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3 years ago

What type of shape will the reflected figure be?

Mathematics

2 answers:

julsineya [31]3 years ago

8 0

How does your figure look like?

dem82 [27]3 years ago

4 0

Answer:

where is the figure?

Step-by-step explanation:

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2) When we divide ______ by 8 gives a quotient of 75 and a remainder of 3

Pani-rosa [81]

Answer:

603

Step-by-step explanation:

603/8

600/8 + 3/8 = 75, 3/8

4 0

3 years ago

A sample of 11 students using a Ti-89 calculator averaged 31.5 items identified, with a standard deviation of 8.35. A sample of

lina2011 [118]

Answer:

We reject H₀, with CI = 90 % we can conclude that the mean numbers of times identified with Ti-84 does not exceed that of the Ti-89 by more than 1,80

Step-by-step explanation:

Ti-89 Calculator

Sample mean x = 31,5

Sample standard deviation s₂ = 8,35

Sample size n₂ = 11

Ti-84 Calculator

Sample mean y = 46,2

Sample standard deviation s₁ = 9,99

Sample size n₁ = 12

t(s) = ( y - x - d ) / √s₁²/n₁ + s₂²/n₂

t(s) = 12,9 / √(99,8/12) + (69,72/11)

t(s) = 12,9 / √8,32 + 6,34

t(s) = 12,9 / 3,83

t(s) = 3,37

Test Hypothesis

Null Hypothesis H₀ y - x > 1,80

Altenative Hypothesis Hₐ y - x ≤ 1,80

We have a t(s) = 3,37

We need to compare with t(c) critical value for

t(c) α; n₁ +n₂-2 df = 12 +11 -2 df = 21

If we choose CI = 95 % then α = 5 % α = 0,05

From t-student table

t(c) = 1,72

t(s) = 3,37

t(s) >t(c)

t(s) is in the rejection region therefore we accept Hₐ with CI = 95 %

8 0

3 years ago

What is 7(1+2x)= -49

mihalych1998 [28]

Answer: -3.5x

Step-by-step explanation:

Distribute 7 to 1 and 2 then

3 0

3 years ago

Read 2 more answers

Trigonometry that’s due in one hour :(

expeople1 [14]

Answer:

(a) $\theta=\tan^{-1}(-0.890)$

$\implies \theta=-41.66908262 \pm 180 \textdegree n$

$\implies \theta=138.3309174..., 318.3309174...$

$\implies \theta=138\textdegree, 318\textdegree$

(b) $\theta=\cos^{-1}\left(\dfrac{\sqrt{3} }{2}\right)$

$\implies \theta=30 \textdegree \pm360 \textdegree n, 330 \textdegree \pm360 \textdegree n$

$\implies \theta=30 \textdegree , 330 \textdegree$

$\implies \theta=30 \textdegree \pm360 \textdegree n, 150 \textdegree \pm360 \textdegree n$

$\implies \theta=30 \textdegree , 150 \textdegree$

3 0

2 years ago

Vanessa spent 4/5 of her money at the bookstore. In total, the books cost $45. How much did she start with?

Papessa [141]

Answer:

The money she start with is $25.

Step-by-step explanation:

Given:

Vanessa spent 4/5 of her money at the bookstore.

In total, the books cost $45.

Now, to find the money she start with.

Let the money she start with be $x$ .

Money spent at the bookstore $\frac{4}{5} x$ .

Total books cost = $45.

According to question:

$x+\frac{4}{5}x=45$

⇒ $x+\frac{9x}{5} =45$

Adding the variables we get:

⇒ $\frac{9x}{5} =45$

Multiplying both sides by 5 we get:

⇒ $9x=225$

Dividing both sides by 9 we get:

⇒ $x=\$25$

Therefore, the money she start with is $25.

8 0

3 years ago