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3 years ago

Which of the diagrams below represents the statement "If it is

Mathematics

1 answer:

dlinn [17]3 years ago

4 0

Do you guys have a picture for I can answer

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Which of the following steps would you perform to the system of equations below so that the equations have equal x-coefficients?

12345 [234]

The answer is A. Multiply both sides of the top equation by 2

So since we know that 4 × 2 = 8, it would only make sense to multiply both sides by 2 so that the top equation has the x coefficient be 8.

5 0

3 years ago

Read 2 more answers

SAT math scores have a bell-shaped distribution with a mean of 515 and a standard deviation of 114.

nadezda [96]

Hey there mate :)

Analysis :

$401 = 515 - 114 = u - 6$

And

$173 = 515 - 3.114 = u - 36$

$= \frac{p(u - 36 < u < u + 36) - p(u - 6 < u < u + 6)}{2}$

$= \frac{99.73percent - 68.21percent}{2}$

$= \frac{31.46percent}{2}$

$= {15.73percent}$

Then, calculating,

$u - 26 = 515 - 2 \times 114 = 287$

And

$u + 26 = 515 + 2 \times 114 = 743$

Then,

$The \: Range = (287,743)$

Final Answers :-

15.73 %

(287,743)

~Benjemin360

3 0

2 years ago

Can anyone help please right answer only

BARSIC [14]

The value of x is 27°.

Solution:

Given $\triangle \mathrm{ACB} \cong \Delta \mathrm{DCE}$ .

∠A = 3x – 10, ∠C = 45°, ∠D = 2x + 10

If two triangles are congruent, then the angles are congruent.

∠A = ∠E (Alternate interior angles)

∠C = ∠C (Reflexive property)

∠B = ∠D (Alternative interior angles)

⇒ ∠B = 2x + 10

Sum of the interior angles of the triangle = 180°

In ΔACB,

3x – 10 + 45° + 2x + 10 = 180°

5x + 45° = 180°

Subtract 45° on both sides of the equation.

5x = 135°

Divide by 5 on both sides of the equation.

x = 27°

The value of x is 27°.

7 0

3 years ago

What are some Ratios equivalent to 3:12

Liula [17]

Answer:

6:24

1:4

2:8

Step-by-step explanation:

Simplified all the way is 1:4 so just make sure that you multiply the same number by both the numerator and the denominator

4 0

3 years ago

Read 2 more answers

Find and sketch the domain of the function. f(x,y)=√(4-x^2-y^2) +√(1-x^2)

elena55 [62]

Answer:

Hello

Step-by-step explanation:

The domain is limited with 2 lines parallel: -1 ≤ x ≤ 1

and the disk ? (inside of a circle) of center (0,0) and radius 2

$dom\ f(x,y)=\{(x,y) \in \mathbb{R} ^2 | \ -1\leq x \leq -1\ and \ ( -\sqrt{4-x^2} \leq \ y \leq \sqrt{4-x^2}\ ) \ \}\\$

3 0

2 years ago