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3 years ago

12<2x+2≤22 plz help me tnx

Mathematics

1 answer:

Alja [10]3 years ago

7 0

Firstly, subtract 2 from all sides of this inequality: $10$

Next, divide by 2 on all sides of the inequality and <u>your answer will be $5$ </u>

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Can some one please help me????

Juli2301 [7.4K]

$-\frac{3}{2}w-\frac{7}{8}=\frac{1}{2}|\cdot8\\
-12w-7=4\\
-12w=11\\
w=-\frac{11}{12}
$

5 0

3 years ago

Write and equati9n of a l8ne that passes through (1,-2) and is perpendicular to -4x+7y=21

yarga [219]

Given:

A line passes through (1,-2) and is perpendicular to $-4x+7y=21$ .

To find:

The equation of that line.

Solution:

We have, equation of perpendicular line.

$-4x+7y=21$

Slope of this line is

$m_1=-\dfrac{\text{Coefficient of x}}{\text{Coefficient of y}}$

$m_1=-\dfrac{-4}{7}$

$m_1=\dfrac{4}{7}$

Product of slope of two perpendicular lines is -1.

$m_1\times m_2=-1$

$\dfrac{4}{7}\times m_2=-1$

$m_2=-\dfrac{7}{4}$

Now, slope of required line is $-\dfrac{7}{4}$ and it passes through (1,-2). So, the equation of line is

$y-y_1=m(x-x_1)$

where, m is slope.

$y-(-2)=-\dfrac{7}{4}(x-1)$

$4(y+2)=-7(x-1)$

$4y+8=-7x+7$

$4y+7x=7-8$

$7x+4y=-1$

Therefore, the equation of required line is $7x+4y=-1$ .

7 0

3 years ago

Solve:<br> n/2 - 10=6<br> show your work please

olganol [36]

Answer:

n=36

Step-by-step explanation:

36 divided by 2 is 16 then subtract 10 and you will get 6 hope this helps

4 0

3 years ago

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W-x=z make x the subject of the formula

Makovka662 [10]

Answer:

x=w-z

add x to both sides w=z+x

subtract z from both sides w-z=x

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3 years ago

I have 3 quarter , 1 nickel , 1 dime , and 3 penny . But I want to divided 2 people .

Andru [333]

The answer would be 93 cents divide it by 2 since you want to share with someone and you would have 46 cents and a nickel for both people

7 0

3 years ago

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