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3 years ago

Timed test please help

Mathematics

2 answers:

GarryVolchara [31]3 years ago

6 0

Sheesh but im here for the points but im sorry that I can’t help

MAXImum [283]3 years ago

5 0

10/7 =1.428 80/1.428=56.02

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A line with a slope of -2 passes thru the point (4,7)

Tpy6a [65]

Answer:

y - 7 = -2(x - 4)

Step-by-step explanation:

We are asked to write the equation of a line in point slope form

Step 1 : find slope

We are given the slope to be -2

Slope m = -2

Step 2: substitute m into point slope form

y - y_1 = m( x - x_1)

y - y_1 = -2 ( x - x _1)

Step 3: substitute the point into the equation

y - y_1 = -2( x - x _1)

( 4 , 7)

x_1 = 4

y_1 = 7

y - 7 = -2( x - 4)

We don't need to open the bracket because we are asked to write the equation in a point slope form

6 0

3 years ago

Which value of y would make OP ll LN? A 16 B 24 C 32 D 36

Andreyy89

see the attached figure to better understand the problem

we know that

if OP ll LN

then

by proportion

$\frac{MO}{ML} =\frac{MP}{MN}$

we have that

$MO=28\ units \\ML=28+14=42\ units\\MP=y\ units\\MN=(y+18)\ units$

substitute

$\frac{28}{42} =\frac{y}{(y+18)}\\ \\28(y+18)=42y \\ \\42y-28y=28*18 \\ \\14y=504 \\ \\y=36\ units$

therefore

<u>the answer is</u>

The value of y is $36\ units$

5 0

3 years ago

Read 2 more answers

Solve the equation for the given variable k/3-11=-20

taurus [48]

$\frac{k}{3-11}$ = - 20

You can subtract the numbers in the parenthesis:
(3-11) = (-8)

Multiply the denominator to both sides so it cancels out and isolates the variable $\frac{k}{-8}$ × -8 = - 20 × -8
-8 and -8 cancels out

k = 160

Quick check:
$\frac{160}{(3-11)}$ = -20
$\frac{160}{-8}$ = - 20
- 20 = - 20
Yes its right

the answer is: k =160

3 0

3 years ago

PLEASE HELP !

Lera25 [3.4K]

Answer:

5x + 4y - 20 = 0

Step-by-step explanation:

1. Find the two points given: (0,5) and (4,0)

2. Find the slope of the line:

m = $\frac{5-0}{0-4} = \frac{-5}{4}$

3. Find y intercept by plugging in one point into the y-intercept form

y = (-5/4) x + b

0 = (-5/4) (4) + b

b = 5

4. Write out the equation in y-intercept form

y = (-5/4) x + 5

5. Rewrite it in Ax + By + C = 0 form

(5/4) x + y - 5 = 0

6. Since A B C all need to be integers, multiply the whole equation by 4

5x + 4y - 20 = 0

7 0

3 years ago

An acute triangle has sides that are 14mm and 97mm long, respectively. The 3rd side of the triangle must be greater than what wh

GaryK [48]

No because the greater is 97mm is a great difference between 14 and 97

8 0

3 years ago

Read 2 more answers