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3 years ago

-x -20 = 4x - 5

Mathematics

2 answers:

melomori [17]3 years ago

6 0

Answer:

x=-3

Step-by-step explanation:

-x-20=4x-5

-20=5x-5

-15=5x

x=-3

Arlecino [84]3 years ago

3 0

Answer:-

-3

Step-by-step explanation:

-x - 20 = 4x - 5 -> -20 = 5x - 5 -> -15 = 5x -> x = -3

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The area of a triangle is 41 yd^2, with a base of 5 yards. What is the height, in yards?

Annette [7]

Answer:

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3 years ago

Does the table show a direct proportional relationship? If so, what is the constant of proportionality?

lesantik [10]

Answer:

C. Yes, 3.5.

Step-by-step explanation:

If there is a relationship of direct proportionality for every ordered pair of the table, then the constant of proportionality must the same for every ordered pair. The constant of proportionality ( $k$ ) is described by the following expression:

$k = \frac{y}{x}$ (1)

Where:

$x$ - Input.

$y$ - Output.

If we know that $(x_{1}, y_{1}) = (13, 45.5)$ , $(x_{2}, y_{2}) = (14, 49)$ and $(x_{3}, y_{3}) = (15, 52.5)$ , then the constants of proportionalities of each ordered pair are, respectively:

$k_{1} = \frac{y_{1}}{x_{1}}$

$k_{1} = \frac{45.5}{13}$

$k_{1} = \frac{7}{2}$

$k_{2} = \frac{y_2}{x_2}$

$k_{2} = \frac{49}{14}$

$k_{2} = \frac{7}{2}$

$k_{3} = \frac{y_{3}}{x_{3}}$

$k_{3} = \frac{52.5}{15}$

$k_{3} = \frac{7}{2}$

Since $k_{1} = k_{2} = k_{3}$ , the constant of proportionality is 3.5.

8 0

3 years ago

Umm can someone help me lol

asambeis [7]

Answer:

Answer is C

Step-by-step explanation:

4 0

2 years ago

Simplify -8.6 + 2.3 + 1<br><br> -5.3<br> -7.3<br> -9.9

telo118 [61]

Answer:

Hello, The answer is -5.3

Step-by-step explanation:

Have a great day!

8 0

3 years ago

Read 2 more answers

Which answer is equivalent to 4 1/3*4 1/6?<br> a. 16<br> b .6√16<br> c. 2<br> d. 3√4

Talja [164]

Answer:

Step-by-step explanation:

$4^\frac{1}{3}\cdot4^\frac{1}{6}\\\\\text{use}\ a^n\cdot a^m=a^{n+m}\\\\=4^{\frac{1}{3}+\frac{1}{6}}=4^{\frac{1\cdot2}{3\cdot2}+\frac{1}{6}}=4^{\frac{2}{6}+\frac{1}{6}}=4^\frac{2+1}{6}=4^\frac{3}{6}=4^\frac{3:3}{6:3}=4^{\frac{1}{2}}\\\\\text{use}\ a^\frac{m}{n}=\sqrt[n]{a^m}\\\\=\sqrt[2]{4^1}=\sqrt4=2$

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3 years ago