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3 years ago

9

Triangle ABC is shown on the coordinate plane below. The triangle is reflected across the y-axis and then translated 3 unit to t

he right to form triangle A’B’C’.

1 answer:

babunello [35]3 years ago

7 0

Answer:

It’s c

Step-by-step explanation:

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Can somebody please help me with this

EastWind [94]

X=12. you just have to Square root 144.

3 0

3 years ago

Read 2 more answers

The total cost 95 pens and 89 notebooks is RS 7434.The total cost of 1 pen and 1 notebook is 81.What the cost of 1 notebook?

Alex

Answer:

The cost of 1 note book = Rs 43.5

Step-by-step explanation:

Given in question as :

95 pens (P) + 89 notebook (N) total cost = Rs 7434

1 pen (P) + 1 (N) total cost = Rs 81

So, from above equation

95 pens (P) + 89 notebook (N) total cost = Rs 7434

1 × 95 pen (P) + 1× 95 notebook (N) total cost = Rs 81 × 95

Or, (95 pens (P) + 95 notebook (N) ) - (95 pens (P) + 89 notebook (N) ) = (7695 - 7434)

Or , 6 N = Rs 261

Or, N = $\frac{261}{6}$ = Rs 43.5

Hence the cost of 1 notebook is Rs 43.5 Answer

4 0

3 years ago

What would you do to solve the system?

Molodets [167]

Answer:

To decide whether to add or subtract, determine if the values of the coefficients are the same or opposites:

. If the values are the same, subtract the equations.

• If the values are opposites or additive inverses, add the equations.

Step-by-step explanation:

Given

$12x = 48 - 8y$

$10x + 8y = 38$

Required

How to solve

Options (1) and (2) are incorrect because none of the options eliminate x or y.

For option (3),

- Check for the coefficients of x and y

- If they are the same (sign and value), then subtract; otherwise add

For instance:

$12x = 48 - 8y$

$10x + 8y = 38$

Rewrite the second equation

$12x = 48 - 8y$

$10x = 38 - 8y$

The coefficient of y are the same, so we subtract;

$12x - 10x = 48 - 38 -8y -(-8y)$

$12x - 10x = 48 - 38 -8y +8y$

$2x = 10$

$x= 5$

<em>See that y has been eliminated</em>

8 0

3 years ago

A gambler claims that horses in a horse race that start closer to the rail have an advantage over horses that start further from

k0ka [10]

Answer:

Hence, the p-value ( 0.699986) > 0.05, FAIL TO REJECT THE NULL HYPOTHESIS

there is no significant evidence that starting position is a factor in horse races

Step-by-step explanation:

Given the data in the question;

Starting position: 1 2 3 4 5 6

# of Winners: 25 22 18 19 21 15

Mean x" (E) = (25+22+18+19+21+15)/6 = 120/6 = 20

Observed/Expected value table;

O E ((O-E)²) / E

25 20 1.25

22 20 0.2

18 20 0.2

19 20 0.05

21 20 0.05

15 20 1.25

∑ 3

so using chi square = ∑(((O-E)²) / E) = 3

DF = n-1 = 6-1 = 5

then, the critical chi square value is;

significance level = 0.05

chi square( critical ) = 11.07049769

from table;

p - value = 0.699986

Hence, the p-value ( 0.699986) > 0.05, FAIL TO REJECT THE NULL HYPOTHESIS

there is no significant evidence that starting position is a factor in horse races

8 0

3 years ago

Altogether Central High School's bands have 40 trumpets and 35 tubas. Carlee says the ratio of trumpets to tubas is 40:35. Danny

inna [77]

Answer:

Explanation is given below.

Step-by-step explanation:

Given:

Number of Trumpets = 40

Number of tubas = 35

Carlee says, the ratio of trumpets to tubas = 40 : 35

Danny says, the ratio of trumpets to tubas = 8 : 7

To explain why the two ratios are equivalent.

Solution:

Equivalent ratios are all ratios which are equal to each other in their reduced to simplest form.

The ratio of trumpets to tubas can be given as = $\frac{40}{35}$

To reduce the ratio to its simplest form, we divide both numbers by their G.C.F.

The G.C.F. for 40 and 35 is 5.

So, we divide numerator and denominator by 5.

⇒ $\frac{40\div5}{35\div 5}$

⇒ $\frac{8}{7}$

Thus, the simplest ratio of trumpets to tubas can be given as = 8:7

This is why both Danny and Carlee are correct with the ratios of trumpets to tubas.

Carlee gave the direct ratio, while Danny gave the simplest ratio.

5 0

4 years ago