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bearhunter [10]
2 years ago
7

Simplify the expression below. 9x + 10 - 2x + 1

Mathematics
2 answers:
yaroslaw [1]2 years ago
7 0

Answer:

Step-by-step explanation: 9x + 10 - 2x +1=

9x + (-2x) +10+1 =

7x + 11

Leokris [45]2 years ago
6 0

Answer:

7x+11

Step-by-step explanation:

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Simplify the expression: 3(4d + 1) <br>​
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Answer:

12d+3

Step-by-step explanation: multiply 3x4d and 3x1 and you get 12d+3

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4x-3y=2<br> 3x=5y=16<br> solve using substitution method
vodomira [7]

\left\{\begin{array}{ccc}4x-3y=2&|\text{add 3y to both sides}\\3x+5y=16\end{array}\right\\\left\{\begin{array}{ccc}4x=3y+2&|\text{divide both sides by 4}\\3x+5y=16\end{array}\right\\\left\{\begin{array}{ccc}x=0.75y+0.5&(*)\\3x+5y=16\end{array}\right\\\\\text{substitute}\ (*)\ \text{to the second equation}\\\\3(0.75y+0.5)+5y=16\qquad\text{use distributive property}\\\\(3)(0.75x)+(3)(0.5)+5y=16\\\\2.25y+1.5+5y=16\qquad\text{subtract 1.5 from both sides}\\\\7.25y=14.5\qquad\text{divide both sides by 7.25}

\boxed{y=2}\\\\\text{substitute the value of y to}\ (*):\\\\x=0.75(2)+0.5\\\\x=1.5+0.5\\\\\boxed{x=2}\\\\Answer:\ x=2\ and\ y=2\to(2,\ 2)

7 0
2 years ago
The lateral surface area of a cylinder is given by the formula S=2 \pirh. Solve the equation for r.
Nastasia [14]
S = 2 * (pi) * r * h.....for r
divide both sides by 2 * pi * h
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8 0
2 years ago
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What is 1 and five eights plus 2 and threee sixteenths plus 7 and one half?
Helen [10]

Answer:

11 and 5/16

Hope this answers your question

8 0
2 years ago
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laws of Sines with find the angle. Find each measurement indicated. Round your answers to the nearest tenth. Show your work plea
Gwar [14]

Answer:

4. Z ≈ 46.1°

5. T ≈ 45.2°

6. F ≈ 15.0°

Step-by-step explanation:

4.

We need to use the Law of Sines, which states that for a triangle with legnths a, b, and c and angles A, B, and C:

\frac{a}{sinA} =\frac{b}{sinB} =\frac{c}{sinC}

Here, we can say that ZY = a = 30, X = A = 110, XY = b = 23, and Z = B. Plug these in to find Z:

\frac{a}{sinA} =\frac{b}{sinB}

\frac{30}{sin(110)} =\frac{23}{sinZ}

Solve for Z:

Z ≈ 46.1°

5.

Use the Law of Sines as above.

\frac{a}{sinA} =\frac{b}{sinB}

\frac{26}{sin(76)} =\frac{19}{sinT}

Solve for T:

T ≈ 45.2°

6.

Again, use the Law of Sines as before.

\frac{a}{sinA} =\frac{b}{sinB}

\frac{29}{sin(137)} =\frac{11}{sinF}

Solve for F:

F ≈ 15.0°

6 0
3 years ago
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