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3 years ago

HELPPP THIS IS DUE SOON! I WILL MARK BRAINLIEST

Mathematics

2 answers:

sammy [17]3 years ago

6 0

What he just did ^^^

expeople1 [14]3 years ago

4 0

Answer:

7.3

Step-by-step explanation:

For this question, you must use the distance formula. The distance formula is based around Pythagorean Theorem, so you will see some similarities.

Distance = $\sqrt{(x_{2} - x_{1})^{2} + (y_{2} - y_{1})^{2}$

X2 is 7 (X coordinate of school)

X1 is 5 (X coordinate of friend's house)

7 - 5 = 2

2^2 = 4

Y2 is 7 (Y coordinate of school)

Y1 is 0 (Y coordinate of friend's house)

7 - 0 = 7

7^2 = 49

4 + 49 = 53

$\sqrt{53}$ = 7.2801...

<em>Round to the nearest tenth...</em>

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What is the 101st term for the sequence 13, 9, 5, 1... ?

NeX [460]

Step-by-step explanation:

a=13
d=13-9=4

${:}\longrightarrow$ $\sf S_n={\dfrac {n}{2}}\left [2a-(a-1)d\right]$

${:}\longrightarrow$ $\sf S_101={\dfrac {101}{2}}\left [26 (12)4\right]$

${:}\longrightarrow$ $\sf 50.5×1248$

${:}\longrightarrow$ $\sf S_101=63504$

${:}\longrightarrow$ $\sf a_n=a+(n-1)d$

${:}\longrightarrow$ $\sf a_101=13+(101-1)-4$

${:}\longrightarrow$ $\sf a_101=13+100(-4)$

${:}\longrightarrow$ $\sf 13-400$

${:}\longrightarrow$ $\sf a_101=-387$

8 0

3 years ago

Explain the difference in meaning between 1-3 and -3

sveticcg [70]

Answer:

The difference in meaning is that

-3 is a signed value. It lies to the left of zero

+3 is also a signed value, and since it is positive, it lies to the right of zero

|-3| is just the physical distance (left or right) of -3 from zero. Since we live in a physical world, all distances are positive, so its signed value is 3.

Since +3 is also 3 units from zero, |+3| = 3

|-3| = |+3| = 3 since both are three units away from zero.

So, when using absolute values as numbers, rather than distances,

|x| = x if x is not negative

|x| = -x if x is negative

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3 years ago

Emma's backpack has a mass of 6523 grams. The total mass of her backpack and Benjamin's backpack together is 9009 grams. What is

Rus_ich [418]

Answer:

2486

Step-by-step explanation:

9009-6523=2486

6 0

3 years ago

Read 2 more answers

Please Help Me. The table shows a proportional relationship.

matrenka [14]

To find the box answer, you can divide y by x:

$\frac{y}{x}$

You can check every pair, bit I'm going to show you the first 2 as an example:

$\frac{ - 6}{ - 4} = \frac{3}{2} \\ \\ \frac{ - 3}{ - 2} = \frac{3}{2}$

So 3/2 is the answer!

8 0

4 years ago

Question 17&18. Make x the subject of the formula

aniked [119]

Answer:

17. x = y^2 - 2ay +a^2

18. x = y^2 - a

Step-by-step explanation:

17. Since we want to make x the subject of the formula, we first isolate the square root of x and get

$\sqrt{x}$ = y - a.

squaring both sides,

x = y^2 - 2ay +a^2

18. Since both x and the a are under the square root, we first start by squaring both sides.

So y^2 = x+a.

Isolating the x, we get

x = y^2 - a

4 0

3 years ago