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Virty [35]
3 years ago
11

WHAT IS? -5(2x+14) = -2(x +63)

Mathematics
2 answers:
Rus_ich [418]3 years ago
3 0
Pretty sure x=-24.5 did the math. Check my answer before you submit anything
Evgesh-ka [11]3 years ago
3 0
Answer: x = 7

explanation:
-5(2x+14) = -2(x +63)

-10x-70 = -2x-126

56 = 8x

56/8

x = 7
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Select all the expressions that are equivalent to -72/12
kondor19780726 [428]

Answer:

The correct answers are B and C

3 0
2 years ago
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Find the standard form of the equation of the parabola with a focus at (0, -2) and a directrix at y = 2.
anyanavicka [17]
Hello,
The parabola having like focus (0,p/2) and as directrix y=-p/2 has as equation x²=2py

Here -p/2=2==>p=-4

x²=-8y is the equation.
5 0
2 years ago
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Mr.Hall stands 200 meters from the base of the water tower. He finds the angle of elevation to the top of the water to be 27 deg
love history [14]

Height of the tower = 101.9 m

Solution:

Given data:

Angle θ = 27°

Adjacent side = 200 m

Opposite side = Height

Let height be taken as h.

The given image shows it is a right triangle.

Using basic trigonometric ratio formulas,

$\tan \theta=\frac{\text { Opposite side of } \theta}{\text { Adjacent side of } \theta}

$\tan27^\circ =\frac{{ h}}{200}

The value of tan 27° = 0.5095

$0.5095 =\frac{{ h}}{200}

Do cross multiplication, we get

0.5095 × 200 = h

101.9 = h

Height of the tower = 101.9 m

8 0
3 years ago
Which of the following are rational numbers {7,-5,2/3,5.79,,√13,√-4}
Ilia_Sergeevich [38]

Answer:

7, -5, 2/3, 5.79

Step-by-step explanation:

rational numbers are numbers you can put in fraction form. \sqrt{13} is not a perfect square, therefore you cannot put it in fraction form. \sqrt{-4} is an imaginary number. Rational numbers are in the Real Numbers category, so it is not a rational number.

7 0
3 years ago
2x + 11 = 25<br> Solve x <br> I need the working out.
BlackZzzverrR [31]
First to find what’s 2x you do 25-11=14, and you know that 7 x 2 =14.
So x= 7.
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3 years ago
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