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3 years ago

PLEASE HELP!! i hate math and i am terrible at it so i need help

Mathematics

2 answers:

aliina [53]3 years ago

8 0

Answer:

b,c,d

Step-by-step explanation:

kherson [118]3 years ago

3 0

Answer:

D and B i'm pretty sure

Step-by-step explanation:

i would try a place called calculator soup really helps.

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How long must a ladder be to reach the top of a 12-foot wall if the bottom of the ladder is placed 3 feet from the base of the w

laila [671]

Answer:Q: What is the unknown information that could be found using the Pythagorean theorem?

A: The hypotenuse, or the length of the ladder.

Q: what is the approximate length of the ladder needed, rounding to the nearest hundredth?

A: 12.37 ft.

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3 years ago

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70° x 82° r r 6 - - 4)º an 160° (2y - 40 HELP ASAP

natulia [17]

Answer:

Step-by-step explanation:

x + 70 = 180 {Linear pair}

x = 180 - 70

x = 110

y + 82 = 180 {linear pair}

y = 180 -82

y = 98

x - 4 = 110 - 4 = 106

2y - 40 = 2*98 - 40

= 196 - 40

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2 years ago

Find the slope-intercept form of the equation of the line that passes through the point (5,1) and is perpendicular to the line 2

Vlad1618 [11]

The slope-intercept form:

$y=mx+b$

m - slope

b - y-intercept

Convert 2x + 5y = 10 to the slope0intercept form:

$2x+5y=10$ subtract 2x from both sides

$5y=-2x+10$ divide both sides by 5

$y=-\dfrac{2}{5}x+2$

Let $k:y=m_1x+b_1$ and $l:y=m_2x+b_2$

$l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}$

We have $m_1=-\dfrac{2}{5}$

Therefore

$m_2=-\dfrac{-\frac{2}{5}}=\dfac{5}{2}$

We have the equation of a line:

$y=\dfrac{5}{2}x+b$

Put the coordinates of the point (5, 1) to the equation of a line:

$1=\dfrac{5}{2}(5)+b$

$1=\dfrac{25}{2}+b$ subtract $\dfrac{25}{2}$ from both sides

$-\dfrac{23}{2}=b\to b=\dfrac{23}{2}$

Answer: $\boxed{y=\dfrac{5}{2}x+\dfrac{23}{2}}$

4 0

3 years ago

How many solutions does this system have?

gtnhenbr [62]

Answer:

There will be an infinite number of solutions.

Step-by-step explanation:

From the given system of equations, we have to find the solution.

The equations are

$y = \frac{3}{4}x - 5$ ........... (1) and

- 3x + 4y = - 20 .......... (2)

Now, simplifying the equation (1) we get

4y = 3x - 20

⇒ - 3x + 4y = - 20

which is nothing but the equation (2).

Therefore, the system of equations (1) and (2) are the same straight line.

Hence, there will be an infinite number of solutions. (Answer)

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3 years ago

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6n+9=3(6n-2)+2-12n what is the solution set?

Grace [21]

Answer:

No solution

Step-by-step explanation:

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3 years ago

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