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Alla [95]
3 years ago
13

PLEASE HELP! BRAINIEST WILL BE MARK IF RIGHT!

Mathematics
2 answers:
DerKrebs [107]3 years ago
8 0

Answer:

X int : 5

Y int : 15

Step-by-step explanation:

y=15

-

3x=15

3/3 15/3

x=5

dem82 [27]3 years ago
4 0

Answer:

y-intercept=15 and x-intercept = 5

Step-by-step explanation:

We have the following equation:

3x + y = 15.

To find the x-intercept and y-intercept we have to do the following:

1. To find the y-intercept we need to make x=0, and solve for 'y' as follows:

3x + y = 15 ⇒ 3(0) + y = 15 ⇒ y=15

2. To find the x-intercept we need to make y=0, and solve for 'x' as follows:

3x + y = 15 ⇒ 3x + (0) = 15 ⇒ 3x = 15  ⇒ x=5

Therefore, the y-intercept=15 and x-intercept = 5

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Please solve the problem.
Deffense [45]
OK.  I did it, and I have the solution.
_____________________________________

The length of the deck is  (5 + 2x) .
The width of the deck is   (4 + 2x) .

If the deck didn't have that big hole in the middle where the pool is,
then its area would be

                 (5 + 2x) · (4 + 2x) .

When you multiply that all out, you get    Area = 4x² + 18x + 20

and the question tells us that the area of the whole big rectangle is 90 yds² .
So we can write

                                             4x² + 18x + 20  =  90 .

Subtract 90 from each side:    4x² + 18x - 70  =  0
Divide each side by 2 :           2x² + 9x - 35  =  0

You can use the quadratic equation to solve that and find out that
x = 2.5 yards, and that's what the question is asking you.
___________________________________________________

That makes the deck  10 yds high and 9 yds wide.

Total area of the whole big rectangle, (deck + pool ),  =  90 yds².
 
3 0
3 years ago
The distance, d, measured in miles, that Hye drove is d = 45. 2t, where t is the time in hours. What is the constant of proporti
raketka [301]

The constant of proportionality is the relationship between variables that are directly proportional

The constant of proportionality of \mathbf{d = 45.2t} is 45.2

The distance measured in miles is given as:

\mathbf{d = 45.2t}

An equation that has a constant proportion is represented as:

\mathbf{y=kx}

Rewrite the equation in terms of d and t.

So, we have:

\mathbf{d=kt}

Where, k represents the proportionality constant.

By comparison:

\mathbf{k = 45.2}

Hence, the constant of proportionality is 45.2

Read more about constant of proportionality at:

brainly.com/question/1835116

3 0
2 years ago
What is the sum of the first 7 terms of the geometric series:<br><br> -8 + (-4) + (-2) + 1 + 1/2+...
s2008m [1.1K]
a_1=-8;\ a_2=-4;\ r=a_2:a_1\to r=-4:(-8)=\dfrac{1}{2};\ n=7\\\\S_n=\dfrac{a_1(1-r^n)}{1-r}\\\\subtitute:\\\\S_7=\dfrac{-8\left[1-\left(\dfrac{1}{2}\right)^7\right]}{1-\dfrac{1}{2}}=\dfrac{-8\left(1-\dfrac{1}{128}\right)}{\dfrac{1}{2}}\\\\=\dfrac{-8\cdot\dfrac{127}{128}}{\dfrac{1}{2}}=-\dfrac{127}{16}\cdot\dfrac{2}{1}=-\dfrac{127}{8}=-15\dfrac{7}{8}
4 0
4 years ago
Four friends order sandwiches for $15, a bottle of juice for $4 and a box of cookies for $3. The friends want to evenly split th
Gelneren [198K]

First, let’s figure out the total amount of money

$15 + $4 + $3 = $22

Okay, so now we know the total amount of money spent, so we can divide

22 ÷ 4 = 5.5

5.5 = $5.50

Here are the expressions:

(15 + 4 + 3) ÷ 22 = 5.5

22 ÷ 4 = 5.5 (or 5.50)

Therefore, each friend owes $5.50

Hope this helps you

-AaronWiseIsBae

Brainliest would be appreciated

5 0
3 years ago
What are the coordinates of the image of the point (4,5) after reflecting over the y-axis
NemiM [27]

here is a link to the aneser hope it helps

Download pdf
4 0
3 years ago
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