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3 years ago

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formula in the form y=mx+b models the value, y, of a new car x years after the initial purchase in 2010. Would you expect m to b

e positive, negative, or zero?

1 answer:

vladimir2022 [97]3 years ago

4 0

Say b, initial price, + 20,000.
y, price after x years = m years + 20,000.
m would be negative because the price would decline after x years.

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The temperature fell from 0 degrees to 15 1/2 degrees below 0 in 5 3/4 hours. Wen tried to find the change in temperature per ho

iren2701 [21]

Answer:

-62/23 degrees per hour

Step-by-step explanation:

Do this by dividing the total change in temperature (-15 1/2 degrees) by the total elapsed time (5 3/4 hrs):

-31/2 degrees -62/4 degrees Note: convert 31/2 to 62/4

--------------------- = ------------------------ = -62/23 degrees per hour

23/4 hrs 23/4 hrs

3 0

3 years ago

Which expression is the additive inverse of 25?

Mamont248 [21]

Answer:it’s actually very simple it’s A.

Step-by-step explanation: anything that is below one is negative that’s how I got my answer.

4 0

3 years ago

Read 2 more answers

(x+3)(x−2)/(x+7)^2 ≥0

LiRa [457]

Answer:

(x+3)(x−2)/(x+7)^2 ≥0 when x ≤ -3 or x ≥ 2.

Step-by-step explanation:

(x+3)(x−2)/(x+7)^2 ≥0

The critical values are (x + 3)(x - 2) = 0.

That is when x = -3 and x = 2.

Set up a table:

x < - 3 x = -3 -3 < x < 2 x = 2 x > 2

x + 3 -ve 0 +ve 0 +ve

x - 2 -Ve -ve -ve 0 +ve

(x+7)^2 +ve +ve +ve +ve +ve

Whole

function + ve 0 - ve 0 +ve

So the function is ≥ 0 when x ≤ -3 and x ≥ 2.

6 0

3 years ago

"A 5-meter ladder is leaning against the wall of a house. The foot of the ladder on the ground is 1.5 meters from the wall. What

VladimirAG [237]

$\large\bold{Together \: We \: Go \: Far! } \\ \rule{70mm}{2.9pt}$

$\large \bold{✞ \: Problem \: ✞}:$

"A 5-meter ladder is leaning against the wall of a house. The foot of the ladder on the ground is 1.5 meters from the wall. What angle measures does the ladder make with the wall?"

$\rule{70mm}{2.9pt}$

$\large \bold{✞ \: Solution \: ✞}:$

✰ Step 1 ✰: Identify what is asked in the problem.

❒ The angle formed by the ladder with the wall.

✰ Step 2 ✰: Use appropriate trigonometric ratio to solve the problem.

$\quad\qquad \large\tt{ \: \: \: \: \: \: Sine \: ratio} \\ \quad \qquad \large \bigstar \: \: \boxed{\tt { \: \: \sin A= \frac{1.5}{5} \: \: }}$

✰ Step 3 ✰: Solution and interpretation.

$: \qquad \large \implies \tt{ \sin A = \frac{1.5}{5} }$

$: \qquad \large \implies \tt{A = \sin^{ - 1} ( \frac{1.5}{5}) }$

$: \qquad \large \implies \tt{A = 17.46 \approx \pmb{17 \degree} }$

$\rule{70mm}{2.9pt}$

$\large \bold{✞ \: Answer \: ✞}:$

❒ The angle formed by the ladder with the wall is approximately 17°.

$\qquad\rule{70mm}{2.9pt}$

$\large \bold{✰ \: MrHarold \: ࿐}$

3 0

2 years ago

The Centers for Disease Control and Prevention (CDC) report that gastroenteritis, or stomach flu, is the most frequently reporte

VLD [36.1K]

b. <u>No, the requirements are not met because the sample has fewer than 10 failures, which violates the condition for approximating a normal distribution.</u>

Step-by-step explanation:

from the question, the number of successes is equal to 30

and it is more than the number of failures

for us to conduct this test such as the z test the data we are using should be a random sample from the population that we are interested in. the population should be at least as big as the sample by 10 times. first of all We need to check if the mean of the sample is normally distributed.

if 26 are successes out of a sample of 30, then failures would be 4. therefore option b is correct.

3 0

4 years ago