7 grade math hellp me

7 Grade Math Hellp Me

Answers

Answer 1

Answer:

P=25

Step-by-step explanation:


Related Questions

Hey y’all , please give me the correct answer.

Answers

Answer:

-s-6>-7

Step-by-step explanation:

Just ask!

Hope this helps. :)

Answer:

-s-6>-7 (top right)

Step-by-step explanation:

s = -18         > means what is on the left is bigger than what is on the right

top right one = - s - 6 ­> - 7

top right one = - ( - 18) - 6 > -7

top right one = 18 - 6 > -7

top right one = 12 is bigger than -7

how do you compute the area of the triangle

Answers

the area of a triangle can be calculated by

1/2 *b*h

or
bh/2

(b is base;H is height)

(PLS HELP) The proportional relationship between the number of inches a candle has burned away, b, at any time in hours, t, can be represented by the equation b=1.75t. At what rate does the candle burn, in inches per hour?

Answers

Answer:

candle burns 1 inch every 1 3/4 hours or 1 inch every 1 hour, 45 minutes

Step-by-step explanation:

Solve the equation by using quadratic formula . Show your work! Answer maybe in radical or decimal form .

2x^2 + 4x – 5 = 0

Answers

Answer:

[tex]x_1=\frac{-2+\sqrt{14}}{2}\approx 0.871,x_2=\frac{-2-\sqrt{14}}{2}\approx-2.871[/tex]

Step-by-step explanation:

[tex]2x^2+4x-5=0[/tex]

[tex]x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]

[tex]x=\frac{-4\pm\sqrt{4^2-4(2)(-5)}}{2(2)}[/tex]

[tex]x=\frac{-4\pm\sqrt{16+40}}{4}[/tex]

[tex]x=\frac{-4\pm\sqrt{56}}{4}[/tex]

[tex]x=\frac{-4\pm2\sqrt{14}}{4}[/tex]

[tex]x=\frac{-2\pm\sqrt{14}}{2}[/tex]

[tex]x_1=\frac{-2+\sqrt{14}}{2}\approx 0.871,x_2=\frac{-2-\sqrt{14}}{2}\approx-2.871[/tex]

What is the equation of the line that passes through the point (-4,-2)(−4,−2) and has a slope of -\frac{1}{2}− 2 1 ​ ?

Answers

Answer:

Question not clear. I cant see the value for slope.

Step-by-step explanation:

what would the algebraic expression be for the product of 3 and x increased by 20

Answers

Answer:

3x + 20

Step-by-step explanation:

Product is for multiplication therefore, the product of 3 and x is 3x.

increased = addition

Overall, the product of 3 and x increased by 20 is 3x + 20.

27.81 + (-13.97) please help

Answers

Answer:

13.84

Step-by-step explanation:

Answer:

13.84

Step-by-step explanation:

 im always here to help...

Find the slope of the line going through the points (-4, 13) and (8,-11).

Answers

Answer:

The Slope is -2

Step-by-step explanation:

The entered points belong to a decreasing, linear function.

Equation: y = -2x + 5.

Answer:

Slope = -2

Step-by-step explanation:

[tex]\mathrm{Slope\:between\:two\:points}:\quad \mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}\\\\left(x_1,\:y_1\right)=\left(-4,\:13\right),\:\left(x_2,\:y_2\right)=\left(8,\:-11\right)\\m=\frac{-11-13}{8-\left(-4\right)}\\\mathrm{Refine}\\m=-2[/tex]

How to factor 10n^2 +n -3
and 2d^2=8de+6e^2

Answers

Answer:

(5+-1) (2+2

Step-by-step explanation:

1/3x^2 = -3

The solution to the equation is ___?

A) x = 3
B) x = -3
C) x = ±3
D) no solution

Answers

[tex] \frac{1}{3} {x}^{2} = - 3 \\ = > {x}^{2} = - 3 \times 3 \\ = > {x}^{2} = - 9 \\ = > {x} = \sqrt{ - 9} \\ = > x = ±3[/tex]

Answer:

C) x = ±3

Hope you could get an idea from here.

Doubt clarification - use comment section.

Can someone Please help me on this math problem

Answers

Answer:

  False

Step-by-step explanation:

Residuals are the measure of the error in the fit. The square of their sum gives no weight to the sign of the error, but gives greater weight to larger errors. The fit will be better when the error is smaller. In this scenario, Line B is a better fit.

The statement that Line A better fits the data is FALSE.

1). 4x - (2x - 15)
2). -8 + 9x (-4 + 12x)
3). 15 - 14 ( 1 + 4x )

Answers

Answer:

1). 4x - (2x - 15)

        => 4x - 2x + 15

        => 2x + 15

2). -8 + 9x (-4 + 12x)

        => -8 - 36x + 108x²

3). 15 - 14 (1 + 4x)

        => 15 - 14 - 56x

        => 1 - 56x

Step-by-step explanation:

Hoped this helped.

Answer:

[tex]\sf 1)\: 4x-\left(2x-15\right)[/tex]

Apply Distributive property:

[tex]\sf 4x-2x+15[/tex]

Combine like terms:

[tex]\boxed{\sf 2x+15}[/tex]

_____________

[tex]\sf 2)\:-8 + 9x (-4 + 12x)[/tex]

Apply Distributive property:

[tex]\boxed{\sf -8-36x+108x^2d}[/tex]

_______________

[tex]\sf 3)\: 15 - 14 ( 1 + 4x )[/tex]

Apply Distributive property:

[tex]\sf 15-14-56x[/tex]

Subtract numbers:

[tex]\boxed{\sf 1-56x}[/tex]

_______________________________________

Help help help help math math math

Answers

Answer:

27 in²

Step-by-step explanation:

The area (A) is calculated as

A = πr² ( r is the radius ) , then

A = π × 3² = 3 × 9 = 27 in²

Find the vertical asymptote(s) of f of x equals quantity x squared plus 3x plus 6 end quantity over quantity x squared minus 4.

Answers

Answer:

  x = -2, x = 2

Step-by-step explanation:

The denominator factors as ...

  x^2 -4 = (x -2)(x +2)

The numerator has no factors that cancel either of these, so the function will have vertical asymptotes where the denominator is zero: at x = -2 and x = 2.

What's the value of x?

Answers

Acoording to roman numerals,X is 10

2.
In a box of 80 glasses, 3 are broken.
Work out the percentage of broken glasses in the box.

Answers

Answer: the answer is 3.7%

Step-by-step explanation:

We know there’s total 80 glasses and if 3 are broken we can represent it in a fraction which is 3/80

3/80=0.0375

to find percentage take 0.0375 and multiply it by 10 to get 3.7

therefor the answer is 3.7%

A camping leader bought the items listed in the table for his team.
What is the average cost of an item in his purchase?

$4.55
$5.93
$6.25
$6.35

Answers

Answer:

5.93

Step-by-step explanation:

6 x 9.45 = 56.7

10 x 6.95 = 69.5

14 x 5.50 = 77

9 x 3.10 = 27.9

56.7 + 69.5 + 77 + 27.9 = 231.1

6 + 10 + 14 + 9 = 39

231.1 / 39 = 5.925 = 5.93

If 8.4 million baby boomers out of a total 76 million baby
boomers have already retired, what percentage of this
group will retire in the next 20 years? Round to the
nearest whole percent.

Answers

Answer: Undefined: Needs more data

Step-by-step explanation: What is the timespan over which they have retired? Is this a direct relationship?

If x^2 - 6x +8=0, then x-4=0 or x-2=0.

Answers

Step-by-step explanation:

X - 4 = 0

X = 4

X - 2 = 0

X = 2

So the values of x are 2 and 4

Anne pays cash for a Tv. The store owner gives her a 10% discount. She pays $702. How much was the price of the Tv before a discount?

Answers

Answer:

$780

Step-by-step explanation:

P = Original Price

P (100% - 10%) = $702

P (90%) = $702

(P (.9)) / .9 = $702 / .9

P = $780

Check answer:

$780 (90%) = $702

please helpppppppppp​

Answers

Answer:

the ANSWER IS D

Step-by-step explanation:

because its multiplication

I need help asap!!

Triangle 1 is composed of line segments AB, BC, and CA.
Triangle 2 is composed of line segments DE, EF, and FD.
The triangles are similar with a scale of 5:2.
Select the true statement about the proportions of the sides.

Answers

Similar triangles that have a scale ratio other than 1 are not congruent triangles.

The true statement about the proportions of the sides is [tex]\frac{AC}{DF} = \frac 52[/tex]

The scale ratio is given as: 5 : 2

And the corresponding sides are given as:

AB and DE.BC and EF.CA and FD.

The above highlights mean that,

[tex]\frac{AC}{DF} = \frac{BC}{EF} = \frac{AB}{DE} = \frac 52[/tex]

Hence, the true statement is [tex]\frac{AC}{DF} = \frac 52[/tex]

Read more about similar triangles at:

https://brainly.com/question/14285697

i need 20 characters, but the question is the photo

Answers

Answer: The answer is in the first image.

Explanation: The explanation is in the second image.

The U.S. Senate has 100 members. After a certain election, there were 12 more Democrats than Republicans, with no other parties represented. How many
members of each party were there in the Senate?

Answers

100-12=88
88/2=44
100-44=56
(56-44=12)

56 democrats
44 republicans

i posted this more then 2 times can someone help

Answers

The question isn’t showing

Answer:

yes

Step-by-step explanation:

yes ......................................

What is the equation of the line that passes through the point (-8,3) and has a slope of -1/4

Answers

The slope is -1/4, which is -0.25x. We know that we are exactly 8 units to the left of the y axis, so we can use the slope to determine the change within the coordinates as the line moves across the graph. The slope has a rise of -1 and a run of 4, meaning every 4 units to the right will be 1 unit up. We must move 8 units to the right, which in turn moves the graph down 8 quarter units. 8 x (1/4) is 2, so we know that the graph has moved down 2 units. (Down because the graph has a negative slope). (-8,3)->(0,1). From this coordinate, we can see the y intercept is 1. Since y=mx+b, we can write y=-1/4x+1. This is your equation. (Sorry for the length, wanted to be thorough)

y=-1/4x+1 is the equation of the line that passes through the point (-8,3) and has a slope of -1/4

What is Slope of Line?

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is

m=y₂-y₁/x₂-x₁

We have to find equation of  the line that passes through the point (-8,3) and has a slope of -1/4

m=-1/4

Let us find y intercept

3=-1/4(-8)+b

3=2+b

b=1

Hence, y=-1/4x+1 is the equation of the line that passes through the point (-8,3) and has a slope of -1/4

To learn more on slope of line click:

https://brainly.com/question/16180119

#SPJ2

How i can answer this question, NO LINKS, if you answer correctly i will give u brainliest!

Answers

Answer:

4:6 = 2:3, the answer is C

Step-by-step explanation:

they visited 4 museums as displayed on the bar and 6 beaches also presented on the bar, which would mean 4:6 and would simplify to 2:3

the graphs show information about the different journeys of 4 people

Answers

Answer:

sorry id like to help but i need more info.

Step-by-step explanation:

i hope this helps!

Parallelogram ABCD has vertex coordinates A(0, 1), B(1,3), (4,3), and D(3,1). It is translated 1 unit to the right and 3 units down and then rotated 180°clockwise around the origin. What are the coordinates of A?

Answers

Answer:

  A'(-1, 2)

Step-by-step explanation:

Translation 1 right and 3 down is accomplished by the transformation ...

  (x, y) ⇒ (x +1, y -3)

Rotation 180° is accomplished by ...

  (x, y) ⇒ (-x, -y)

Then the composition of transformations gives ...

  (x, y) ⇒ (-x -1, -y+3)

The transformed coordinates of A(0, 1) are ...

  A(0, 1) ⇒ A'(-0 -1, -1 +3) = A'(-1, 2)

Allen is showing his work in simplifying −8.3 + 9.2 − 4.4 + 3.7. Identify any errors in his work or in his reasoning.


Step Work Reasoning
−8.3 + 9.2 − 4.4 + 3.7 Original problem
1 −8.3 + 9.2 + 4.4 + 3.7 Additive inverse
2 −8.3 + 4.4 + 9.2 + 3.7 Commutative property
3 −8.3 + (4.4 + 9.2 + 3.7) Associative property
4 −8.3 + 17.3 Simplify
5 9 Simplify
He did not make any errors.
Step 1: He wrote −4.4 incorrectly as + 4.4.
Step 2: He identified changing the order of the numbers as the commutative property, which is incorrect.
Step 3: He identified changing the grouping of the numbers as the associative property, which is incorrect.

Answers

Step-by-step explanation: First, you use the PEMDAS method which is parenthese, exponent, multiplication division, addition and subtraction.

So,  there is parenthese, exponent, multiplaction or division.

Now, first you add -8.3 + 9.2= 0.9, then subtract 0.9 by 4.4= -3.5, now add -3.5 + 3.7= 0.2

Use the original problem and use the PEMDAS method.

Hope this helps!!

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