42 is 7/10 of what number

Mathematics

1 answer:

Ivanshal [37]3 years ago

7 0

I think it is 60, but make sure.

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6th grade math help me plz

den301095 [7]

It’s 64! Hope this helps!!!!

7 0

3 years ago

Please help me with this question!! I also need the steps

e-lub [12.9K]

Hi there!

$\large\boxed{x = \frac{\pi}{3} \text{ and } \pi}$

We are given:

cos(7x)cos(4x) = -1 - sin(7x)sin(4x)

Begin by moving all terms with variables to one side:

cos(7x)cos(4x) + sin(7x)sin(4x) = -1

The corresponding trig identity is cos(A - B). Thus:

cos(7x - 4x) = cos(7x)cos(4x) + sin(7x)sin(4x) = -1

cos(3x) = -1

cos = -1 at π, so:

3x = π

x = π/3

We can also find another solution. Let 3π = -1:

3x = 3π

x = π

Thus, solutions on [0, 2π) are π/3 and π.

8 0

4 years ago

What is the equation of a line, in point-slope form, that passes through (-4, -1) and has a slope of (5, 7)

bearhunter [10]

It is y+1=0.9(x+4) because the formula is y - y1=m(x + x1) you only need one point and the slope. If you have two points, you need to find the slope by using the slope formula slope=y2-y1/x2-x1. Filling it in it would look like slope=7-(-1)/5-(-4). The double negatives cancel each other out and it turns to addition signs leaving us with slope=7+1/5+4 so the slope is 8/9 or 0.9. Now you can fill out the point-slope formula y+1=0.9(x+4)

8 0

3 years ago

Read 2 more answers

Find C round the answer to the nearest hundredth

Tasya [4]

Answer:

48.85 degrees

Step-by-step explanation:

To find the measure of the angle, use the inverse sine function.

Since Sin C = 55/73, so the inverse sine is $sin^{-1} \frac{55}{73}$ .