solve the system of equations by graphing.
3x + y = -4
x - 2y = -6

Answer:

20

Step-by-step explanation:

A common denominator is a number that is a multiple of both denominators.

To find it just write the multiplication table of the numbers and find a number that appears in both of them.

In this case, we have 4 and 5:

4, 8, 12, 16, 20, 24, 28, 32, 36, 40

5, 10, 15, 20, 25, 30, 35, 40, 45, 50

Since it only asks for a common denominator, it can be 20, 40, 60, 80... Although it's usually smarter to pick the lower number.

[tex]1\dfrac 34 =1+ \dfrac 34 =\dfrac 74 = \dfrac{35}{20}\\\\\\1\dfrac 45 = 1+ \dfrac 45 = \dfrac 95 =\dfrac{36}{20}\\\\\text{The answer is 20}[/tex]

Answer:

x = 8

Step-by-step explanation:

These are corresponding angles, and they are equal to one another.

[tex]7x+3=3x+35\\4x+3=35\\4x=32\\x=8[/tex]

Answer:50

Step-by-step explanation:

Answer:

Decimal = -1.375, Fraction = -11/8

Step-by-step explanation:

Decimal:

-2.25 + 0.4x = -2.8

0.4x = -0.55

x = -1.375

Fraction:

-9/4 + 2/5x = -14/5

-45/20 + 8/20x = -56/20

8/20x = -11/20

x = -11/8

Hopefully this helps!

Brainliest please?

Answer:

19

Step-by-step explanation:

they give you xz, and they want half, so just divide 38 by 2

Answer: go for it!

Step-by-step explanation:

Answer:

The value of x is 1

Step-by-step explanation:

1/2 x - 3/4 = 3/8 - 5/8 x

1/2 x + 5/8x = 3/8 + 3/4

9/8 x = 9/8

x = 1

Answer:

Step-by-step explanation:

Answer:

30 minutes for $10.00

Step-by-step explanation:

30min=$10

60min=$20

90min=$30

210min(3.5 hours)=$30

120min(2hours)=$30

Answer:

Step-by-step explanation:

Start by prime factorising 125.

125 = 5 × 5 × 5

If you check the given options, the correct answer is :-

5³ (3rd option)

Verification:-

5³ = 5 × 5 × 5 = 125

Note :-

The 2nd option also gives 125, but they've asked for the answer in exponential form, so the 3rd option is the correct one.

________

꧁✿ ᴿᴬᴵᴺᴮᴼᵂˢᴬᴸᵀ2222 ✬꧂

Answer:

Step-by-step explanation:

Line s

slope m = Δy / Δx =  (22 - 4) / (4 - (-5)) = 18/9 = 2

y = mx + b

22 = 2(4) + b

b = 14

y = 2x + 14

which can be rearranged to

2x - y = -14

Line t

slope = ( -4 - 14) / (5 - (-4)) = -18/9 = -2

-4 = (-2)(5) + b

b = 6

y = -2x + 6

2x + y = 6

2x − y = −14             2x + y = 6

Answer:

Step-by-step explanation:

Let the lowest integer be x, then:

x + x + 1 + x + 2 + x + 3 = -28.

Answer:

Step-by-step explanation:

1. To figure this out, you need to first convert the percentage to a decimal. To do this, you move the decimal two places back. 75.0% -> 0.75

40 * 0.75 = 30 students are present, because 75% of 40 is 30

40 - 30 = 10 students are absent, because 30 students are present.

2. To figure this out, you must do the same thing you did for number 1 above. It would look like this: 80% -> .80

250 * 0.8 = 200 euros - not sure if that's what it is but that is what I'm going with - is what she spent, because 80% of 250 is 200

250 - 200 = 50 is what she saved.

Answer:

40

Step-by-step explanation:

10% of 300 = 300/10 = 30

50% of 20 = 20/2 = 10

30+10=40

Answer:

i think its c in my opionion not sure tho

Answer:

D. 13/36

Step-by-step explanation:

Answer:

(2,1)

Step-by-step explanation:

Answer 1/614

Step-by-step explanation:

Answer:

corona virus sjuwiwiwoe

Step-by-step explanation:

iaisowowow

Answer:

[tex]\huge\boxed{-\frac{7}{8}a - \frac{1}{6}}[/tex]

Step-by-step explanation:

This question utilizes combining like terms and common denominators. First you have to convert both terms including "a" to have a denominator of 8. You would do this by multiplying both the numerator, and the denominator by the same value. This value in the case of [tex]-\frac{1}{4} a[/tex] would be 2, and in the case of [tex]\frac{2}{3}[/tex] the value would be 2. This would result in the equation: [tex]-\frac{5}{8}a+\frac{4}{6}-\frac{2}{8}a-\frac{5}{6}[/tex]. Then simply combine like terms to get your final answer.

Answer:

-369

Step-by-step explanation:

Replace r with 10.

9(-3(10)-10))

9(-30-11)

9*-30+9*-11

-270+ -99

-369

Hope this helped. :)

Answer:

2. 60

4. 6

5. 3

Step-by-step explanation:

These questions are all asking for the GCF, which is the greatest common factor, or the largest number that can be divided into all of the numbers.

ex. for 2, the question is basically asking for the GCF between 12 and 15

we see that 12 = 3x4, 15 = 3x5, so from here we see that 3 is the GCF.

Answer:

distributive?

Step-by-step explanation:

-5(-9x^2+8)+20=10x^2-15

simplify both sides

45x^2-20=10x^2-15

35x^2=5

x^2=1/7

x=1/sqrt(7)

distributive?

Answer:

Step-by-step explanation:

1) Inequality Form: a < 2.9 Interval Notation: ( 2.9 )

2) graph

same as 3, 4, 5

6) Inequality Form: 2 < y < 5 Interval Notation: ( 2 , 5 )

7)

a) 110+92=202+x=c

b) 110+92=202

202+98=300

Answer:

so using the Pythagorean theorem is simple. what you want o do for this question is to make a graph to visualize it. since the top of the ladder is 7 feet up the house, you would go up 7 points, and its 2 1/2 feet from the house, you would move out 2 1/2 points. The ladders length is the hypotenuse, or the longer side that you get when you connect those two points.

Step-by-step explanation:

Answer:

weel if you divide 82 by 2 then it you will get the number of cats which is 41 then add 82 + 41 =123

Step-by-step explanation:

mark me brainliest