solve the system of equations-6x+7y=9 and 2x-2y=-4

Answer:

66. 4/8

Step-by-step explanation:

Answer:

-27 -> 27,  - 8/3 -> 8/3

Step-by-step explanation:

-27 + 27 = 0

-3/8 + 3/8 = 0

Answer:

-2

Step-by-step explanation:

When they give you 2 points use the formula so y2-y1/x2-x1

So -2-8/1 - -4

-10/1+4 so -10/5 = -2

Answer:

5

Step-by-step explanation:

area of a square= side x side

[tex]\sqrt{25}[/tex] = 5

Answer:

no, exponents are how many times the base is used, it would be 2x2x2... so on until there are 28 2s

Step-by-step explanation:

Answer:

48 meals

Step-by-step explanation:

36lbs ÷ 3/4lbs = 48

Answer:

[tex]\frac{9\pi }{4}[/tex]

Step-by-step explanation:

Paraboloid z = 6 + 2x^2 + 2y^2 ----- ( 1 )

plane z = 12

equation 1 becomes

12 = 6 + 2( x^2 + y^2 )

hence : ( x^2 + y^2 )  = 3

This shows that the solid lies under the parabolic and above the disk  0 : x^2 + y^2 ≤ 3

attached below is the remaining part of the solution

There are 56 people in each section

The given parameters are:

Total = 896

Sections = 16

The number of people per section is

People = Total/Sections

This gives

People = 896/16

Evaluate

People = 56

Hence, there are 56 people in each section

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Answer:

the slope of the regression equation for predicting our Exam 2 scores from Exam 1 scores is 0.492

And the y-intercept of the regression equation for predicting our Exam 2 scores from Exam 1 is 33.688

Step-by-step explanation:

Given the data in the question;  

mean X" = 86

SD σx = 10

Y" = 76

SD σy = 8.2

r = 0.6

Here, Exam 2 is dependent and Exam 1 is independent.

The Regression equation is

y - Y" = r × σy/σx  ( x - x" )

we substitute

y - 76 = 0.6 × 8.2/10  ( x - 86 )

y  - 76 = 0.492( x - 86 )

y  - 76 = 0.492x - 42.312

y = 0.492x - 42.312 + 76

y = 0.492x + 33.688

Hence, the slope of the regression equation for predicting our Exam 2 scores from Exam 1 scores is 0.492

And the y-intercept of the regression equation for predicting our Exam 2 scores from Exam 1 is 33.688

Step-by-step explanation:

Multiply to remove the fraction, then set equal to

0 and solve.

Inequality Form:

b<48.59

Interval Notation:

(−∞, 48.59)

The solution of the inequality 11.3 > b /4.3 is b< 48.59 along with the number line.

Given Inequality:

11.3 > b /4.3

To solve the inequality 11.3 > b / 4.3,

Multiply both sides of the inequality by 4.3 to eliminate the fraction:

11.3 * 4.3 > (b / 4.3) * 4.3

48.59 > b

The solution to the inequality is b < 48.59.

This means that any value of b that is less than 48.59 will satisfy the inequality.

To graph the solution, indicate that b is less than 48.59 by using an open circle at 48.59 and shading the line to the left of the open circle to represent all the values that satisfy the inequality.

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Answer:

b

Step-by-step explanation:

Area of parallelogram = Area of 2 small triangles

Therefore,

[tex]2( \frac{1}{2} \times 15.1 \times 7) = 105.7 {ft}^{2} [/tex]

Answer:

there are 2.5 gallons in 20 pints of milk, or she drinks 2.5 gallons of milk

Step-by-step explanation:

If she drinks 20 pints of milk, you have to convert by dividing.

1 qt= 2 pints

20/2=10

20 pints = 10 quarts

Then, 1 gal = 4 qts

10/4= 2.5

So, there are 2.5 gallons in 20 pints of milk, or she drinks 2.5 gallons of milk.

Hope this helps!!

-Ketifa

(Can I get brainliest?)

Answer:

ehoif :)

Step-by-step explanation:

Answer:4

Step-by-step explanation: Since she did it by completing the square, then you must do the same thing to get the same form so you can see what that number is.

So first subtract the constant which is -12 so we need to add twelve to get the constant on the other side. So we now have 2x^2+16x=12

The constant of the x^2 must be 1 so we need to divide by 2 on every term to get x^2+8x=12

So to make it so to get a perfect factor we need to divide the x factor by 2 so we get 4.

So the answer is 4 cause it is a perfect factor so were going to get 4 on both factors.

Answer:

4

Step-by-step explanation:

x²+2(x)(?)+?²=22

multiply by 2 because the coefficient of the higher degree in the first equation is 2

2x²+2(2(x)(?))+2(?²)-2(22)=0

2x²+4x(?)+2?²-44=0

Comparison

4x(?)=16x

?=4

2?²-44=-12

So, 2?²=-12+44

2?²=32

?²=16

?=4

Answer:

-7.5

Step-by-step explanation:

-4.2×-4.2 = 17.64

-132.3/17.64= -7.5

The break even of a company is when cost equals selling function. The break even of xyz company is 500000 units.

Given that:

[tex]c=500000+5q[/tex] --- cost function

[tex]s = 6q[/tex] --- selling function

The break even is when the functions are equal

i.e.

[tex]s = q[/tex]

So, we have:

[tex]6q=500000+5q[/tex]

Collect like terms

[tex]6q - 5q=500000[/tex]

[tex]q=500000[/tex]

The break even is at 500000 units

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Answer:

1/3

Step-by-step explanation:

To find the slope subtract the second y-coordinate from the first y-coordinate and divide it by the result of the second x-coordinate from the first.

-2 - -1 = -1

-12 - -8= -3

-1/-3 = 1/3

Answer:

the answer is 4/1. Or just 4.

Step-by-step explanation:

-8-(-12) is -8+12=4. Then -1-(-2) is -1+2=1.

Answer:

286.94 cm

Step-by-step explanation:

Data:

             Area = 8,607

             b1 = 105

             b2 = 123

      Area = 1/2 * (b1 + b2) * h

      h = 2 * Area/b1 + b2

      h = 2 * 8,607/105 + 123

     h = 286.94 cm

I'm not sure if it's right but that's what my calculator gave me.

Answer:

2 1/5 = 11/5  x 3 = 33/ 15

1 2/3 = 5/3 x 5 =  25/ 15

= 33 + 25 = 58/ 15 = 3 13/ 15

:)

Answer: Fraction form: 3 13/15

plz mark me brainliest.

Step-by-step explanation: Fraction form: 3x5=15 so 2/3=10/15 and 1/5=3/15 so 13/15 and 2+1=3 so 3 13/15. plz mark me brainliest

How to mark brainliest:

Tap the crown, if there is no crown reload (there must be 2 answers)

Answer:

Jacob had more home runs relative to his usual season average than Hugo did.

Step-by-step explanation:

The key solving this is to express their respective home runs in z-value forms.

Z = (x - ų)/óx

X = Current home runs

Ų = Mean

= Meanóx = Standard deviation

For Hugo,

X = Current home run = 31

Ų = Mean = 27

Óx = Stardard deviation = 1.6

Z = (x - ų)/óx

Z = (31 - 27)/1.6 = 2.5

Hope this helped!!!

The person who had more home runs relative to their usual seasonal average was Jacob.

Representing their home runs in z-value forms.

Where

= Meanóx = Standard deviation

To find the home run for Hugo,

Therefore,

Z = (x - ų)/óx

Z = (31 - 27)/1.6

= 2.5

Hence, Jacob had the most home runs relative to their usual seasonal average.

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Answer:

negative 8 times a number is the desired answer to this mathematical problem about algebra.

Answer:

7

Step-by-step explanation:

The range is the distance between the largest and smallest number. So 9-2=7

Hope this helped!

Answer: 9-2=7

Step-by-step explanation:Range is the highest value minus the lowest value in the data set.

Answer:

1 hour and about 15 minutes.

Step-by-step explanation:

because in an hour she walks 4.5 km. and 4.5•2=9 so just another km will be 10 so estimatly it'll be 1 hour and 15 minutes

2 hours 13 minutes 20 seconds

Answer:

x = 6

Step-by-step explanation:

3(2x-6) = 18

6x - 18 = 18

6x = 36

x = 6

the answer is B) both expressions are equivalent to 76 when t=3

Hope this helps :)

Answer:

D

Step-by-step explanation:

Hope i helped :)

Answer:

D. 60 Miles

Step-by-step explanation:

Answer:

Males: 29

Females: 16

Step-by-step explanation:

2x+ 13 = 45

2x = 45 - 13

2x = 32

x = 16

16 + 13 = 29

29 +16 = 45

Answer:

Step-by-step explanation:

3.

area of one triangular face = ½×16×30 = 240 in²

area of base = 30×9 = 270 in²

area of diagonal face = 34×9 = 306 in²

area of vertical face = 16×9 = 144 in²

surface area = 2×240 + 270 + 306 + 144 = 1,200 in²

volume = 240×9 = 2,160 in³

:::::

4.

area of one triangular face = ½×10×10.5 = 52.5 ft²

area of base = 10.5×6 = 270 ft²

area of diagonal face = 14.5×6 = 87 ft²

area of vertical face = 10×6 = 60 ft²

surface area = 522 ft²

volume = 52.5×6 = 315 ft³