To find the value of a mathematical expression using the order of operations is to?

Answers

Answer 1

Answer:

Answer:

evaluate

Step-by-step explanation:

Answer 2

Answer: I think your looking for PEMDAS. Typical you would find the value of the ,ath expression using PEMDAS. PEMDAS stands for Parentheses Exponents Multiplication Division Addition Subtraction. When using PEMDAS (order of operation) you have to use each letter in order, So look for parentheses and if their aren't any look for the exponents which would look like $x^(2)$ then you would do all multiplication and division then addition and subtractions

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How many milliliters of a 15% saline solution and how many milliliters of a 40% saline solution must be mixed to produce 10 milliliters of a 30% saline solution?Volume of 15% solution= ____
Volume of 40% solution = ____

Answers

x - volume of 15% saline solution. Theres is 15% x = 0,15 x saline solution
y - volume of 40% saline solution. There is 40% y = 0,4y saline solution

You want to produce 10 mililiers so x+y= 10

And this saline has to be 30%, so you've got 30 % * 10 = 0,3 * 10 = 3 ml saline. So:
0,15x + 0,4y = 3
And you've got system of equations:
$\begin{cases} x+y=10 \n 0,15x+0,4y=3\end{cases} \n \begin{cases} x=10-y \n 0,15x+0,4y=3\end{cases} \n \hbox{Substitute value from first equation to second:} \n 0,15(10-y)+0,4y=3 \n 1,5-0,15y+0,4y=3 \n 0,25y=1,5 \qquad /:0,25 \n y=(1,5)/(0,25)=(150)/(25)=6 \n \hbox{Then:} \n x=10-y=10-6=4$

So answer:
Volume of 15% saline solution : 4 mililiters
Volume of 40% saline solution: 6 mililiters.

What's the conversion factor used to convert miles to yards

Answers

The required, formula for converting miles to yards: yards = miles x 1760.

The conversion factor used to convert miles to yards is 1760. This means that 1 mile is equal to 1760 yards.

To convert from miles to yards, simply multiply the length in miles by 1760. For example, 5 miles is equal to 8800 yards (5 x 1760 = 8800).

Here is the formula for converting miles to yards:

yards = miles x 1760

Here are some examples of converting miles to yards:

1 mile = 1760 yards

2 miles = 3520 yards

3 miles = 5280 yards

4 miles = 6960 yards

5 miles = 8800 yards

Learn more about conversion factors here:

brainly.com/question/30567263

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use this conversion factor
1mile=1760 yards

What is :

(49^x)(7^x^2)=2401^2

Answers

$(49^x)(7 ^(x^2))=2401^2 \n \n( (7^2)^x)(7 ^(x^2))= (7^4) ^2 \n \n 7 ^(2x)\cdot 7^(x^2)=7^(8) \n \n 7 ^(2x+x^2) =7^(8) \n \n2x+x^2 =8$

$x^2-2x-8 = 0\n \n a=1, \ b=-2, \ c=-8 \n \n\Delta =b^2-4ac = (-2)^2 -4\cdot1\cdot (-8) = 4 +32 =36 \n \nx_(1)=(-b-√(\Delta) )/(2a)=(2-√(36))/(2 )=( 2-6)/(2)=(-4)/(2)=-2 \n \nx_(2)=(-b+√(\Delta) )/(2a)=(2+√(36))/(2 )=( 2+6)/(2)=(8)/(2)= 4 \n \nAnswer: \ x=-2 \ \ or \ \ x=4$

$(49^x)(7^(x^2))=2401^2\n \n7^(2x) \cdot7^(x^2)=(7^4)^2\n \n7^(2x+x^2)=7^8\ \ \ \Leftrightarrow\ \ \ 2x+x^2=8\ \ \ \Leftrightarrow\ \ \ x^2+2x-8=0\n \nx^2-2x+4x-8=0\ \ \ \Leftrightarrow\ \ \ x(x-2)+4(x-2)=0\n \n(x-2)(x+4)=0\ \ \ \Leftrightarrow\ \ \ ( x-2=0\ \ \ \vee\ \ \ x+4=0)\n.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x=2\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x=-4$

What is the square root of 16

Answers

Answer:

the square root of 16 is 4

Step-by-step explanation:

How do solve for 2m2 +2m-12=0
This if quadratic formula

Answers

$2m^2 +2m-12=0 \ /:2\n \nm^2+m-6=0\n \nm^2+3m-2m-6=0\n \nm(m+3)-2(m+3)=0\n \n(m+3)(m-2)=0\n \nm+3=0\ \ \ \vee\ \ \ m-2=0\n \n.\ \ \ \ m=-3\ \ \ \ \ \ \ \ \ \ \ \ m=2$

What is the value of the expression when a = 5 and b = 3? 4a^2 5b^3a. 55
b. 74
c. 81
d. 145

Answers

$4a^25b^3\n\nsubtitute\ the\ values\ of\ a=5\ and\ b=3\ to\ the\ expression:\n\n4(5^2)\cdot5(3^3)=4(25)\cdot5(27)=100\cdot135=\boxed{13,500}$

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The baseball team is ordering hats for the upcoming season. The hat companycharges a certain amount per hat plus an initial fee of $55. There are 14 players on thebaseball team. If there are 14 players on the baseball team and the hat order comes to atotal of $363, how much does each hat cost?