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3 years ago

Plz help all 3 i'll give brainiest if right.!!!

Mathematics

1 answer:

castortr0y [4]3 years ago

5 0

A) 105 degrees
B) 75 degrees
C) 105 degrees as well

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10 1/8+(3 6/8+2 7/8) what does it equals

Furkat [3]

Answer:

16 3/4

Step-by-step explanation:

Since (3 6/8+2 7/8) is in parenthesis, you have to do this first.

(3 6/8+2 7/8) = 6 5/8

Then you do

10 1/8 + 6 5/8 = 16 6/8

Simplify 6/8 to 3/4

Hope this helps

<> Anna<>

7 0

3 years ago

a nutrition major at wright state was studying the relationship between carbohydrates (x) and calories (y). for example, a servi

VLD [36.1K]

Answer:

The predicted calories would be 403 calories.

Step-by-step explanation:

We have a linear regression model relating y: calories with x: carbohydrates, which has a slope of 4.0 and a y-intercept of 3.0.

Then, the model equation is:

$y=4.0x+3.0$

With these model we can predict the calories values for any amount of carbohydrates, within the interval within which this model is valid.

If a new food is tested, and the number of carbohydrates (x) is 100, the predicted value will be:

$y(100)=4.0(100)+3.0=400+3=403$

The predicted calories would be 403 calories.

6 0

3 years ago

What is an equation of the line that passes through the point (2,−6) and is parallel to the line x−2y=8?

lorasvet [3.4K]

Answer:

y = x/2 - 7

Step-by-step explanation:

First, we need to find the slope of the given equation: x - 2y = 8

Subtract x from both sides

x - 2y = 8

- x - x

-2y = 8 - x

Divide both sides by -2

-2y/-2 = (8 - x)/-2

y = -4 + x/2

The slope of this equation is 1/2

So the equation of our parallel equation is y = x/2 + b

We have to find b, so plug in the given coordinates

-6 = 2/2 + b

-6 = 1 + b

Subtract 1 from both sides

-6 = 1 + b

- 1 - 1

b = -7

Plug it back into the original equation

y = x/2 - 7

6 0

3 years ago

One month Tammy rented 2 movies and 6 video games for a total of $ 42 . The next month she rented 5 movies and 3 video games for

EastWind [94]

Answer:

The rental cost of one movie is $2.25 and the rental cost of one video game is $6.25

Step-by-step explanation:

Let the rental cost of 1 movie be m.

Let the rental cost of 1 video game be v.

One month, Tammy rented 2 movies and 6 video games for a total of $42. This means that:

2m + 6v = 42 ________ (1)

The next month she rented 5 movies and 3 video games for a total of $30. This means that:

5m + 3v = 30 _________(2)

We now have two simultaneous equations:

2m + 6v = 42 ________ (1)

5m + 3v = 30 _________(2)

Multiply (2) by 2, and we have:

2m + 6v = 42 __________ (1)

10m + 6v = 60 _________ (3)

Subtract (1) from (3):

10m + 6v = 60

-<u> 2m + 6v = 42</u>

=> m = 18 / 8

m = $2.25

Put the value of m back in (1):

2(2.25) + 6v = 42

4.5 + 6v = 42

=> 6v = 42 - 4.5 = 37.5

v = 37.5 / 6

v = $6.25

Therefore, the rental cost of one movie is $2.25 and the rental cost of one video game is $6.25

5 0

3 years ago

Write (-3)^4 in standard form

Olenka [21]

Answer: 81

Step-by-step explanation: Because, (-3)^4=-3*-3*-3*-3=-(-81)=81

3 0

3 years ago