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2 years ago

Add. ˉ8 + ˉ6 = ____

Mathematics

2 answers:

8_murik_8 [283]2 years ago

6 0

The answer is A. If you add a positive with a negative, it becomes a negative.

Nutka1998 [239]2 years ago

3 0

The answer is D +14 because to negatives make a positive

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It takes for three gardeners 90 minutes to weed a garden. If the job is to be done in only 15 minutes, how many more gardeners n

andrezito [222]

3 gardeners :90 minutes
? Gardeners : 15 minutes
1 gardener : 270 minutes
? Gardeners : 270/15
18 gardeners

6 0

2 years ago

Read 2 more answers

The position of an open-water swimmer is shown in the graph. The shortest route to the shoreline is one that is perpendicular to

Elenna [48]

Answer:

$y = -\frac{4}{3}x + 9$

Step-by-sep explanation:

To create an equation that represents the shortest oath of the swimmer that is perpendicular to the shoreline, we need to find the slope, m, and the y-intercept, b.

The slope of the path would be the negative reciprocal of the slope of the shoreline, since they are perpendicular.

Let's find the slope of the shoreline.

Using two points on the shoreline, (0, 1) and (4, 4),

Slope (m) = $\frac{y_2 - y_1}{x_2 - x_1} = \frac{4 - 1}{4 - 0} = \frac{3}{4}$

Therefore the slope, m, of the swimmer's path that is perpendicular to the shoreline would be -⁴/3.

Use the point of the swimmer and the slope of the path to find b.

Substitute m = -⁴/3, (x, y) = (6, 1) in $y = mx + b$

$1 = (-\frac{4}{3})(6) + b$

$1 = -8 + b$

Add 8 to both sides

$1 + 8 = b$

$9 = b$

$b = 9$

Now that we know the slope, m = -⁴/3, and the y-intercept, b = 9, plug in their values into $y = mx + b$ .

The equation of the path would be:

$y = -\frac{4}{3}x + 9$

5 0

2 years ago

In a health club, research shows that on average, patrons spend an average of 42.5 minutes on the treadmill, with a standard dev

Paha777 [63]

Answer:

0.3114

Option d is right

Step-by-step explanation:

Let X be the time spent on a treadmill in the health club

Given that research shows that on average, patrons spend an average of 42.5 minutes on the treadmill, with a standard deviation of 5.4 minutes

Also given that X is normal

the probability that randomly selected individual would spent between 30 and 40 minutes on the treadmill.

$= P(30$

round off to two decimals tog et

the probability that randomly selected individual would spent between 30 and 40 minutes on the treadmill is 0.31

Hence option d is right

3 0

2 years ago

A home improvement store sold wind chimes for $30 each. A customer signed up for a free membership card and received a 5% discou

dsp73

the final price of the wind chime is $29.925 .

<u>Step-by-step explanation:</u>

Here we have , A home improvement store sold wind chimes for $30 each. A customer signed up for a free membership card and received a 5% discount off the price. Sales tax of 5% was applied after the discount. We need to find What was the final price of the wind chime . Let's find out:

Initially we have , 5% discount in $30 i.e.

⇒ (30(5))/100

⇒ (150)/100

⇒ $1.5 , So now price becomes $30 - $1.5 = $28.5 . At this amount there's 5% tax i.e.

⇒ (28.5(5))/100

⇒ (142.5)/100

⇒ $1.425

So now price becomes $28.5 + $1.425 = $29.925 . Therefore , the final price of the wind chime is $29.925 .

3 0

2 years ago

Thomas is saving money for a new mountain bike. The amount (a) Thomas needs to save is more than $50.45. Which inequality models

AfilCa [17]

C.

This is because the amount is more than what he needs to save, considering that he is probably has some money in his bank already.

3 0

2 years ago