Which equations have no solution?
Select all that apply.
A X + 5 = x - 5
B 0.5y = 0
CX-7 = x - 7
D 9(-1 + x) + 1 = 12x + 1
E 8+ 4. f = 4(3+f)

45 boys, 27 girls

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Explanation:

g = number of girls

g+18 = number of boys, since there are 18 more boys than girls

For example, if g = 7, then g+18 = 7+18 = 25. In this example, we have 7 girls and 25 boys. The problem with this example is the ratio of boys to girls is 25:7 which is not equal to 5:3

We could use trial and error until we land on the solution, or we can use algebra as shown in the next section.

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The ratio of boys to girls is 5:3, meaning

(number of boys)/(number of girls) = 5/3

which turns into

(g+18)/g = 5/3

after we make the proper substitutions

Let's solve for g

(g+18)/g = 5/3

3(g+18) = 5g

3g+54 = 5g

54 = 5g-3g

54 = 2g

2g = 54

g = 54/2

g = 27

There are 27 girls.

This leads to,

g+18 = 27+18 = 45

So there are 45 boys

In total, we have 27+45 = 72 people

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Checking the answer:

The claim is that 45/27 is the same as 5/3

For now assume that claim is true. Set the fractions equal to each other and use cross multiplication like so

45/27 = 5/3

45*3 = 27*5

135 = 135

The third equation has the same thing on both sides, so it's a true equation. This must mean the first equation is true as well. Therefore, 45:27 and 5:3 are the same ratio and the answer is confirmed.

You could also use your calculator to note that

45/27 = 1.667

5/3 = 1.667

both decimal values are approximate.

The people there are in total of 72 students

Let the ratio of boys to girls be 5x: 3x

The ratio of boys to girls in a group is 5:3.

no. of boys = 18 + no. of girls

=> 5x = 18 + 3x

=> 5x - 3x = 18

=> 2x = 18

=> x = 18/2

x= 9

No. of boys = 5x

No. of boys= 5 × 9

No. of boys= 45

No. of girls = 3x

No. of girls= 3 × 9

No. of girls= 27

Total = 45 + 27

Total= 72

Hence, there are 72 students there.

To learn more about the ratio visit:

https://brainly.com/question/2328454

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Answer:

Near the mark at the bottom reading 100 mL

Step-by-step explanation:

We know that 1000 mL = 1 L

It means that 1 liter of a liquid contains 1000 milliliter of the liquid. In other words, in 1 liter there is 1000 mL of the liquid. And milliliter means one thousandth of a liter.  

So when we pour 97 mL of the water in a jar which has a capacity to fill water up to 1 L or 1000 mL, the water filling the jar will come close to the bottom of the jar which is approximately 100 mL .  It will rise up to the mark which reads 100 mL in the jar that is graduated.

Answer:

$9 x 36 = $324,   so choice #2

Step-by-step explanation:

Answer:

$9=1

$x=36

$x=36×9

=324

the second option

Answer:

it is given that. a^2 + b^ 2 = c^2

then we need to find b

then formula will

b= √(c^2 - a^2)

hence 3600 - 1296

=. √{ 1296}

=. 48

Answer:

f(5) = 32

Step-by-step explanation:

To evaluate f(5), substitute x = 5 into f(x), that is

f(5) = 8(5) - 8 = 40 - 8 = 32

Answer:

I think it's 50 i don't know though

Answer:

Step-by-step explanation:

A(x) = 4x³ - 4x²- 23x + 20

B(x) = 2x² + 3x - 4

C(x) = 2x - 5

a). A(x) + B(x) + C(x) = (4x³ - 4x²- 23x + 20) + (2x² + 3x - 4) + (2x - 5)

                                = 4x³ + (-4x² + 2x²) + (-23x + 3x + 2x) + (20 - 4 - 5)

                                = 4x³- 2x²- 18x + 11

b). A(x) - 2B(x) + 2C(x) = (4x³ - 4x²- 23x + 20) - 3(2x² + 3x - 4) + 2(2x - 5)

                                    = 4x³ - 4x² - 23x + 20 - 6x² - 9x + 12 + 4x - 10

                                    = 4x³ - 10x²- 28x + 22

c). A(x) . B(x) = (4x³ - 4x² - 23x + 20)(2x² + 3x - 4)

                    = 2x²(4x³ - 4x² - 23x + 20) + 3x(4x³ - 4x² - 23x + 20) - 4(4x³ - 4x² - 23x + 20)

                    = 8x⁵ - 8x⁴- 46x³ + 40x² + 12x⁴- 12x³ - 69x² + 60x - 16x³+ 16x²+ 92x - 80

                    = 8x⁵+ 4x⁴- 74x³- 13x²+ 152x - 80

d). [B(x)]² = (2x² + 3x - 4)²

               = 2x²(2x² + 3x - 4) + 3x(2x² + 3x - 4) - 4(2x² + 3x - 4)

               = 4x⁴ + 6x³ - 8x² + 6x³ + 9x² - 12x - 8x² - 12x + 16

               = 4x⁴ + 12x³- 7x²- 24x + 16

Answer: 1 19/36

multiply 5/6 by 1 5/6

Answer:

I THINK this is a trick question

(x, y), (7, 9 )

7 <= 5

Most likely NO

Step-by-step explanation:

Answer:

The order of operations IS crucial because it will assist us in performing equations.

Step-by-step explanation:

Answer:

if i didnt get anything mixed up it would be A. dependent

Step-by-step explanation:

When the outcome affects the second outcome, which is what we called dependent events. Dependent events: Two events are dependent when the outcome of the first event influences the outcome of the second event.

Answer:

28.85

Step-by-step explanation:

..... ....

......

Answer:

rounded form: x = 9.56

Step-by-step explanation:

9x + 14 =100

you would 1st subtract 14 from 100 so you're left with

9x = 86

now to get x alone, you divide both sides by 9 so now you have

x = 9.56

Answer:

MP = 11

Step-by-step explanation:

By the Secants and Segments Theorem:

QR x QS = QM x QP

then:

(x + 4) x 4 = (x  -5 + 5) x 5

4x + 16 = 5x

x = 16

MP = (x-5) = 16-5 = 11

Answer:

yes it is true becasue ya so that equals and that is why 5(4 − x) < 3x + 1

Step-by-step explanation:

Answer:

20 minutes....

.... plz mark

Answer:

150ft²

Step-by-step explanation:

Front facing rectangle: lw=6*5=30

Back facing rectangle: lw=6*5=30

Top facing rectangle: lw=2*6=12

Bottom facing triangle: lw=10*6=60

Trapezoid: (h(a+b))/2=(3(2+10))/2=3(12)/2=36/2=18

Total surface area = 30+30+12+60+18=150ft²

Answer: 8

Step-by-step explanation:

h gfdsedrgfh bjbgvfdxesdrftvgbhnbgvfdcsxazsxdcfvgbhfvdcsx

Answer:

Step-by-step explanation:

∠X = 180 - ∠Y = 34°

∠W = ∠X = 34°

∠Z = ∠146°

Answer:

The answer is B: 226 ft

Step-by-step explanation:

Just did the assignment on edg

Answer:

Complementary

Step-by-step explanation:

Complementary angles are angles that add up to 90 degrees, and since there is a 90 degree sign on the angles this is complementary.

Answer:

B, A, C

Step-by-step explanation:

The size of the angle is directly proportional to the length of the side

Answer:

Step-by-step explanation:

Given:

We know that

Solving for cos y°, by substituting values:

Answer:

the answer to your question is d/c

$25.44 is the cost after tax.

Answer:

$25.44 is Sarah's total cost

Step-by-step explanation:

$24×1.06= $25.44

Answer:

Let the Dulcina's collection be 'x'

Let the Tremaine collection be 'x-39'

x + x - 39 =129

2x = 129 +39

2x = 168

x = 168/2

x = 84

Dulcina's collection = x = 84

Tremaine's collection = x - 39 = 84 - 39 = 45

Money paid by Park Jimin = $125

We need to find the tip , so,

→ 15% of the amount paid

→ $ 125 (15/100)

→ $ 18.75

Hence, the tip is of $ 18.75

Answer:

Jiminie paid 18.75

Step-by-step explanation:

Answer:

2490

Step-by-step explanation:

The 2 shapes are triangle and trapezoid

Area of a triangle formula: A= h×b/2

A=40×62/2

A=1240

Area of a trapezoid formula: base¹+base²/2×height

A= 38+62/2×25

A=1250

Add both areas together

1250+1240=2490

Answer:

20%

Step-by-step explanation:

Answer:

20%

Convert fraction (ratio) 16 / 80 Answer: 20%

Answer:

The number that belongs in the green P' = ([?], [ ]) with P' = (7, -8) box is;

7

Step-by-step explanation:

The coordinate of the given point 'P' is P = (3, -5)

The preimage of (x, y) after the translation, [tex]T_{(x, \ y)}[/tex] = (x-coordinate + 4, y-coordinate - 3)

Therefore, the translation, [tex]T_{(x, \ y)}[/tex] = T₍₄, ₋₃₎

Therefore, we have;

Preimage P(3, -5) under the translation T₍₄, ₋₃₎ gives the image P' as follows

P(3, -5) [tex]\overset{T_{\left ( 4, \, -3 \right )}}{\rightarrow}[/tex]P'(3 + 4, -5 - 3) = P'(7, -8)

Therefore, the number that belongs in the green box is the x-coordinate value of the point P'(7, -8) which is seven.

Answer:

racional

Step-by-step explanation:

56 = 56/1 = 112/2

racional