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4 years ago

Let

Mathematics

1 answer:

Sergio039 [100]4 years ago

3 0

Answer:

Step-by-step explanation:

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Solve the equation below by factoring:

lyudmila [28]

$\huge\fcolorbox{blue}{aqua}{Answer:}$

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Answer: =A. $x = - 3$ $x = - 4$

Solution:

$x ^ { 2 } +7x=-12$

$x^{2}+7x+12=0$

$a+b=7 ab=12$

$1,12 2,6 3,4$

$1+12=13 2+6=8 3+4=7$

$a=3 b=4$

$\left(x+3\right)\left(x+4\right)$

$x = -3$ , $x = -4$

<h2>so the answer is = A.</h2>

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Explanation:

#Carry on learning

6 0

3 years ago

Read 2 more answers

Hey its not a big question so im giving only 10 but thx for answering guys.. −5.6x=−4

Hatshy [7]

Step-by-step explanation:

−5.6x=−4

x=0.71428571..... blah blah blah blah

4 0

3 years ago

A surveyor wishes to determine the height of a mountain. At a given position he measures the angle of elevation to the top as 43

Usimov [2.4K]

Answer:

4,486.93 ft

Step-by-step explanation:

Let 'h' be the height of the mountain and 'x' be the horizontal distance between the first position measured and the top of the mountain.

Two right triangles can be modeled such that their tangent relationships yield:

$tan(43.66) = \frac{h}{x}\\tan(38.2) = \frac{h}{x+1000}$

Solving the linear system:

$x= \frac{h}{tan(43.66)}\\x = \frac{h}{tan(38.2)} -1000\\\frac{h}{tan(43.66)}=\frac{h}{tan(38.2)} -1000\\1000 = 0.222869*h\\h=4,486.93\ ft$

The mountain is 4,486.93 ft high.

7 0

3 years ago

STEPHANIE OPENED HER BOOK AND FOUND THAT THE PRODUCT OF THE PAGE NUMBER FOR TWO FACING PAGES WAS 3,906. WHAT WERE THE PAGE NUMBE

viktelen [127]

63 and 62.

63*62 = 3906

6 0

3 years ago

Heyyyyyy lol pls help

Zolol [24]

Answer:

Step-by-step explanation:

The whole line is 180 degrees. First, you have to set up an equation. This equation would be 3x+94+x+36+2x-4=180. You can then combine like terms. The equation would now be 6x+126=180. Then subtract 126 from both sides of the equation. This would give you 6x=54. Divide 6x on both sides. The answer is 9.

8 0

3 years ago