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3 years ago

Is a Unit rate the same thing as a Proportion?

Mathematics

1 answer:

Norma-Jean [14]3 years ago

8 0

The unit rate is also known as the constant of proportionality, but not as a proportion.

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Solve for x PLS HELP NOW

Zepler [3.9K]

Answer:

$x=70$

General Formulas and Concepts:

Pre-Alg

Order of Operations: BPEMDAS
Equality Properties

Step-by-step explanation:

Step 1: Define equation

$\frac{0.35}{\frac{2}{3}x } =\frac{0.45}{x-10}$

Step 2: Solve for x

Cross-multiply: $0.35(x-10)=\frac{2}{3} x \cdot 0.45$
Distribute 0.35: $0.35x - 3.5=\frac{2}{3} x \cdot 0.45$
Multiply: $0.35x - 3.5=0.3x$
Isolate x term: $-3.5=-0.05x$
Isolate x: $70=x$
Rewrite: $x=70$

Step 3: Check

Plug in x to verify it's a solution.

Substitute: $\frac{0.35}{\frac{2}{3}(70) } =\frac{0.45}{70-10}$
Multiply: $\frac{0.35}{\frac{140}{3} } =\frac{0.45}{70-10}$
Subtract: $\frac{0.35}{\frac{140}{3} } =\frac{0.45}{60}$
Evaluate: $0.0075=0.0075$

7 0

3 years ago

Read 2 more answers

In how many different ways can 3 identical green shirts and 3 identical red shirts be distributed among 6 children such that eac

VARVARA [1.3K]

Answer:

Total number of ways will be 20

Step-by-step explanation:

We have given three identical green shirts and three identical red shirts

So total number of shirts = 3+3 = 5

We have to distribute these shirts to 6 children so that each children got one shirt

Number of ways will be equal to $=\frac{6!}{3!3!}=20$ ( Here we divide by 3!3! because three green shirts and 3 red shirts are identical )

5 0

3 years ago

Please help!! I'll give 30 points and brainliest.

Valentin [98]

Step-by-step explanation:

$3 + \frac{9}{4} = \frac{9}{x+4} \\ \\ \therefore \: \frac{3 \times 4 + 9}{4} = \frac{9}{x+4} \\ \\ \therefore \: \frac{12 + 9}{4} = \frac{9}{x+4} \\ \\ \therefore \: \frac{21}{4} = \frac{9}{x+4} \\ \\ \therefore \:21(x + 4) = 36 \\ \\ \therefore \:21x + 84 = 36\\ \\ \therefore \:21x = 36 - 84\\ \\ \therefore \:21x = - 48\\ \\ \therefore \:x = \frac{-48}{21} \\ \\ \therefore \:x = \frac{-16}{7} \\ \\ \huge \red{ \boxed{ \therefore \:x = - 2 \frac{2}{7} }}\\ \\$

8 0

3 years ago

Hurry please I need it tonight thank u so much

Lina20 [59]

It’s the 3rd option!

-5 (the bubble shaded black), the arrow going left towards -9.

Hope this helps!

4 0

2 years ago

AYÚDENME!!!! T.T PORFA

Vitek1552 [10]

Answer:

Por el teorema de 30 grados en un triangulo rectangulo la linea roja es $\sqrt{3}$ veces la longitud del cateto opuesto al angulo de de 30. Por tanto la linea roja será:

$l=\sqrt{3}\times3\sqrt{3}=9$

Luego

$x=9-3=6$

7 0

3 years ago