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kramer
3 years ago
12

Guys help me to solve these questions please​

Mathematics
2 answers:
Monica [59]3 years ago
3 0
Here’s the solution for the first one.
cestrela7 [59]3 years ago
3 0

Answer:

Step-by-step explanation:

The first one I would factor the difference of cubes on top and then cancel a common factor this would end up giving you sin^2(A/2)+sin(A/2)cos(A/2)+cos^2(A/2)

(the 1st+3rd term here actually equals 1)

now you have

1+sin(A/2)cos(A/2)

1+1/2*2sin(A/2)cos(A/2)    (this step was just to help show how I'm going to use the next identity)

1+1/2sin(A)                    (double angle identity for sine)

hint for the next one: I would multiply top and bottom by bottom's conjugate first

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The perimeter of a rectangle is given by the formula P = 2(l + w), what is the value of P if l = 2 cm and w = 1/2 cm?
Sonja [21]

Answer:

\large\boxed{C)\ 5cm}

Step-by-step explanation:

P=2(l+w)\\\\\text{Put}\ l=2cm\ \text{and}\ w=\dfrac{1}{2}cm\ \text{to the formula of the perimeter:}\\\\P=2\left(2+\dfrac{1}{2}\right)=(2)(2)+(2)\left(\dfrac{1}{2}\right)=4+1=5\ cm

8 0
3 years ago
Victor has saved $89.25 for the bicycle that he wants. The bicycle costs $129.85. Victor
fenix001 [56]

Answer: No, the equation is not correct

Step-by-step explanation:

Victor has saved $89.25 for a bicycle that costs $129.85. To get the remaining amount that is needed to complete the bicycle, we subtract the amount saved by Victor from the total amount. This will be:

= $129.85 - $89.25

= $40.6

The amount remaining is $40.6

The equation written by Victor is

= $89.25 + $129.85

= $219.1

The equation written by Victor is not correct. The correct equation is:

= $129.85 - $89.25 = $40.6

4 0
4 years ago
Write a point slope form equation and slope intercept equation. Passes through (-1,-6), slope= -4
zavuch27 [327]

Answer:

The point-slope form would be y + 6 = -4(x + 1) and the slope-intercept form would be y = -4x - 10

Step-by-step explanation:

In order to find the point-slope form, you simply need to put the point and the slope into the base form.

y - y1 = m(x - x1)

y - -6 = -4(x - -1)

y + 6 = -4(x + 1)

Now to find the slope-intercept, simply solve for y.

y + 6 = -4(x + 1)

y + 6 = -4x - 4

y = -4x - 10

3 0
3 years ago
Consider the isosceles triangle with verticles a(-1,1) b(3,1) c(1,6)
Dima020 [189]
What is the question? Do they want us to find a’,b’, and c’??
8 0
4 years ago
Find the intercepts to graph the line.<br> x + 3y = -6
qwelly [4]

Answer:

X-Intercepts (-6,0) Y-intercepts(0,-2)

Step-by-step explanation:

hope this helps, please mark brainliest

5 0
3 years ago
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