All categories

2 years ago

What is the value 1/2 ×3+5.2y when x=2 and y=3

2 answers:

8 0

18.6 because one half times 2 Is just 1. 1 times 3 is 3. 5.2 times 3 equals 15.6. Then add 15.6 and 3 which gives you 18.6

Hatshy [7]2 years ago

4 0

The answer is 18.6, because when multiplying all the variables with the coefficients the equation is 1/2*6+15.6, 6 turns into 3 because it is halved and the rest of the equation stays the same so the new equation now is 3+15.6 and you simply add them and it is 18.6.

You might be interested in

Help please and explain how you did it

Harrizon [31]

1 yard = 3 feet

10 yards = 30 feet (multiply both sides by 10)

------------------

1 yard = 3 feet

2/3 yard = 2 feet (multiply both sides by 2/3)

-------------------

10 yards + 2/3 yard = 30 feet + 2 feet = 32 feet

<h3>The final answer is 32 feet</h3>

5 0

2 years ago

Read 2 more answers

Please help me ASAP

grin007 [14]

Answer:

Step-by-step explanation:

Base 5 uses 0, 1 , 2, 3, 4

When we add 2+ 1 = 3

When we add 4 +3 = 7 = 5 +2 . 5 will be carried as 1

4 + 3= 12

In subtraction, 32 - 4

From 2 we cannot subtract 4. So, borrow 5 from 3. So, 2+5 = 7.

7-4=3

32 -4 = 23

I have attached the sums

8 0

2 years ago

3. Which expression is a simplified form of 3x2 - 4x + 5 – x2 + 2x - 1?

Sphinxa [80]

Answer:

Option a

Step-by-step explanation:

Adding them, you get 2x²-2x+4

Answered by GAUTHMATH

7 0

3 years ago

A past survey of 1, 068,000 students taking a standardized test revealed that 8.9% of the students were planning on studying eng

lorasvet [3.4K]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The interval is $-0.0037 < p_1-p_2$

Step-by-step explanation:

From the question we are told that

The first sample size is $n _1 = 1068000$

The first sample proportion is $\r p_1 = 0.089$

The second sample size is $n_2 = 1476000$

The second sample proportion is $\r p_2 = 0.092$

Given that the confidence level is 95% then the level of significance is mathematically evaluated as

$\alpha = (100 - 95 )\%$

$\alpha = 0.05$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table

The value is

$Z_{\frac{\alpha }{2} } =z_c= 1.96$

Generally the 95% confidence interval is mathematically represented as

$(\r p_1 - \r p_2 ) -z_c \sqrt{ \frac{\r p_1 \r q_1 }{n_1} + \frac{\r p_2 \r q_2 }{n_2}} < (p_1 - p_2 ) < (\r p_1 - \r p_2 ) +z_c \sqrt{ \frac{\r p_1 \r q_1 }{n_1} + \frac{\r p_2 \r q_2 }{n_2}}$

Here $\r q_1$ is mathematically evaluated as $\r q_1 = (1 - \r p_1)= 1-0.089 =0.911$

and $\r q_2$ is mathematically evaluated as $\r q_2 = (1 - \r p_2) = 1- 0.092 = 0.908$

$(0.089 - 0.092 ) -1.96 \sqrt{ \frac{0.089* 0.911 }{1068000} + \frac{0.092* 0.908 }{1476000}} < (p_1 - p_2 ) < (0.089 - 0.092 ) +1.96 \sqrt{ \frac{0.089* 0.911 }{1068000} + \frac{0.092* 0.908 }{1476000}}$

$-0.0037 < p_1-p_2$

3 0

3 years ago

On the last three evenings, Christine received a total of 77 phone calls at the call center. The second evening, she received 2

GarryVolchara [31]

Answer:

1st evening: 23

2nd evening: 36

3rd evening: 18

Step-by-step explanation:

Total: 77

2nd: 2 * 3rd evening

1st: 3rd evening + 5

Let x represent the 3rd evening.

77=(2*x)+(x+5)+x

x=18

7 0

3 years ago