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svetoff [14.1K]
3 years ago
11

Plllllllllllllllllllllllzzzzzzzzzzzz help me out I’m confused 25 points

Mathematics
1 answer:
jasenka [17]3 years ago
5 0

Answer:

-4+(-2)=-6

Step-by-step explanation:

So the arrow goes from -4 to -6 so the end answer is -6 and -4-2 is -6

You might be interested in
The histograms below show the mass (in kilograms) of the offensive linemen on the University of Mount Union and the University o
Sedbober [7]

Answer:

Option C is correct.

None of the options is true.

Step-by-step explanation:

The histograms for the question is missing, so, it was obtained online and is attached to this solution of the question.

To check which statements are true, we first find the average using the midpoint technique.

The midpoint for each of the ranges is presented below

110 to 120 = 115

120 to 130 = 125

130 to 140 = 135

140 to 150 = 145

150 to 160 = 155

Sum of weights for Alabama linemen using the midpoint technique

= (125×4) + (135×8) + (145×4) + (155×2)

= 2470 kg

Average = (2470) ÷ (4+8+4+2)

= 137.22 kg

Sum of weights for Mount Union linemen

= (115×5) + (125×4) + (135×6) + (145×2)

= 2,175 kg

Average = (2,175) ÷ (5+4+6+2)

= 127.94 kg

So, it is evident that the average weight of Mount Union linemen isn't more than that of Alabama linemen.

Statement 2

All of the Alabama linemen have more mass than all of the Mount Union linemen

This is evidently not true because from the histogram, some linemen from Alabama have masses between 120 and 130, 130 and 140 & there are linemen from Mount Union that have masses between 130 and 140 & 140 and 150, so, it isn't right to say that all of the Alabama linemen have more mass than all of the Mount Union linemen.

So, none of the options is correct, option C.

Hope this Helps!!!

3 0
3 years ago
Somebody please help! posted picture of question
Neko [114]
Answer:
3x² - 2x - 6

Explanation:
We are given that:
f (x) = 3x² - 2
g (x) = 2x + 4

We want to find the value of (f - g)(x), this means that we will simply subtract g (x) from f (x) as follows:
(f - g)(x) = f (x) - g (x)
(f - g)(x) = 3x² - 2 - (2x + 4)
(f - g)(x) = 3x² - 2 - 2x - 4
(f - g)(x) = 3x² - 2x - 6

Hope this helps :)
8 0
4 years ago
Read 2 more answers
Which equations represent the line that is perpendicular to the line 5x − 2y = −6 and passes through the point (5, −4)? Select t
Kruka [31]

Answer:

y+4=-(2/5)(x-5) ----> equation of the line into point slope form

y=-(2/5)x-2 ----> equation of the line into slope intercept form

2x+5y=-10 ----> equation of the line in standard form

Step-by-step explanation:

step 1

Find the slope of the given line

we have

5x-2y=-6

isolate the variable y

2y=5x+6

y=2.5x+3

The slope m of the given line is m=2.5

step 2

Find the slope of the line perpendicular to the given line

We know that

If two lines are perpendicular, then their slopes are inverse reciprocal each other

so

m1=5/2

the inverse reciprocal is

m2=-2/5

step 3

Find the equation of the line into point slope form

y-y1=m(x-x1)

we have

m=-2/5

point (5,-4)

substitute

y+4=-(2/5)(x-5) ----> equation of the line into point slope form

y=-(2/5)x+2-4

y=-(2/5)x-2 ----> equation of the line into slope intercept form

Multiply by 5 both sides

5y=-2x-10

2x+5y=-10 ----> equation of the line in standard form

4 0
3 years ago
Read 2 more answers
Are the two parabolas defined below similar or congruent or both? Justify your reasoning. Parabola 1: The parabola with a focus
Dominik [7]

Answer:

They are similar by a factor of 14

Step-by-step explanation:

From the general equation of a parabola opening up (since the directrix is on the y axis and the focus is upwards this line) the focus coordinates are:

Focus = (h,k+p) = (0,2)

So h=0 and k+p=2, for the directrix:

y = k-p=-4

solving k and p from the two equations above:

k=-1 and p=3

So for Parabola 1 the equation would be:

x^{2} =4*3(y+1)

For Parabola 2 the general equation is:

x^{2} =4*(3/2)(y)

here h=0, k=0, p=3/2 so focus is (0,3/2), directix is y=-3/2, they have the same orientation.

they are not congruent. For them to be similar it must comply:

x_{1}=k x_{2}\\y_{1}=ky_{2} => (1/12)x_{1} ^{2} -1 = k(1/6)x_{2} ^{2}

replacing x_{1} and solving for k:

(1/12)(kx_{2}) ^{2} -1 = k(1/6)x_{2} ^{2}\\ (1/12)k^{2} x_{2}^{2}-1 = k(1/6)x_{2} ^{2}\\k-12 = (12/6)=2\\k = 2+12=14\\

They are similar by a factor of 14

8 0
3 years ago
Use the formula to evaluate the series 1/3+1/9+1/27+1/81 Answers A 40/81 B 37/81 C 39/81
svlad2 [7]
I believe the answer is A.
4 0
3 years ago
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