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Fantom [35]
2 years ago
12

4

Mathematics
1 answer:
pychu [463]2 years ago
6 0

Answer:

  • Option B

Step-by-step explanation:

A.)

➝ -3d + 7 = -9

➝ -3d = -7 - 9

➝ -3d = -16

➝ d = -16/-3

➝ d = 16/3

  • Solution is d = 16/3

B.)

<u>➝</u> 8d + 7 = -4(-2d - 4)

➝ 8d + 7 = 8d + 16

➝ 8d - 8d = 16 - 7

➝ 0 = 9

  • It has no solution.

C.)

➝ 5d + 15 = 15

➝ 5d = 15 - 15

➝ 5d = 0

➝ d = 5/0

➝ d = 0

  • Solution is d = 0

D.)

➝ 2(d + 6) = -2d - 12

➝ 2d + 12 = -2d -12

➝ 2d + 2d = -12 -12

➝ 4d = 24

➝ d = 24/4

➝ d = 6

  • Solution is d = 6

Hence,

  • (Option B) 8d + 7 = -4(-2d - 4) has no solution.
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-4 square divided by 8
arlik [135]

Answer:

2

Step-by-step explanation:

If you square -4 it equals 16 and if you take that number and divibe it by 8 you get 2.

3 0
4 years ago
Find an equation of the line passing through the pair of points. Write the equation in the form Ax +By (5.3) and (4.1) C The equ
frosja888 [35]

Answer:

2x-y=7

Step-by-step explanation:

Here we are given two coordinates through which our lines passes through. Now we are going to use the two point form to find the equation of the line.

The two point form is given as

\frac{y-y_1}{x-x_1}=\frac{y_2-y_1}{x_2-x_1}

Here we are given two coordinates . Thus replacing them in the formula and simplifying it will give us the equation of the line.

\frac{y-1}{x-4}=\frac{3-1}{5-4}

\frac{y-1}{x-4}=\frac{2}{1}

(y-1)=2(x-4)

y-1=2x-8

subtracting y and  adding 8 on both sides we get

2x-y=7

Hence this is our equation of the line passing through (5,3) & (4,1)

7 0
3 years ago
A line that includes the point (1, 3) has a slope of -7. What is its equation in slope-intercept
Alex787 [66]

Answer:

y = -7x + 10

Step-by-step explanation:

Using a point slope form equation

y - y1 = m( x - x1)

Given

Point = ( 1 , 3)

Slope = -7

Insert the values into

y - y1 = m(x - x1)

x1 = 1

y1 = 3

y - 3 = m( x - 1)

m = -7

y - 3 = -7(x - 1)

Using a slope intercept form equation

y = mx + c

Open the bracket

y - 3 = -7x + 7

y = -7x + 7 + 3

y = -7x + 10

The equation of the line is

y = -7x + 10

6 0
3 years ago
the music hall has 20 boxes on thurs 2/5 were occupied, on friday 2/4 were occupied and o saturday 8/10 were occupied. Using sym
NikAS [45]
<span><span>1.       </span>The music hall has 20 boxes :
=> on thurs 2/5 were occupied
=> on friday 2/4 were occupied
=> and on saturday 8/10 were occupied.
Let’s find out which day has the most occupied space of the music hall.
2/5 + 2/4 + 8/10 = 6/20 + 7/20 + 10/20
Thurs 2/5 were occupied
=> 6/20 = 0.3
=> 20 * 0.3 = 6 boxes
Friday 2/4 were occupied
=> 7/20 = 0.35
=> 20 * 0.35 = 7 boxes
Saturday 8/10 were occupied.
=> 10/20 = 0.5
=> 20 * .5 = 10 boxes
Thus, during Saturday has the most number of occupied boxes.</span>



8 0
3 years ago
I got 6 questions plz help PLEASE HELP ASAP I DONT UNDERSTAND
GaryK [48]

The answers to your questions are,

1. Point, Line, and Plane

2. Ray: A ray is like a line, but the line takes off in one direction to infinity while the other side is like a line segment. The end of the line is called the endpoint.

3. They are both containing geometry statements.

4.Say you have an angle of QPR. About 45 degrees.

Place the compass point on the angle's vertex.

Set the compass to ant convenient width.

Draw an arc across each leg.

Compass can be adjusted at this point if desired.

From where the arc crosses a leg, make an arc in the angle's interior.

Without changing the compass width, repeat for the other leg.

Draw a line from Q to where the arcs cross

Done! :)

5. A diameter of the circle is drawn.

A perpendicular bisector of the diameter is drawn using the method described in Perpendicular bisector of a segment. This is also a diameter of the circle.

The resulting four points on the circle are the vertices of the inscribed square.

6.  In a regular hexagon, the side length is equal to the distance from the center to a vertex. In geometry, an equilateral triangle is a triangle in which all three sides are equal. In the familiar Euclidean geometry, equilateral triangles are also equiangular; that is, all three internal angles are also congruent to each other and are each 60°.

-Mabel <3

(This took me a bit to do. Brainliest is loved! <3)


8 0
4 years ago
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