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3 years ago

Math question please help

Mathematics

1 answer:

spin [16.1K]3 years ago

8 0

The formula of a midpoint of the segment between the points

$(x_1,\ y_1),\ (x_2,\ y_2)\\\\M\left(\dfrac{x_1+x_2}{2},\ \dfrac{y_1+y_2}{2}\right)$

We have:

$(17,\ -11),\ (-14,\ -16)$

Substitute:

$M\left(\dfrac{17+(-14)}{2},\ \dfrac{-11+(-16)}{2}\right)\to M\left(\dfrac{3}{2},\ \dfrac{-27}{2}\right)$

<h2>Answer: B.</h2>

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Solve this for most Brainly

Ede4ka [16]

Answer:

1 - 22

2 -

$- 4x {y}^{3} - 6 {x}^{4} {y}^{3} + 7 {y}^{4} - 8 {x}^{4} {y}^{4}$

3- ( x = -4)

4 - Irrational numbers

$\sqrt{53} \: \: \: \: \: \sqrt{19} \: \: \: \: \pi$

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$0 \: \: \: \: \: \frac{ - 12}{6}$

rational

$\frac{2}{3} \: \: \: \: \frac{6}{45}$

natural numbers 8

5 0

2 years ago

the length of a rectangle is 7 yd more than 5 times the width. the perimeter is 150 yd. find the length and the width.

Vaselesa [24]

P = 2(L + W)
P = 150
L = 5W + 7

150 = 2(5W + 7 + W)
150 = 2(6W + 7)
150 = 12W + 14
150 - 14 = 12W
136 = 12W
136/12 = W
11.33 (or 11 1/3) = W <=== width

L = 5W + 7
L = 5(34/3) + 7
L = 170/3 + 7
L = 170/3 + 21/3
L = 191/3 (or 63 2/3) = L <=== length

4 0

3 years ago

$2.50 for 5 ounces what is the unit rate of that

daser333 [38]

1.<span>5 ounces for $2.50
2.divide both of the numbers by 5
3.you get 1 ounce for 0.50 cent</span>

6 0

3 years ago

Read 2 more answers

Write money amounts using a leading zero if necessary & with 2 decimal places (For example: 0.80 or 0.72 or 1.23)

goldenfox [79]

9514 1404 393

Answer:

63 mph
3 donut holes per kid
$0.70 per pound
$2.25 per km

Step-by-step explanation:

In this context, "per" and "for" mean "divided by."

630 mi/(10 h) = 63 mi/h
(24 dh)/(8 kid) = 3 dh/kid
$3.50/(5 lb) = $0.70 /lb
$32/(14 2/9 km) = $32/(128/9 km) = $(9/4)/km = $2.25 /km

3 0

3 years ago

Find the range of the following piecewise function.

mash [69]

Answer:

$\huge\boxed{[-5;\ -2)\ \cup\ [3;\ 13)}$

Step-by-step explanation:

The following piecewise functions are linear functions. The graph of any of them is a line segment.

We just need to calculate the value of the function at each end specified in the brace.

$y=3x-2\ \text{if}\ -1\leq x$

Substitute x =-1 and x = 0:

$x=-1\\y=3(-1)-2=-3-2=-5\\\\x=0\\y=3(0)-2=0-2=-2$

Range of this piece is [-5; -2)

$y=2x+3\ \text{if}\ 0\leq x$

Substitute x =0and x = 5:

$x=0\\y=2(0)+3=0+3=3\\\\x=5\\y=2(5)+3=10+3=13$

Range of this piece is [3; 13)

Therefore the range of the following piecewise function is:

$[-5;\ -2)\ \cup\ [3;\ 13)$

Look at the picture.

6 0

2 years ago