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2 years ago

Write a whole number that rounds to 700,000 if we are rounding to the nearest hundred thousand.

Mathematics

1 answer:

sasho [114]2 years ago

6 0

I think 1,000,000 or 800,000

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Ahsan

NikAS [45]

It is number 1 and number 2 because the equation is 242× 62 and Number 1 and 2 are just breaking it down

7 0

3 years ago

5cosx -2sin(x/2) +7=0 Help me to find x step by step pls

miskamm [114]

Answer:

x = 180

Step-by-step explanation:

First, you need to know

1. Double-angle formula:

cos(2x) = $cos^{2}x - sin^{2}x$

2. Pythagorean identity:

$cos^{2}x + sin^{2}x = 1$

Back to your problem, replacing the variable by the above:

$5cosx-sin\frac{x}{2}+7 = 0$

$5(cos^{2}\frac{x}{2}-sin^{2}\frac{x}{2}) - 2sin\frac{x}{2} + 7 = 0$ By Double-angle formula

$5(1 - 2sin^{2}\frac{x}{2}) - 2sin\frac{x}{2} + 7 = 0$ By Pythagorean identity

Given $y = \frac{x}{2}$

$5(1-2sin^{2}y) - 2siny + 7 = 0$

$10sin^{2}y+2siny-12=0$

$5sin^{2}y+siny-6=0$

$(5siny + 6)(siny - 1)=0$ , we know -1 < sinx < 1, for every x ∈ R

$siny = 1, y =90$

$y = \frac{x}{2}$

$x = 180$

8 0

3 years ago

What is 136°=92°+6r+2°

Lina20 [59]

What is being solved for is r.

$136 = 92 + 6r + 2$

$136 - 92 - 2 = 6r$

$42 = 6r$

$r = 6$

3 0

3 years ago

Y= 4x+6 -5x-y=21 what is the answer?

slamgirl [31]

I think the answer is (-8,-26)

5 0

2 years ago

Find the slope of the line that is perpendicular to the line that passes through the points (5,2) and (8,1)

Naya [18.7K]

Answer:

Step-by-step explanation:

The slope of the line passing through the points is

m = (y2-y1)/(x2-x1)

= ( 1-2)/(8-5)

= -1/3

The slope that is perpendicular is the negative reciprocal which is

- ( 1/(-1/3)

+ 3/1

The perpendicular slope is 3

3 0

2 years ago