MATHEMATICS HIGH SCHOOL

Solve 3x2 + 2x + 7 = 0. Round solutions to the nearest hundredth.(A)x ≈ −1.90 and x ≈ 1.23
(B)x ≈ −1.23 and x ≈ 1.90
(C)x ≈ −0.44 and x ≈ −3.56
(D)No real solutions

Answers

Answer 1
Answer:

It is d  work shown in the picture

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The equation of the line of best fit of a scatter plot is y = 6x − 9. What is the slope of the equation? –6 –9 9 6

Answers

Answer:

D. 6

Step-by-step explanation:

The line of best fit represents the relation between two variables, usually indicated as x and y, where "x" is the independent variable and "y" is the dependent variable.

The general form of equation of the line of fit y = mx + b, where "m" represents the slope and b represents the y-intercept.

The given line of best fit of a scatter plot is y = 6x - 9

Now compare the given equation with the general and find the slope.

When we comparing, we get m = 6 which is the slope of the given equation.

Therefore, answer is D. 6
6 is the answer because it is 6x therefore the gradient increases by 6 each time

a store mixes red fescue worth $12 per pound and chewings fescue worth $16 per pound. The mixture is to sell for $15 per pound. Find out how much of each should be used to make a 552- pound mixture.

Answers

Answer is: 414 pounds of red fescue and 138 pounds of chewings fescue is needed to produce 552 pounds of mixture.

Explanation:
x - how much of red fescue is needed for one pound of mixture
y - how much of chewings fescue is needed for one pound of mixturex*12+ y*16 = 15x + y = 1
so, x=1-y
putting it into first line:(1-y)*12 + y*16 = 15
12 - 12*y + 16*y = 15
4*y = 3
y=3/4
so, x= 1-3/4; x=1/4So to produce 552 pounds of mixture we need..To produce 1 pound of mixture we need: 3/4 pound of red fescue and 1/4 pound of chewing fescue so to produce 552 pounds of miture we need:
552*3/4 - red fescue, which is 414 pounds needed
and
552/4 - chewings fescue, which is 138 pounds needed

Answer:

e+ f = 8 (total solution)

8e + 56f = 20*8 (total saline)

---

e+ f = 8

e + 7f = 20

------------ Subtract

-6f = -12

f = 2

e = 6

Containing the points (-1,2) and (5,-4)

Answers

the equation conatining the points would be
y=mx+b, m=slope b=y inercept
find slope

slope=(y1-y2)/(x1-x2)=(2-(-4))/(-1-5)=(6)/(-6)=-1

slope is -1
y=-1x+b

input one of the points and solve for b
2=-(-1)+b
2=1+b
subtract 1 form both sides
1=b

answer=
y=-1x+1

A function is shown in the table.. . . xg(x). −22. −1−3. 02. 117. . . Which of the following statement is a true for this function? The function is increasing from x = −2 to x = −1..
The function is increasing from x = 0 to x = 1..
The function is decreasing from x = −1 to x = 0..
The function is decreasing from x = 0 to x = 1..

Answers

Only one statement is correct:
B ) The function is increasing from x = 0 to x = 1
Explanation: g ( 0 ) = 2, g ( 1 ) = 17,  2 < 17. 

Answer:

The statement that is true for the function is:

The function is increasing from x = 0 to x = 1.

Step-by-step explanation:

We are given a table of values for the function g(x) as:

              x                g(x)

              -2                 2

               -1                 -3

                0                 2

                1                  17

    By looking at the table of values of the function g(x) we have:

The function g(x) is firstly decreasing from x=-2 to x=-1

Then it is increasing from x=-1 to x=1.

Hence, the statement that holds true from the given set of values of function g(x) is:

The function is increasing from x = 0 to x = 1.

( Since, the function takes the value at x=0 as g(x)=2

and the function takes the value at x=1 as g(x)=17)

A newborn weighs 8 pounds and 5 ounces. There are 453.59 grams per pounds. What is the infant's weight in grams ?

Answers

453.59x8=3628.72

5 ouces= 453.59/16x5=141.746875

141.746875+3628.72=3770.466875 grams

hope this helps

Which point is on the line 4y-2x=0?a- (-2,-1)
b- (-2,1)
c- (-1-2)
d- (1,2)

Answers

To figure this out, we just need to plug in the points.

4(-1) - 2(-2) = 0
-4 - (-4) = 0
-4 + 4 = 0
0 = 0 
True

The correct answer is a. (-2, -1).
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