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3 years ago

Please answer correctly !!!!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Naddik [55]3 years ago

8 0

X=7
10x-2=9x+5
X=7
Lol it says I need more characters to submit this

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Solve the equation by graphing the related function.

Triss [41]

Answer:

Your graph is a parabola and needs to open down because the equation is negative. And your vertex is at (0,-4)

5 0

3 years ago

Multiply. Write your answer in simplest form. 2/11x 1/4

klasskru [66]

2/11 x 1/4

2/44

Simplified, it becomes, 1/22

4 0

4 years ago

What is the value of n? 9x27 2×31-28=n

Shtirlitz [24]

n = 9 * 27 + 2 * 31 - 28
n = 243 + 62 - 28
n = 305 - 28
n = 277

Firstly do the multiplications and divisions, then additions and substractions.

Hope I could help :)

4 0

3 years ago

The R-value of insulation is a measure of its ability to resist heat transfer. For fiber-glass insulation, 3½ inches is rated at

Solnce55 [7]

Answer:

$R = \dfrac{16}{5}t + \dfrac{1}{5}$

where R is the R-value and t is the thickness in inches.

Step-by-step explanation:

We are given the following in the question:

The R-value of fiberglass insulation and f its thickness have a linear relation.

Let R be the R-value and t be the thickness. Then, the equation can be written as:

$R = at + b$

where a and b are constants.

When t = 3.5, R = 11

$11 = 3.5a + b$

When t = 6, R = 19

$19 = 6a + b$

Solving the two equation, using the elimination method, we have,

$19-11 = 6a + b-(3.5a + b)\\8 = 2.5a\\\\\Rightarrow a = \dfrac{16}{5}\\\\11 = 6(\dfrac{16}{5}) + b\\\\\Rightarrow b = \dfrac{1}{5}$

Thus, the linear relationship is given by:

$R = \dfrac{16}{5}t + \dfrac{1}{5}$

where R is the R-value and t is the thickness in inches.

8 0

3 years ago

Find the slope for each pair of points (-10,-8), (-12, -7)

tia_tia [17]

$\bf (\stackrel{x_1}{-10}~,~\stackrel{y_1}{-8})\qquad (\stackrel{x_2}{-12}~,~\stackrel{y_2}{-7}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-7}-\stackrel{y1}{(-8)}}}{\underset{run} {\underset{x_2}{-12}-\underset{x_1}{(-10)}}}\implies \cfrac{-7+8}{-12+10}\implies \cfrac{1}{-2}\implies -\cfrac{1}{2}$

5 0

4 years ago