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qaws [65]
3 years ago
10

Ms. Nellies has 2 pints of vinegar for her students to use in a science experiment. Each

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
6 0

Answer:

incorrect; 2½ ÷ ¾ = 3⅓; 2½ ÷ ⅜ = 6⅔; six

Step-by-step explanation:

Assume that Trey's number line model is like the first one below.

That model is incorrect.

The distance from 0 to 1 has four tick marks, so each mark represents the fraction ¼.

Trey is jumping three of them (¾) at a time.

Trey's number line represents the expression

2½ ÷ ¾ = 3⅓

The correct number line model is the second one below.

It represents the expression

2½ ÷ ⅜ = 6⅔

Ms. Nellies has enough vinegar for six groups of students

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In ΔVWX, \text{m}\angle V = (4x+3)^{\circ}m∠V=(4x+3) ∘ , \text{m}\angle W = (x+7)^{\circ}m∠W=(x+7) ∘ , and \text{m}\angle X = (5
NemiM [27]

Answer:

The value of x is 17

Step-by-step explanation:

The sum of the angles in a triangles is 180°

From the question:

In ΔVWX,

m∠V=(4x+3) ∘

m∠W=(x+7) ∘

m∠X=(5x+0) ∘ .

Hence:

m∠V + m∠W + m∠V = 180°

4x + 3 + x + 7 + 5x + 0 = 180°

Collect like terms

4x + x + 5x + 3 + 7 + 0 = 180°

10x + 10 = 180°

Subtract 10 from both sides

10x + 10 - 10 = 180° - 10

10x = 170

Divide both sides by 10

10x/10 = 170/10

x = 17

The value of x is 17

4 0
3 years ago
(1+i)^2(x+yi)=4+5i<br> Solve for x and y
faust18 [17]

Answer:

x = 5/2

y = -2

Step-by-step explanation:

(1+i)² (x+yi) = 4+5i

(1+2i+i²)(x+yi) = 4+5i

(1+2i-1)(x+yi) = 4+5i

2i(x+yi) = 4+5i

2i²y + 2xi = 4+5i

-2y + 2xi = 4 + 5i

By comparing both sides,

-2y = 4

y = -2,

2x = 5

x = 5/2

7 0
2 years ago
Simplify 5+6(7-3)45•9
Olin [163]

Answer:

9725

Step-by-step explanation:

5+6(4)*45*9

5+6(4)*405

5+24*405

9725

5 0
3 years ago
I need help with this math question 3f+9&lt;21
liubo4ka [24]
I am assuming you want to find the simplest form of the inequality.

1. 3f + 9 \ \textless \  21
2. 3f < 12
3. f < 4

1. Start
2. Subtract 9 from each side
3. Divide both sides by 3
8 0
3 years ago
-4.3 + x equals 0 selected place on the number line to positive value of x​
Zanzabum

Answer:

x is equal to 4.3

Step-by-step explanation:

since it's -4.3 + x is equal to 0

you take -4.3 to the other side of the equal sign which makes it positive and x is equal to 4.3

6 0
3 years ago
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