9th grade math please help. A B C or D?

False. Generally, an expression does not contain an equality symbol.  Numbers and/or variables (letters) and operation symbol(s), for example, “x + 10”

Answers:

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Work Shown:

Problem 1

6 cups water: 4 cups flour

(6/2) cups water: (4/2) cups flour

3 cups water: 2 cups flour

3:2 is the ratio of water to flour

In the second step, I divided both parts by the GCF 2 to reduce the ratio.

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Problem 2

(3 cups water)/(2 cups flour) = (x cups water)/(6 cups flour)

3/2 = x/6

3*6 = 2*x ... cross multiply

18 = 2x

2x = 18

x = 18/2

x = 9

You'll need 9 cups of water

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Problem 3

(3 cups water)/(2 cups flour) = (2 cups water)/(y cups flour)

3/2 = 2/y

3y = 2*2

3y = 4

y = 4/3

y = (3+1)/3

y = 3/3 + 1/3

y = 1 + 1/3

y = 1 & 1/3

You'll need 1 & 1/3 cups of flour

This value is a mixed number with the first "1" being the whole part, and the 1/3 being the fractional part.

This is saying you'll need 1 full cup of flour, plus an additional one-third cup of flour to go on top of that.

Answer:

1. (0,-2)

2. (0,8)

3. (0,7)

4. (0 , [tex]\frac{1}{2}[/tex])

5. (0,-3.5)

6. (0,-4)

7. (0,0)

8. (0,-4)

9. (0,5)

10. (0,0)

Step-by-step explanation:

there are 10 boxes in total, slope is y = mx + b

the slope is always the constant.

constant: number without a variable.

y - intercept:

y = mx + b

if there is nothing after the slope it means the y -intercept is 0

The Kid Laroi

Answer:

4x−5y=−40 I think thats the answer

Answer:

Step-by-step explanation:

1.

James goes to an arcade.

He has one go on the Teddy Grabber.

He has one go on the Penny Drop.

The probability that he wins on the Teddy Grabber is 0.2.

The probability that he wins on the Penny Drop is 0.3.

(a) Complete the tree diagram.

Teddy Grabber

Penny Drop

Win

0.3

Win

0.2

Lose

Win

Lose

Lose

(2)

Answer:

C - 6 < = 5.3

Step-by-step explanation:

Writing the above as an equality, we would have ;

Since C is less than 6, then;

C - 6

Therefore, C minus 6 is less than or equal to 5.3 is

C - 6 < = 5.3

An inequality is when an unequal relationship exist between two expressions, which uses signs such as not equal to , less than < , greater than > etc.

Answer:

b) true for one value

Explanation:

If you solve for x, there is only one value of x

Answer:

(b)

Step-by-step explanation:

9(x - 2) = 7x + 5 ← distribute left side

9x - 18 = 7x + 5 ( subtract 7x from both sides )

2x - 18 = 5 ( add 18 to both sides )

2x = 23 ( divide both sides by 2 )

x = [tex]\frac{23}{2}[/tex]

Answer:

A==−x+3y=9

Step 1: Add -3y to both sides.

−x+3y+−3y=9+−3y

−x=−3y+9

Step 2: Divide both sides by -1.

−x

−1

=

−3y+9

−1

x=3y−9

Answer:

x=3y−9

Answer:

£ 7.65

Step-by-step explanation:

Cost of 5 pencils = £ 4.25

Cost of 1 pencil = £ 4.25 / 5 = £ 0.85

Now

Cost of 9 pencils = £ 0.85 * 9 = £ 7.65

Hope it will help :)❤

Step-by-step explanation:

Hey there!

Given;

The cost of 5 pencils is £ 4.25.

Cost of 9 pencils= ?

Now;

~ Finding cost of one pencil.

Cost of 1 pencil= £4.25/5

= £0.85

~ Finding cost of 9 pencils.

Cost of 9 pencils= £9*0.85

= £7.65

Therefore, the Cost of 9 pencils is £7.65.

Hope it helps....

Answer: 3234 cubic units

Step-by-step explanation:

Volume of cylinder: πr²h

The diameter of the cylinder is 14 units so the radius is 7 units.

Now we'll substitute.

π = 22/7

h = 21

πr²h

π × 7² × 21

22/7 × 49 × 21 = 3,234

The volume is 3,234 cubic units.

Answer:

10x + 5

coefficient goes before the x and the constant is a number by itself

Step-by-step explanation:

Answer:500

Step-by-step explanation:

Answer:

g(f(x)) = -x^2 + 4

Step-by-step explanation:

What we simply have to do here is to put f(x) into g(x)

What this mean is that every x in g(x) will be represented by f(x)

Thus, we have it that

-x^2 - 1 + 5

= -x^2 + 4

Answer: B.) 8 Puzzles and 840 pieces

Answer:(8x+24) (2x+1)

Step-by-step explanation:

Answer:d

Step-by-step explanation:

Answer:

$16

Step-by-step explanation:

12-4=8

8 x 2= 16

⭐hello my Friend!

he will have 16 dollars.

just do the math:

[tex]12 - 4 = 8[/tex]

[tex]8 \times 2 = 16[/tex]

⭐have good studies!

☝️follow the rules of brainly!

Answer:

0.15 as a fraction is 3/20

Step-by-step explanation:

Answer: Jerry walked 2 7/20 miles to get to the park

Step-by-step explanation:

1/2 of 3 1/2

1/2 of 7/2 = 7/4

7/4 + 3/5

Find the LCM of the denominator

LCM of 4 and 5 = 20

35/20 + 12/20 = 47/20 = 2 7/20

Jerry walked 2 7/20 miles to get to the park

Answer:

126

Step-by-step explanation:

  70

+ 56

 126

If Ed and Whitney are 70 feet apart, then Candice and Ed are 42 feet apart.

Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.

Given that the Candice is deep-sea diving with two friends

Whitney is exploring a coral reef 56 feet in front of Candice

The distance between Whitney and Candice is 56 feet.

Ed is floating on the surface directly above Candice.

Ed and Whitney are 70 feet apart, we need to find the distance between Ed and candice.

By using Pythagoras theorem we can find this.

70²=56²+x²

4900=3136+x²

Subtract 3136 from both sides

4900-3136=x²

x²=1764

Take square root on both sides

x=42

Hence, If Ed and Whitney are 70 feet apart, then Candice and Ed are 42 feet apart.

To learn more on trigonometry click:

https://brainly.com/question/29002217

#SPJ2

Answer:

B

Step-by-step explanation:

It’s B bc I know!!!

Answer:

[tex]a_{n}[/tex] = [tex]a_{n-1}[/tex] + 3 with a₁ = 14

Step-by-step explanation:

The explicit formula for an arithmetic sequence is

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference, then

[tex]a_{n}[/tex] = 14 + (n - 1)3

has a₁ = 14 and d = 3

A recursive formula allows a term in the sequence to be found by adding d to the previous term, thus recursive formula is

[tex]a_{n}[/tex] = [tex]a_{n-1}[/tex] + 3 , with a₁ = 14

Step-by-step explanation:

y = -3x² + mx + 10

dy/dx = -6x + m.

When dy/dx = 0, -6x + m = 0. => x = m/6.

We have y = -3(m/6)² + m(m/6) + 10 = 37.

=> -m²/12 + m²/6 = 27

=> -m² + 2m² = 324

=> m² = 324

=> m = 18 or m = -18.