.89$ hours

The amount of time it takes to ride 26 miles is 2.89 hours.

7 0

3 years ago

Which parent function is represented by the graph?!

timama [110]

Answer: Option A -Absolute value parent function.

Solution:

Absolute value of a number is its distance from on the number line.The graph of absolute function is a V shaped graph.

A quadratic function graph is a U shaped graph.

A graph of linear function is a straight line.

An exponential function graph is rises on one side.

The given graph is a V shaped graph and hence represent Absolute value parent function.

Option B is the right answer.

3 0

4 years ago

It has been estimated that only about 30% of California residents have adequate earthquake supplies. Suppose you randomly survey

mote1985 [20]

Answer:

$P(X\geq 8)=0.0043\\\\$

It's more likely that all of the residents surveyed will have adequate earthquake supplies since it has a probability of 98.02% which is very close to 100%.

Step-by-step explanation:

-This is a binomial probability problem with the function:

$P(X=x)={n\choose x}p^x(1-p)^{n-x}$

-Given p=0.3, n=11, the is calculated as:

$P(X=x)={n\choose x}p^x(1-p)^{n-x}\\\\P(X\geq 8)=P(X=8)+P(X=9)+P(X=10)+P(X=11)\\\\={11\choose 8}0.3^8(0.7)^3+{11\choose 9}0.3^9(0.7)^2+{11\choose 10}0.3^{10}(0.7)^1+{11\choose 11}0.3^{11}(0.7)^0\\\\=0.0037+0.0005+0.00005+0.000002\\\\=0.0043$

Hence, the probability that at least 8 have adequate supplies 0.0043

#The probability that non has adequate supplies is calculated as;

$P(X=x)={n\choose x}p^x(1-p)^{n-x}\\\\P(X= 0)={11\choose 0}0.3^{0}(0.7)^{11}\\\\=0.0198$

#The probability that all have adequate supplies is calculated as:

$P(X=x)={n\choose x}p^x(1-p)^{n-x}\\\\P(X= All)=1-{11\choose 0}0.3^{0}(0.7)^{11}\\\\=1-0.0198\\\\=0.9802$

Hence, it's more likely that all of the residents surveyed will have adequate earthquake supplies since $P(All)>P(None)\ \$ and that this probability is 0.9802 or 98.02% a figure close to 1