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3 years ago

Put operations and try to reach the target number. You do not have to use all 6 numbers.

Mathematics

1 answer:

victus00 [196]3 years ago

6 0

You can repeat numbers,don’t you?
For example option b
75 x 4 =300 x 3 =900 + 4 = 904

Right?

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Answer to letter B , C, D

Feliz [49]

Answer:

See below.

Step-by-step explanation:

Our expression given: 3(x-6) + 2y

A. Substitute x = -7 and y = 10 into the equation.

$3( - 7 - 6) + 2(10)$

Use the Distributive Property:

$- 21 - 18 + 20$

Solve:

$- 19$

B. Substitute x = 5 and y = -2 into the equation.

$3(5 - 6) + 2( - 2)$

Use the Distributive Property:

$15 - 18 + -4$

Solve:

$-7$

C. Substitute x = 0 and y = 6 into the equation.

$3(0 - 6) + 2(6)$

Use the Distributive Property:

$- 18 + 12$

Solve:

$-6$

D. Substitute x = 3 and y = 3 into the equation.

$3(3 - 6) + 2(3)$

Use the Distributive Property:

$9 - 18 + 6$

Solve:

$-3$

8 0

3 years ago

To measure the length of the pond, Jacob marked off congruent triangles as shown in the diagram.

kondaur [170]

Answer:

Step-by-step explanation:

5 0

3 years ago

12. Factor completely: 64x^3 + 729

Dafna1 [17]

Answer:

(4 x + 9) (16 x^2 - 36 x + 81)

Step-by-step explanation:

Factor the following:

64 x^3 + 729

64 x^3 + 729 = (4 x)^3 + 9^3:

(4 x)^3 + 9^3

Factor the sum of two cubes. (4 x)^3 + 9^3 = (4 x + 9) ((4 x)^2 - (4 x) 9 + 9^2):

(4 x + 9) ((4 x)^2 - 4 9 x + 9^2)

4×9 = 36:

(4 x + 9) ((4 x)^2 - 36 x + 9^2)

Multiply each exponent in 4 x by 2:

(4 x + 9) (4^2 x^2 - 36 x + 9^2)

4^2 = 16:

(4 x + 9) (16 x^2 - 36 x + 9^2)

9^2 = 81:

Answer: (4 x + 9) (16 x^2 - 36 x + 81)

5 0

4 years ago

Read 2 more answers

Which statements are true regarding the development of trigonometry? Check all that apply.

love history [14]

Answer:

all options are correct.

Step-by-step explanation:

The correct options among all the options are:

Ancient mathematicians used trigonometry to find angles of triangles.

Trigonometry is used to find the size of a missing side or angle in a right- angled triangle using the sine, cosine or tangent ratios.

Ancient mathematicians used trigonometry to track the position of the sun.

It is also used in oceanography in calculating the height of tides in oceans.

Tangent was the first trigonometric relationship used by mathematicians.

The three main functions in trigonometry are Sine, Cosine and Tangent.The functions sine, cosine and tangent of an angle are sometimes referred to as the primary or basic trigonometric functions.

Cosine was the first trigonometric relationship used by mathematicians.
Sine was the first trigonometric relationship used by mathematicians.

7 0

3 years ago

Read 2 more answers

It is claimed that the proportion of people who favor the use of oxygenated fuels year around to reduce air pollution is 60%. A

attashe74 [19]

Answer:

Conclusion is that there is sufficient evidence to reject the claim that the proportion of people who favor the use of oxygenated fuels year around to reduce air pollution is 60%.

Step-by-step explanation:

We are given;

Population proportion; p = 60% = 0.6

Sample mean: x¯ = 315

Sample size; n = 500

Significance level = 0.09

Defining the hypothesis, we have;

Null Hypothesis; H0: p = 0.6

Alternative hypothesis; Ha: p > 0.6

z-score formula in this case is;

z = (x¯ - np)/√(np(1 - p))

Plugging in the relevant values;

z = (315 - (500 × 0.6))/√(500 × 0.6(1 - 0.6))

z = 1.72

From z-distribution table, the p-value at z = 1.72 is;

1 - P(Z ≤ z-score)

This gives:

p-value = 1 - 0.95728 = 0.04272

Thus p-value is less than the significance level of 0.09, thus we will reject the null hypothesis and conclude that there is sufficient evidence to reject the claim that the proportion of people who favor the use of oxygenated fuels year around to reduce air pollution is 60%.

6 0

3 years ago