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3 years ago

I need to know if these rates are equivalent

Mathematics

2 answers:

8090 [49]3 years ago

7 0

No these rate are not equivalent hope this helped

Keith_Richards [23]3 years ago

7 0

They're not. If you wanted an equivalent rate, try 368 over 4

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Explain how you know that x^2-8x+20 is always positive. <br> Please help.

IRISSAK [1]

Answer:

if you rearrange to complete the square, you get (x^2-4)^2 +4

and seeing as anything squared will always be positive or zero, the lowest possible value for (x^2-4)^2 is 0, when x = 4

and 0 + 4 = 4, which is greater than 0, so positive

Step-by-step explanation:

4 0

3 years ago

Y=1/5x+14 when b=7? how do i solve this?

a_sh-v [17]

Answer:

Step-by-step explanation:

Y = 1/5 x + 14 where b = 7

Result:

x + 70 = 5 Y

Geometric figure:

line

Alternate forms:

x = 5 Y - 70

x - 5 Y + 70 = 0

Real solution:

Y = x/5 + 14

Solution:

Y = x/5 + 14

Integer solution:

x = 5 n, Y = n + 14, n element Z

Solution for the variable x:

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3 years ago

What are some<br> things you may<br> see or witness<br> when a chemical<br> reaction happens?

atroni [7]

Answer:

The Odor, Temperature changes, gas bubbles, and color changes.

Step-by-step explanation:

Those are some things you can witness during chemical reactions.

3 0

3 years ago

A 6 ft tall person walks away from a 10 ft lamppost at a constant rate of 3 ft/s. What is the rate (in ft/s) that the tip of the

dedylja [7]

Answer:

12.5 ft/s

Explanation:

Height of person = 6 ft

height of lamp post = 10 ft

According to the question,

dx / dt = 5 ft/s

Let the rate of tip of the shadow moves away is dy/dt.

According to the diagram

10 / y = 6 / (y - x)

10 y - 10 x = 6 y

y = 2.5 x

Differentiate both sides with respect to t.

dy / dt = 2.5 dx / dt

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3 0

3 years ago

50 POINTS!!!

e-lub [12.9K]

10 oz of salmon is needed for 16 servings

20 oz of salmon is needed for 32 servings

50 oz of salmon needed for 80 servings

62.5 oz of salmon needed for 100 servings

<em><u>Solution:</u></em>

Given that,

One roll can be cut into 8 servings

The ingredients for one roll include sushi rice, seaweed sheets, cucumbers, cream cheese, and 5oz of smoked salmon

1 roll is 8 servings and it is made of 5 oz of smoked salmon

Which means that, 5 oz of smoked salmon is needed fo 8 servings

Write an expression for the amount of salmon needed to make s serving of sushi

$Amount\ of\ salmon = \frac{5}{8}s$

Where, s = serving

<h3><u>How much salmon is needed to make ?</u></h3><h3><u>16 servings</u></h3>

$Amount\ of\ salmon = \frac{5}{8} \times 16 = 5 \times 2 = 10$

Thus 10 oz of salmon is needed for 16 servings

<h3><u>32 servings</u></h3>

$Amount\ of\ salmon = \frac{5}{8} \times 32 = 5 \times 4 = 20\ oz$

Thus 20 oz of salmon is needed for 32 servings

<h3><u>80 servings</u></h3>

$Amount\ of\ salmon = \frac{5}{8} \times 80 = 5 \times 10 = 50\ oz$

Thus 50 oz of salmon needed for 80 servings

<h3><u>100 servings</u></h3>

$Amount\ of\ salmon = \frac{5}{8} \times 100 = 5 \times 12.5 = 62.5\ oz$

Thus 62.5 oz of salmon needed for 100 servings

4 0

3 years ago