I need help its systems of equations 25 points

It's a good idea to get into the habit of

using parenthses when substituting

numbers in for variables.

Since x = -4 and y = -2, 5x - y is 5(-4) - (-2).

Now, 5(-4) is -20 and minus a negative 2

can be thought of as plus a positive 2.

So we have (-20) + (+2) which equals -18.

Answer:

25

Step-by-step explanation:

Answer:

25!!

Step-by-step explanation:

One side(s) = x+6

Perimeter (4s)= 124

4(x+6) = 124

4x + 24 = 124

4x = 124-24

x = 100/4 = 25

I hope im right!! ;)

Answer:

x = 20

Step-by-step explanation:

You can solve this problem using similar triangles; you know the triangles are similar due to the AAA property because of the Corresponding Angles Theorem.

To find x, you need to identify what sides 8 and x correspond to:

8 corresponds to 14 (6 + 8)

x corresponds to (x + 15)

Now, you need to find the scale factor by dividing 14 by 8:

14 ÷ 8 = 7/4

At this point, you can write and solve an equation for x:

7/4x = x + 15

3/4x = 15 (subtract x from both sides)

x = 20 (multiply both sides by 3/4)

Answer:

AB=5

Step-by-step explanation:

Triangle TAB is similar to triangle TWE. This can be proven through AA congruency. Because line AB is parallel to line segment WE, angle TAB is congruent to angle TWE (corresponding angles) and angle TEW is congruent to angle TEW(corresponding angles). Now, having proved that triangle TAB is similar to triangle TWE, we know that similar triangles have proportional sides. We can do [tex]\frac{TB}{AB} = \frac{TE}{WE}[/tex], plug in values for [tex]\frac{4}{AB} = \frac{16}{20}[/tex]  , simplify   [tex]\frac{4}{AB} = \frac{4}{5}[/tex], both fractions have a four in the numerator and must be equal to each other so AB=5.

Answer:

Now, the formulas for other trigonometry ratios are: Cot θ = 1/tan θ = Adjacent side/ Side opposite = AB/BC. Sec θ = 1/Cos θ = Hypotenuse / Adjacent side = AC / AB. Cosec θ = 1/Sin θ = Hypotenuse / Side opposite = AC /BC

Answer:

12.8

Step-by-step explanation:

A squared plus B squared equals C squared

Answer:

82

Explanation:

78 respondents aged 18 to 22 use face book and 4 respondents aged 18 to 22 do not use face book. since there are no other options for the survey, the total number of students who were surveyed that are aged 18 to 22 would be 78 + 4 = 82.

i hope this helps! :D

The number of students in the age category of 18 to 22 is 82.

Using the two - way table Given ;

The Number of students in the age category of 18 to 22 include :

(Number of those who use fb + number of those who do not use Fb)

Number who uses Fb = 78

= 78Number who do not use Fb = 4

Hence, The Total number surveyed between age 18 to 22 = (78 + 4) = 82.

Learn more : https://brainly.com/question/23884801?referrer=searchResults

Answer:

21 would be the correct aswer

Step-by-step explanation:

Answer:

Step-by-step explanation:

J(x)=b(x)

3x-2=|x+2|

3x-2=±(x+2)

when 3x-2=x+2

3x-x=2+2

2x=4

x=4/2=2

when 3x-2=-(x+2)

3x-2=-x-2

4x=-2+2=0

x=0

it is rejected as 0-2≠|0+2|

or -2=2

so x=2

Answer:  36k or 36 * k

Step-by-step explanation:

Each ticket costs $36 each and there are k tickets to b purchased.

To find the cost, you need to multiply the cost of one ticket by the total number of tickets which is k:

= 36 * k

That is the relevant equation.

For instance, assume k is 5. The cost of 5 tickets would be:

= 36 * k

= 36 * 5

= $180

Answer:

Step-by-step explanation:

In the multiple you add the power and in the ÷ ye substract the power as in firts one it is 4 power 3+9

Answer:

Step-by-step explanation:

By the Pythagorean Theorem

[tex]52=x^2+16\\ \\ x^2=52-16\\ \\ x^2=36\\ \\ x=\sqrt{36}\\ \\ x=6[/tex]

From the picture we see that the base is 8. The vertical line representing the length of x cuts the base into two equal parts. Knowing this fact allows us to use the Pythagorean Theorem.

(leg)^2 + (leg)^2 = (hypotenuse)^2

(4)^2 + (x)^2 = [sqrt{52}]^2

16 + x^2 = 52

x^2 = 52 - 16

x^2 = 36

sqrt{x^2} = sqrt{36}

x = -6 and x = 6.

We reject x = -6 because length is never negative.

Answer: x = 6

Answer:

3

Step-by-step explanation:

l*h*w=volume

8*h*2=48

16h=48

h=3

Answer: x > -11

Step-by-step explanation:

-5x+9<64

-5x<55

x > -11

The sign flips bc you are diving by a negative number.

Answer:

[tex]x > - 11[/tex]

Step by step explanations:

1) Subtract 9 from both sides.

[tex] - 5x < 64 - 9[/tex]

2) Simplify 64 - 9 to 55.

[tex] - 5x < 55[/tex]

3) Divide both sides by -5.

[tex]x > - \frac{55}{5} [/tex]

4) Simplify 55/5 to 11.

[tex]x > - 11[/tex]

therefor, the answer is x > - 11.

Answer:

D im pretty sure :) hope this helps

Step-by-step explanation:

Answer: x = -(9/4)

Step-by-step explanation:

a+b cannot be simplified any further.

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hope it helps

Answer:

a+b is at its simplest form

it's pretty simple 678910 are greater and -4 -3 -2 -1 are too because they are closer to the whole than 5 is

Answer:

Open circle at 0 arrow to the left

Open circle at 5 arrow to the right

Step-by-step explanation:

numbers that are negative is asking for everything to the left of 0. not inclusive though because 0 is not negative.

Open circle at 0 arrow to the left

Numbers greater than 5 will be to the right of five. Not inclusive because it doesn't ask for numbers equal to 5 too.

Open circle at 5 arrow to the right

Answer:

60 degrees

Step-by-step explanation:

100+120+80+x=360

300+x=360

x=60

Answer: 7458 grams

find 12% of 8,475 which is 8475*0.12=1017

this just subtract that from 8475 which is 7458

Answer:

625 miles in 10 hours

Step-by-step explanation:

hope this helps

Answer:

40%

Step-by-step explanation:

15+10 = 25

25 divided by 5 = 5

100 divided by 5 = 20

10 divided by 5 = 2

2*20 = 40

40% of the mix is raisins

Answer:

Step-by-step explanation:

(x / -5) + 7 ≥ 1