"-2=2" what does this mean

Answer:

1. y=5 and x=-5

2. y=2 and x=-4

Step-by-step explanation:

1.y=-5x-19

y=-6x-24

since both equations are equal to y, they are also equal to eachother

-5x-19=-6x-24

addition P.O.E.

x-19=-24

addition P.O.E.

x=-5

substitute x into one equation

y=-5*-5-19

y=6

2. y=-6x-22

y=-3x-10

since both equations are equal to y, they are also equal to eachother

-6x-22=-3x-10

addition P.O.E.

-22=3x-10

addition P.O.E.

-12=3x

division P.O.E.

-4=x

substitute x into one equation

y=-3*-4-10

y=2

Answer:

C

Step-by-step explanation:

The question states he wants to show the relationship between the trees ages and the number of apples they produce.

Answer:

-24

Step-by-step explanation:

i dont think this is right answer

hope this helps via substitution process

Answer:

C 37.5%

Step-by-step explanation:

There are 3 planets closer to the sun than mars

3/8 = .375

Changing to a percent

37.5% are closer to the sun than mars

Answer:

D.25

Step-by-step explanation:

Answer:

-10, square root of 100, square rout of 220, 11.5

Step-by-step explanation:

Answer:

Step-by-step explanation:

In a pen there are 200 animals,

25 of which are ducks,

Number of turkeys

50% are turkeys

= 50% × 200

= 100 turkeys

and

Numbers of chickens

75% are chickens.

= 75% × 200

= 150

How many animals are ducks, turkeys and chickens?

Answer:

B. 13

Step-by-step explanation:

Let's solve your equation step-by-step.

7√x−4−6=15

Step 1: Add 6 to both sides.

7√x−4−6+6=15+6

7√x−4=21

Step 2: Divide both sides by 7.

7√x−4

7

=

21

7

√x−4=3

Step 3: Solve Square Root.

√x−4=3

x−4=32(Square both sides)

x−4=9

x−4+4=9+4(Add 4 to both sides)

x=13

Answer:

x = 13

Step-by-step explanation:

[tex]7 \sqrt{x - 4} = 15 + 6 \\ 7 \sqrt{x - 4} = 21 \\ \sqrt{x - 4 =} = 3 \\ x - 4 = 9 \\ x = 13[/tex]

C. 9 square roots of 2

To answer this question, it's super important that you understand the ratio of sides for special triangles. This triangle in particular, a 45-45-90 triangle, has a ratio between the legs and hypotenuse of 1:1:

Since we are given the value of the hypotenuse, we know that the value of the two sides multiplied by [tex]\sqrt{2}[/tex] will be 18. Knowing this, we can write out an equation:

u*[tex]\sqrt{2}[/tex] = 18

u = [tex]\frac{18}{\sqrt{2} }[/tex]

Multiply both sides by [tex]\sqrt{2}[/tex] in order to get rid of the root in the denominator:

u = [tex]\frac{18*\sqrt{2}}{\sqrt{2} * \sqrt{2}}[/tex]

u = [tex]\frac{18*\sqrt{2} }{2}[/tex]

u = 9[tex]\sqrt{2}[/tex]

If you'd like me to explain how I got to the answer any further, just ask!

- breezyツ

Answer:

40.35

Step-by-step explanation:

to find the amount without tax:

97 x .6 (60%) = 58.2 (the amount that will be taken off)

so 97 - 58.2 = 38.8 (the amount the pole will be WITHOUT tax)

to find the tax:

38.8 (sale price) x .04 (4 percent) = 1.552, rounded 1.55

to find full price:

38.8 (sale price) + 1.552 or 1.55 (tax) = 45.352 or 40.35

Answer:

100:60:80

Step-by-step explanation:

240÷12=20

20×5=100

20×3=60

20×4=80

Answer:

100: 60: 80

Step-by-step explanation:

5/(5+3+4) *240= 100

3/(5+3+4)* 240= 60

4/(5+3+4)* 240= 80

Answer:

there is no picture of what i need to solve

Step-by-step explanation:

Answer: 7w + 5h < 40

Step-by-step explanation:

7w + 5h < 40

Answer:

The equation is

2.7x - 5.4

Step-by-step explanation:

Gas is priced at $2.70 per gallon. My gas tank has 2 gallons currently in the tank. Write an equation to how much

the money I will spend to fill up my tank.

Let the total gallons that would fill your tank = x

The tank currently has 2 gallons

A gallon =>$2.70

Therefore, our equation is

=(x - 2) × 2.70

= 2.7x - 5.4

Answer:

X= -1

Step-by-step explanation:

Answer:

x = -1 or D

Step-by-step explanation:

hope this helps

Answer:

86.6666666667

Step-by-step explanation:

Because one of Tom's car wheel weighs 21 2/3 pounds, you would have to multiply 21 2/3 pounds by 4 to get the amount of pounds that all the tires weigh; which makes the answer:86.6666666667

Answer:

86 2/3

Step-by-step explanation:

you multiply 21 × 4 and get 84

multiply 2 × 4 and get 8

Divide 8/3 and get 2 2/3

add 2 to 84

and leave the 2/3

Answer:

32

Step-by-step explanation:

Let the number of girls in the class be 3. Then the number of girls who study German is , as is

the number of boys who study German. So the number of girls who study French is 2 and the

number of boys who study French is 2 × 2 = 4.

Therefore the total number of boys and girls in the class is + + 2 + 4 = 8 and hence is a

multiple of 8. Of the options, only 32 is divisible by 8.

Answer:

the answer is 36centameters

Answer:

Step-by-step explanation:

Total members in the choir = 24 + 36 = 60

a) Percentage of men = [tex]\frac{24}{60}*100[/tex]

                                 = 4 * 10  = 40%

b) Percentage of women = 60%

c) Number of men =24 + 10 = 34 men

Number of women = 36 + 10 = 46

Total = 34 + 46 = 80

Percentage of men = [tex]\frac{34}{80}*100= 42.5[/tex]%

Percentage of women = (100 - 42.5)% = 57.5%

Answer:

a]

% of men = 24/60 × 100

% of men = 4/10 × 100

% of men = 4 × 10

% of men = 40%

b]

% of women = 36/60 × 100

% of women = 6/10 × 100

% of women = 6 × 10

% of women = 60%

c]

Men = 24 + 10 = 34

Women = 36 + 10 = 46

Total = 34 + 46 = 80

% of men = 34/80 × 100 = 42.5

% of women = (100 - 42.5) = 57.5 %

[tex] \\ [/tex]

Answer:

b

Step-by-step explanation:

Answer:

Step-by-step explanation:

(h + 6) - 2    Here we find the sum of h and 6, and from that sum we subtract 2.

This simplifies to h + 4.

Answer:

h+4

Step-by-step explanation:

h+6-2=h+4

Answer:

70.06

Mean score = 70

Step-by-step explanation:

16% of students scored higher than 80 on a recent normally distributed exam the standard deviation is 10 what is the mean

For a normal distribution :

Zscore = (x - mean) / standard deviation

x = score

P(Z > 80) = 16% = 0.16 ; corresponding Zscore = 0.994 (Z probability calculator)

Therefore ;

0.994 = (80 - mean) / 10

0.994 * 10 = 80 - mean

9.94 = 80 - mean

Mean = 80 - 9.94

Mean = 70.06

Hence, the mean score = 70.06 = 70

Answer:

st=22

m<r=68

m<t=22

Step-by-step explanation:

Side rt = 24

Side sr = 9

Side st = 22.2486

Angle ∠s = 90° = 1.5708 rad = π/2

Angle ∠t = 22.024° = 22°1'28" = 0.3844 rad

Angle ∠r = 67.976° = 67°58'32" = 1.1864 rad

Answer:

Base = 18 inches

Height = 54 inches

Step-by-step explanation:

The height of a parallelogram is three times its base. If the area is 972 square inches, what is the base and height?

The area of a parallelogram is given as:

Base × Height

Height = h = 3b

Area = 972 square inches

We substitute

972 = b × 3b

972 = 3b²

Divide both sides by 3.

b² = 972/3

b² = 324

b = √324

b = 18 inches

Solving for h

h = 3b

h = 3 × 18

h = 54 inches

Therefore,

Base = 18 inches

Height = 54 inches

Answer:

x = 66

Step-by-step explanation:

All triangle angles add up to 180 so:

x + 79 + 35 = 180

x + 114 = 180

x = 180 - 114

x = 66

Answer:

66°

Step-by-step explanation:

Since the sum off all the angles of a triangle is 180°,

x + 79° + 35° = 180°

x + 114° = 180°

x = 180° - 114° = 66°

Therefore, x = 66°

Answer:

the product of 32.56 and 1.4 = 45.584

Step-by-step explanation:

When you multiply decimals, the decimal point is placed in the product so that the number of decimal places in the product is the sum of the decimal places in the factors.

hope i helped:)

Answer:

Your answer would be 32.56

Step-by-step explanation:

We know that when you multiply decimals the number decimals placed is the product or sum of the decimals placed in there own factors.

my dad helped with this hope it helps you

Answer:

I think it's 12 my bad if it's wrong