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2 years ago

Work out 2.6 cos 12° rounded to 2 d.p.

Mathematics

1 answer:

AlexFokin [52]2 years ago

8 0

Answer:

2.54. Calculate the approximate value:2.6 *

Step-by-step explanation:

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Solve the equation. x2 − 6x − 7 = 0

zlopas [31]

Answer:

x = 7 and x = -1

Step-by-step explanation:

Step 1: Factor

x^2 - 6x - 7 = 0

(x - 7)(x + 1) = 0

Step 2: Solve for x

(x - 7)(x + 1) = 0

x - 7 = 0 and x + 1 = 0

x - 7 + 7 = 0 + 7 and x + 1 - 1 = 0 - 1

x = 7 and x = -1

Answer: x = 7 and x = -1

8 0

3 years ago

Use an inverse function to write θ as a function of x.

kotykmax [81]

Answer:

Step-by-step explanation:

Using the tangent ratio in the right triangle

tanθ = $\frac{opposite}{adjacent}$ = $\frac{x}{3}$ , then

θ = arctan $\frac{x}{3}$ → C

4 0

3 years ago

Answer and show work #38

Serggg [28]

Did you get your answer yet

6 0

3 years ago

What is the slope in slope-intercept form for these graphs?

Irina-Kira [14]

Answer:

Step-by-step explanation:

for this graph find rise over run , and where the line crosses they y axis.. sooo ..

it crosses at -2 and the slope is rise over run or y/x and I can see by the graph that the line goes up 1 when it goes over 1... so the slope is +1

sooo...

use the slope intercept form y = mx + b

y = 1x + (-2)

y = x - 2 :)

5 0

3 years ago

Pls help I don’t understand I’ll give brainliest

Aloiza [94]

Answer:

$- 32$

Step-by-step explanation:

1) Simplify

$\sqrt{32} \: to \: 4 \sqrt{2}$

$- 8 \sqrt{2} \times \frac{1}{2} \times 4 \sqrt{2}$

2) Use this formula: a/b × c/d = ac/bd.

$- \frac{8 \sqrt{2} \times 1 \times 4 \sqrt{2} }{2}$

3) Simplify.

$- \frac{32 \sqrt{2 \sqrt{2} } }{2}$

$simplify \: 32 \sqrt{2 } \sqrt{2} \: to \: 32 \sqrt{4}$

5) Since 2 × 2 = 4, the square root of 4 is 2.

$- \frac{32 \times 2}{2}$

6) Simplify 32 × 2 to 64.

$- \frac{64}{2}$

7) Simplify 64/2 to 32.

$- 32$

Therefor, the answer is option three -32

8 0

3 years ago