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3 years ago

Solve for x. 4 15 6 X x = [?] Enter the number in decimal form

Mathematics

1 answer:

posledela3 years ago

6 0

Answer:

Step-by-step explanation:

x / 6 + 4 = 15

To find x ;

Subtrac4 from both sides

x / 6 + 4 - 4 = 15 - 4

x / 6 = 11

Multiply both sides by 6

x / 6 * 6 = 11 * 6

x = 66

Value of x = 66

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Simplify the following if x = 3 & y = 4:

sashaice [31]

Just enter the information in x and y. For example,

As we know, x = 3 , y = 4

So....

1. 2 (3) + 4

6 + 4 = 10

2. 3 (3) + 2 (4)

9 + 8 = 17

Try to do the rest questions by yourself. It's easy! All the best.

4 0

2 years ago

Arrange the steps in the correct order to perform this subtraction problem.

Mashutka [201]

1.1 × 103 - 4.9 × 102   First do 1.1 × 103
113.3 - 4.9 × 102   Then do 4.9 × 102
11.3 - 499.8   Finally do 11.3 - 499.8
-488.5 And your final answer would be negative 488.5    aka -488.5

3 0

3 years ago

Read 2 more answers

How can sums and differences of cubes be identified for factoring?

yan [13]

Answer:

Step-by-step explanation:

The sum of two perfect cubes breaks down into two factors, the first is the sum of their cube roots, and the second is made up of the square of the first root minus the product of both roots plus the square of the second root.

The difference of two perfect cubes is decomposed into two factors, the first is the difference of their cube roots, and the second is made up of the square of the first root plus the product of both roots plus the square of the second root.

5 0

4 years ago

to find out whether a new serum will arrest leukemia, mice, all with an advanced stage of the disease, are selected. mice rec

8_murik_8 [283]

No, the serum is not effective because the p-value for the hypothesis test is greater than the level of significance, and the null hypothesis that the means of the two populations are equal is not rejected.

We are given the hypothesis as:

H₀: μ₁ − μ₂ = 0

H₁: μ₁ − μ₂ ≠ 0 where,

H₀ = the null hypothesis,

H₁ = the alternative hypothesis.

Calculate the test statistic. The equation is:

t = x₁ - x₂ / √pooled variance(1/n₁ + 1/n₂)

Substituting the values, we get that:

t = 2.86 - 2.075 / 2.81(1/5 + 1/4) = 0.699

We need to find the value of 0.699 from the t lookup table and the two-tailed probability is 0.5071.

Therefore, No, the serum is not effective because the p-value for the hypothesis test is greater than the level of significance, and the null hypothesis that the means of the two populations are equal is not rejected.

Know more about “hypothesis” here: brainly.com/question/11555274

#SPJ4

8 0

2 years ago

Read 2 more answers

Please help and explain

sveticcg [70]

Answer:

x = 71

Step-by-step explanation:

Since the 2 legs are congruent ( both 21 ) then the triangle is isosceles.

Thus the base angles are congruent, then