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3 years ago

Solve equation by using the quadratic formula.

Mathematics

1 answer:

cluponka [151]3 years ago

5 0

Answer:

x=-0.8

Step-by-step explanation:

x+4x=-4

5x=-4

x=-4/5

x=-0.8

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Can I please get help with this question?

Nimfa-mama [501]

Answer:

x =58

Step-by-step explanation:

The angles are complementary which means they add to 90 degrees

32+ x = 90

Subtract 32 from each side

32+x-32 = 90-32

x =58

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4 years ago

Read 2 more answers

1.In a right triangle, <A and <B are acute. Find the value of csc A, when tan A = 8/15.

bekas [8.4K]

Answer:

(1) $csc A=\dfrac{17}{8}$

(2) $sec A=\dfrac{17}{15}$

Step-by-step explanation:

$Tan A=\dfrac{8}{15}\\$In Trigonometry, $Tan A=\dfrac{Opposite}{Adjacent}\\$Therefore:\\Opposite=8, Adjacent=15$

Using Pythagoras theorem

$Hypotenuse^2=Opposite^2+Adjacent^2\\Hypotenuse^2=8^2+15^2\\Hypotenuse^2=289\\Hypotenuse^2=17^2\\Hypotenuse=17$

Question 1

Now, cosecant = 1/sin

Therefore:

$csc A=\dfrac{Hypotenuse}{Opposite}\\csc A=\dfrac{17}{8}$

Question 2

Now, secant = 1/cos

Therefore:

$sec A=\dfrac{Hypotenuse}{Adjacent}\\sec A=\dfrac{17}{15}$

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3 years ago

Read 2 more answers

The endpoints of the directed line segment AB are A(−7, 4) and B(8, 9). Find the coordinates of point P along line segment AB so

bekas [8.4K]

Answer:

(-1,5)

Step-by-step explanation:

When a line segment is divided in the ratio m:n, we use the section formula to determine the point P which divides the line segment:

The coordinates of x and y are:

$(x,y)=\left(\dfrac{mx_2+nx_1}{m+n}, \dfrac{my_2+ny_1}{m+n}\right)$

Given:

$A(x_1,y_1)=(-7, 4)\\B(x_2,y_2)=(8, 9)\\AP:PB=m:n=2:3$

The coordinates of P is:

$(x,y)=\left(\dfrac{2*8+3*-7}{2+3}, \dfrac{2*9+3*4}{2+3}\right)\\=\left(\dfrac{-5}{5}, \dfrac{25}{5}\right)\\\\=(-1,5)$

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3 years ago

Simplify the radical expression.

NNADVOKAT [17]

$\\\dfrac{ \sqrt{6}}{ \sqrt{2n} } \\ \\
 = \dfrac{ \sqrt{3 \times 2}}{ \sqrt{2 \times n} } \\ \\
 = \dfrac{ \sqrt{3} \times \sqrt{2} }{ \sqrt{2} \times \sqrt{n} } \\ \\ = \dfrac{ \sqrt{3} }{ \sqrt{n}} \\ \\ = \sqrt{ \dfrac{3}{n}}$

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3 years ago

For questions 7 – 10, choose the figure that is most likely the next step in the sequence.

lyudmila [28]

Answer:

Step-by-step explanation:

7) First shape has 3 sides; second figure has 4 sides and the third shape has 5 side. In this way, the nest shape should have 6 sides

Answer: B

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3 years ago