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3 years ago

Help please ...,,...... i

Mathematics

2 answers:

lana [24]3 years ago

7 0

The square root of 17

Anon25 [30]3 years ago

4 0

Answer:

$\sqrt{ { (- 1 + 2)}^{2} + {(3 + 1)}^{2} }$

$\sqrt{17}$

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Christine received a $15.00 gift card or a photo center. She used it to buy prints that cost 7 cents each. The remaining balance

gavmur [86]

Answer:

Remaining balance is $12.2

Step-by-step explanation:

see all steps in picture.

6 0

3 years ago

-9f +19-1 + f) 12-=8f <br>is this the answer?

jeka94

Hi!

-9f + 19 - 1 + f is actually -8f + 18.

To do this we add like terms, -9f and f; and 19 and -1

-9f + f is -8f

19 - 1 is 18

Therefore your answer is -8f + 18

7 0

3 years ago

can I see the formula for this question. Find the distance traveled in 20 seconds by an object traveling at a constant velocity

Butoxors [25]

You need the formula: feet per second = feet/second
Now you have to recast the formula to:
feet per second * second = feet , because you want to know the number of feet.

At the bottom is the answer.

At last you have to insert the values:
28 feet per second * 20 seconds = 560 feet

5 0

4 years ago

Which shows the graph of the solution set of 2x+3y≤6?

mel-nik [20]

Answer:

Option (a) is correct.

Step-by-step explanation:

Given : equation 2x + 3y ≤ 6

We have to choose out of given option the graph that shows the graph of the solution set of 2x + 3y ≤ 6

Consider the given equation 2x + 3y ≤ 6

We first find the points where the equation cut x- axis and y-axis.

Thus,

For x - axis put y = 0 ,

We get 2x + 3(0) ≤ 6 ⇒ 2x ≤ 6 ⇒ x ≤ 3

Thus, point (3,0)

For y - axis put x = 0 ,

We get 2(0) + 3y ≤ 6 ⇒ 3y ≤ 6 ⇒ y ≤ 2

Thus, point (0,2)

For region we choose a test point and find the value of x and y on that test point and check whether it satisfy the inequality satisfies or not.

Consider the point (0, 0) , then inequality becomes,

2(0) + 3(0) ≤ 6 ⇒ 0 ≤ 6 (true)

Hence, region below the line will be considered.

Thus, Option (a) is correct.

6 0

3 years ago

Read 2 more answers

Imagine that you have entered the following distribution of scores into the program: 7, 9, 6, 3, 7, 8, 4, 10, 7, 9. The mean of

ozzi

Answer:

Step-by-step explanation:

Mean refers to the average value of the set of data.

It is the central value of the set of data.

Another word for Mean is average.

Given scores:7, 9, 6, 3, 7, 8, 4, 10, 7, 9

Solution:

Sum of observations = $7+ 9+ 6+ 3+ 7+ 8+ 4+ 10+ 7+ 9=70$

Number of observations = 10

Mean = Sum of observations/Number of observations = $\frac{70}{10}=7$

If observation 3 is removed:

Sum of observations = $7+ 9+ 6+ 7+ 8+ 4+ 10+ 7+ 9=67$

Number of observations = 9

Mean = Sum of observations/Number of observations = $\frac{67}{9}=7.44$

If observation 4 is removed:

Sum of observations = $7+ 9+ 6+ 3+ 7+ 8+ 10+ 7+ 9=66$

Number of observations = 9

Mean = $\frac{66}{9}=7.3$

If observation 6 is removed:

Sum of observations = $7+ 9+ 3+ 7+ 8+ 4+ 10+ 7+ 9=64$

Number of observations = 9

Mean = $\frac{64}{9}=7.1$

If observation 7 is removed:

Sum of observations = $9+ 6+ 3+ 8+ 4+ 10+ 9=49$

Number of observations = 7

Mean = $\frac{49}{7}=7$

If observation 8 is removed:

Sum of observations = $7+ 9+ 6+ 3+ 7+ 4+ 10+ 7+ 9=62$

Number of observations = 9

Mean = $\frac{62}{9}=6.9$

If observation 9 is removed:

Sum of observations = $7+ 6+ 3+ 7+ 8+ 4+ 10+ 7=52$

Number of observations = 8

Mean = $\frac{52}{8}=6.5$

If observation 10 is removed:

Sum of observations = $7+ 9+ 6+ 3+ 7+ 8+ 4+ 7+ 9=60$

Number of observations = 9

Mean = $\frac{60}{9}=6.7$

Therefore, mean of this distribution of scores would be changed the most if a score 3 was removed from the data set.

6 0

4 years ago