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3 years ago

Help!!!

Mathematics

2 answers:

AlexFokin [52]3 years ago

3 0

Answer:

D) -3n - 2

Step-by-step explanation:

-3(1) - 2 = - 5

-3(2) - 2 = - 8

-3(3) - 2 = - 11

-3(4) - 2 = - 14

-3(5) - 2 = - 17

stepan [7]3 years ago

3 0

Answer:

D) -3n - 2

Step-by-step explanation:

Hope this helps

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chu vi của một hình chữ nhật là 240 cm. Tính diện tích hình chữ nhật đó, biết tỉ số độ dài hai cạnh là 5 và 7

ch4aika [34]

(-) Tỉ số độ dài 2 cạnh là 5 và 7
=> Chiều rộng = 5:12, chiều dài = 7:12
(-) Chu vi = 240 suy ra tổng chiều dài + chiều rộng = 240 : 2 = 120
(-) Chiều rộng = 120 x 5 : 12 = 50
Chiều dài = 120 x 7 : 12 = 70
(-) Diện tích = 50 x 70 = 3500

4 0

3 years ago

I might mark brainliest I just need help

Artemon [7]

Answer:

i think you have to measure your diagram with a protector to find the angles

8 0

2 years ago

Point M is the midpoint of segment JK. Find JK when JM=6x-7 and MK=2x+3.

Whitepunk [10]

If M is the midpoint of JK then JM+MK=JK and JM=MK
so
6x-7=2x+3
minus 2x both sides
4x-7=3
add 7 both sides
4x=10
divide both sides by 4
$x=\frac{10}{4}$
$x=\frac{5}{2}$

sub back

JM=6x-7
$JM=6(\frac{5}{2})-7$
$JM=\frac{30}{2}-7$
$JM=15-7$
JM=8

JM=MK=8
JM+MK=8+8=16=JK

$x=\frac{5}{2}$ and JM=8=MK and JK=16

3 0

4 years ago

Read 2 more answers

What is the slope-intercept form of the function that contains the point (8, 12) and has a slope of _2?

Crank

The function has a slope : m = - 2 and contains the point ( 8, 12 ).
y = m x + b
12 = ( - 2 ) * 8 + b
12 = - 16 + b
b = 12 + 16
b = 28
The slope-intercept form of the function is:
y = - 2 x + 28

3 0

4 years ago

Read 2 more answers

The quadrilateral shown is a rectangle. What is the measure of PR? (round to the nearest hundredth)

sladkih [1.3K]

Option B) 37.12 is the right answer

Step-by-step explanation:

It is given that the qudrilateral is a rectangle which means that opposite sides wil be equal and all interior angles will be 90 degrees

PS = 17

PQ = SR = 33

The diagonal PR will form a right-angles triangle with PR being the hypotenuse

So,

Base = SR = 33

Perpendicular = PS = 17

Hypotenuse = PR = ?

The Pythagoras theorem will be used to find the length of PR

So,

$H^2 = B^2+P^2\\(PR)^2 = (SR)^2 + (PS)^2\\PR^2 = (33)^2+(17)^2\\PR^2 = 1089+289\\PR^2 = 1378\\$

Taking square root on both sides

$\sqrt{PR^2} = \sqrt{1378}\\PR = 37.1214$

Rounding off to nearest 100th

PR = 37.12

Hence,

Option B) 37.12 is the right answer

Keywords: Triangle, Pythagoras theorem

Learn more about triangles at:

#LearnwithBrainly

6 0

4 years ago