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3 years ago

Which expression is the right expression?

Mathematics

1 answer:

Juli2301 [7.4K]3 years ago

5 0

D, you have to factor 3 out of 6x squared

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Let f(x)=x-2 and g(x)=x2-7x-9 fins f(g(-1))

vlabodo [156]

The answer is -3 because you’re plugging g(x) into f(x). For every x there is in f(x), plug in g(x)’s equation. After you get another equation (simplified), which is x^2 -7x -11, plug -1 for every x and condense.

6 0

3 years ago

^^^^^^^^^^^^^^^^^^^^

telo118 [61]

ANSWER

The correct answer is C

EXPLANATION

We want to find the quotient:

$- \frac{10}{19} \div ( - \frac{5}{7} )$

We multiply by the reciprocal of the second fraction:

$- \frac{10}{19} \times ( - \frac{7}{5} )$

We cancel out the common factors to obtain:

$- \frac{2}{19} \times ( - \frac{7}{1} )$

We multiply to get

$\frac{ - 2 \times - 7}{19 \times 1}$

This simplifies to :

$\frac{14}{19}$

The correct answer is C

7 0

3 years ago

Read 2 more answers

XY=4x+7 and YZ=8x-1, Find XY

laiz [17]

Answer:

XZ = 12x + 6

Step-by-step explanation:

XZ = XY + YZ

XZ = <u>4x</u> + 7 + <u>8x</u> - 1

XZ = 12x + 6

5 0

3 years ago

What are the values of the variables in the triangle below?

harkovskaia [24]

Answer:

D) x=9 ; y=3√(3)

Step-by-step explanation:

$Sin(30)=\cfrac{y}{6\sqrt{3} }$

$\cfrac{18y}{6\sqrt{3}}=18\sin \left(30^{\circ \:}\right)$

$\sqrt{3}y=9$

$\cfrac{\sqrt{3}y}{\sqrt{3}}=\cfrac{9}{\sqrt{3}}$

$y=3\sqrt{3}$

$Cos(30)=\cfrac{x}{6\sqrt{3} }$

$\cfrac{18x}{6\sqrt{3}}=18\cos \left(30^{\circ \:}\right)$

$\sqrt{3}x=9\sqrt{3}$

$\cfrac{\sqrt{3}x}{\sqrt{3}}=\cfrac{9\sqrt{3}}{\sqrt{3}}$

$x=9$

Therefore, x=9 and y=3√(3)

8 0

2 years ago

Carla must ice a german chocolate cake. The diameter of the cake is 6 cm. Use the formula A = 3.14 x r2 to find the area of the

blsea [12.9K]

Diameter = 6 6/2 = 3
Radius = 3 3 to the power of 2 = 9
A = (3.14)(9) = 28.26

6 0

3 years ago

Read 2 more answers