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pantera1 [17]
3 years ago
8

Sample Response: A kite has two pairs of congruent

Mathematics
1 answer:
vlabodo [156]3 years ago
8 0

Answer:it’s A

Step-by-step explanation:

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Can anyone tell me what’s the answer??
maks197457 [2]

Answer:

x = 10

y = 25

Step-by-step explanation:

if you add the equations as they are then the 'y-term' is eliminated:

60x = 600

x = 10

substitute x=10 to find value of 'y':

40(10) + 4y = 500

400 + 4y = 500

4y = 100

y = 25

Check:

20(10) - 4(25) should equal 100

200 - 100 = 100

100 = 100

5 0
3 years ago
Rania solves the equation below by first squaring both sides of the equation.
Anuta_ua [19.1K]

Answer:

The extraneous solution is 4.

Step-by-step explanation:

First, let us calculate the value of 'x' without squaring both side of the expression. This is illustrated below:

-5 = 3x - 7

Collect like terms

-5 + 7 = 3x

2 = 3x

Divide both side by 3

x = 2/3.

Now, let us calculate the value of 'x' by squaring both side of the expression. This is illustrated below:

(-5)^2 = (3x - 7)^2

25 = (3x - 7)(3x - 7)

25 = 9x^2 - 21x - 21x + 49

9x^2 - 42x + 49 - 25 = 0

9x^2 - 42x + 24 = 0

Solving by factorisation:

Multiply the first term i.e 9x^2 and 3rd term i.e 24 together. The result is 216x^2.

Next, we shall obtain two factors of 216x^2 such that when we add them together, it will give the 2nd term i.e -42x in the equation. These factors are: -6x and -36x

Now we can write the above equation as:

9x^2 - 42x + 24 = 0

9x^2 - 6x - 36x + 24 = 0

3x(3x - 2) - 12(3x - 2) = 0

(3x - 12)(3x - 2) = 0

3x - 12 = 0 or 3x - 2 = 0

3x = 12 or 3x = 2

x = 12/3 or x = 2/3

x = 4 or 2/3.

We can see that when we solve the question without squaring both side, the value of x is 2/3. But when we solve by squaring both side, the value of x are 4 and 2/3.

Therefore, the extraneous solution to the question is 4.

6 0
3 years ago
I would really appreciate some help on this 7th grade math worksheet please
ivolga24 [154]

Answer:

Step-by-step explanation:

Find the next three terms: 9,4,-,1,-6,-11,<u>-16....</u>

This is arithmetic progression.

d = 4 - 9 = -5

-11 - 5 = -16

2) You know that........

The other integer is greater than 5 and the sign of the other number is + (positive sign)

Eg: (-5)+ 11 = 6

3) Cost of one gallon = 46.20/12 = $ 3.85

7 0
3 years ago
RR3-03 A posted speed limit of 55 mph means (Select the one BEST answer from the choices provided.) 8-2/43
Illusion [34]

A posted speed limit of 55 mph means that: You may drive 55 mph only under favorable conditions.

<h3>What is the speed limit?</h3>

Speed limits on road traffic, as used basically to set the legal maximum speed at which vehicles are permitted to utilize on a given stretch of road.

Now generally, speed limits are normally indicated on traffic signs reflecting the maximum allowable speed in kilometers per hour (km/h) or eevn miles per hour (mph). They are primarily set by the legislative bodies of national or provincial governments and then enforced by law enforcement agencies. This suggests that speed limits varies from road to road and is even absent in some certain areas.

Now, in this question we are told that the posted speed limit is 55 mph. Thus, from our definitions of speed limits above it is clear that A posted speed limit of 55 mph means that: You may drive 55 mph only under favorable conditions.

Read more about Speed Limit at; brainly.com/question/6457873

#SPJ1

4 0
2 years ago
Julianna has thirty two pieces of candy in a candy jar. Julianna only has two kinds of candy.
bazaltina [42]

The number of jolly rangers candy she has is 22. The number of twix bars she has is 11.

<h3>What are the linear equations that represent this question?</h3>

j + t = 33 equation 1

4t = 2j

j = 2t equation 2

Where:

j = number of jolly rangers

t = j = number of twix

<h3>How many twix candies does Julianna have?</h3>

Substitute for j in equation 1 using equation 2

2t + t = 33

3t = 33

t = 11

<h3>How many jolly candies does Julianna have?</h3>

Subsitute for t in equation 2

j = 11 x 2 = 33

To learn more about simultaneous equations, please check: brainly.com/question/25875552

#SPJ1

5 0
2 years ago
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