MATHEMATICS HIGH SCHOOL

What is the value of the expression (3a-b)/(6(b+a)) when a = 4 and b = -2?

Answers

Answer 1
Answer:

Answer:-2

Step-by-step explanation:3(4) - (-2) ÷ 6(-2) + 4

= 12 + 4 ÷ -12 + 4

= 16 ÷ -8

= -2
Answer 2
Answer:

Answer:

It will be 7/6

Step-by-step explanation:

Plug the values of a and b in the expression

You should take care in the fraction first

Then it will be ( 12 + 2 )/ 6 (-2+4)

= 14 / 12 = 7/6

Related Questions

Express the series using sigma notation. 6 + 9 + 12 + 15.abcd
The formula for the area A of a trapezoid is A=1/2(b1+b2)h, where b1 and b2 represents the lengths of the bases and h represents the height. Which equation can be used to find the height of a trapezoid?A. h=2A-b1-b2 B. h=2A/b1+b2 C. h=A(b1+b2)/2 D. h=A-2/b1-b2
The association strategy is used to___________informationa. Analyze and evaluatec. Forgetb. Memorized. Define
A livestock pen is built in the shape of a rectangle that is twice as long as it is wide. The perimeter is 48 feet. If the material used to build the pen is $1.85 per foot for the longer sides and $2.35 per foot for the shorter sides (the shorter sides have gates, which increase the cost per foot), find the cost to build the pen.
How many milliliters equal 891 cm3?I know the answer is 891 ml but how do i solve the problem to get the answer

A researcher found that 55% of families in the United States have one child under the age of 21, 22% have two children under the age of 21, 15% have three children under the age of 21, 5% have 4 children under the age of 21and 3% have 5 or more children under the age of 21. If a family is selected at random, what is the probability the family has 1 or 3 children under the age of 21?

Answers

Answer:

67% or 0.67

Step-by-step explanation:

Given that:

P(1 child under age 21) = 55%

P(2 children under age 21) = 22%

P(3 children under age 21) = 15%

P(4 children under age 21) = 5%

P(5 or more children under age 21) = 3%

If a family is selected at random, what is the probability the family has 1 or 3 children under the age of 21?

P(1 or 3 children under age 21):

Either the selected family has 1 child under 21 years of age OR the selected family has 3 children under 21 years of age ;

P(1 child under age 21) + P(3 children under age 21)

= 55% + 15%

= 67% = 0.67

How do you find rhe slope of (12,-18) and (-15,-18)

Answers

slope of 2 points is
if you has the points
(x1,y1) and (x2,y2)

slope=(y2-y1)/(x2-x1)

we are given
(12,-18)
(-15,-18)

we can either take shortcut and recocnize that -18-(-18)=0 so that make the slope 0

or we can continue
(-18-(-18))/(-15-12)=0/-27=0


slope=0
you do Y2-Y1/ X2-X1, so -18--18(change sighn so it would be -18+18) which equals 0, then -15-12= -27, 0/-27= 0 so the slope would be 0

X + x - 5 greater than equal to 33

Answers

To write this inequality first lets write the word form. The determine the symbol, and write it out:-

x + x - 5 greater than or equal to 33

greater than or equal to sign is ≥.

lets write it out with the sign:-

x + x - 5 greater than or equal to 33.
x + x - 5 ≥ 33

If we were to write this in correct words it would be 

A number plus a number minus five, is greater than or equal to thirty-three. 

Hope I helped ya!! xD
x+x-5 \geq 33\n\n2x -5 \geq 33\n\n2x -5 + 5 \geq 33 + 5\n\n2x \geq 38\n\n(2x)/(2) \geq (38)/(2)\n\n\boxed{\bf{x \geq17}}

Solve for m: 8(m+5)=16 ?

Answers

8(m+5)=16
8m+40=16
8m=24
m=3
8+5=13 then 16 -13 is 3=m

From a point p on level ground, the angle of elevation of the top of a tree is 60°. If the tree is 39m high, how far is its base from p

Answers

Hello,

tan 60°=√3
d/39=tan 60°==>d=39/√3=39√3/3=13√3=22,516660498... (m)

Solve 2cos^2x+3cosx-2=0

Answers

\bf 2cos^2(x)+3cos(x)-2=0\impliedby \textit{so, notice is just a quadratic} \n\n\n\ [2cos(x)~~-~~1][cos(x)~~+~~2]=0\n\n -------------------------------\n\n 2cos(x)-1=0\implies 2cos(x)=1\implies cos(x)=\cfrac{1}{2} \n\n\n \measuredangle x=cos^(-1)\left( (1)/(2) \right)\implies \measuredangle x= \begin{cases} (\pi )/(3)\n\n (5\pi )/(3) \end{cases}\n\n -------------------------------\n\n cos(x)+2=0\implies cos(x)=-2

now, for the second case, recall that the cosine is always a value between -1 and 1, so a -2 is just a way to say, such angle doesn't exist.
Other Questions
If a case of paper contains 16 packages of paper, and each package contains 500 sheets, how many sheets of paper are in a case? A. 7000 B. 8000 C. 5000 D. 4000
What is an equation of the line that passes through the point (-2, -3) and isparallel to the line 4x - y = 12
Which is the best way to solve the equation x^2 = n?​
How do you add 0.89+0.657?