1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
raketka [301]
3 years ago
5

Can anyone help me with this?

Mathematics
1 answer:
Rus_ich [418]3 years ago
6 0
15)
20/8 = x / 6
x = 20 * 6 / 8 
x = 15

16)
18/54 = (x+4)/75
1/3 = (x+4) / 75
3(x+4) = 75
3x + 12 = 75
3x = 63
x = 21

SF = 54/18
SF = 3

17)
complement angles sum = 90
90 /18 = 5
so
5 x 11 = 55
5 x 7 = 35

smaller angle = 35 degrees

18)
ratio 4:5:9
4+5+9 = 18
sum of interior angles of a triangle  = 180
180 / 18 = 10

largest angle = 10 x 9 = 90

answer
largest angle = 90 degrees

You might be interested in
32=32+? I need help its annoyings
Andreyy89

Answer:

0

Step-by-step explanation:

32=32+0

5 0
3 years ago
Read 2 more answers
for what value of k, the line joining 3x-ky+7=0 is perpendicular to the line joining (4 ,3) and ( 5, -3).
Schach [20]

Answer:

  • k = 18

=========

<h2>Given</h2>

<h3>Line 1</h3>
  • 3x - ky + 7 = 0

<h3>Line 2</h3>
  • Passing through the points (4, 3) and (5, - 3)

<h2>To find</h2>

  • The value of k, if the lines are perpendicular

<h2>Solution</h2>

We know the perpendicular lines have opposite reciprocal slopes, that is the product of their slopes is - 1.

Find the slope of line 1 by converting the equation into slope-intercept from standard form:

<u><em>Info:</em></u>

  • <em>standard form is ⇒ ax + by + c = 0, </em>
  • <em>slope - intercept form is ⇒ y = mx + b, where m is the slope</em>

  • 3x - ky + 7 = 0
  • ky = 3x + 7
  • y = (3/k)x + 7/k

Its slope is 3/k.

Find the slope of line 2, using the slope formula:

  • m = (y₂ - y₁)/(x₂ - x₁) = (-3 - 3)/(5 - 4) = - 6/1 = - 6

We have both the slopes now. Find their product:

  • (3/k)*(- 6) = - 1
  • - 18/k = - 1
  • k = 18

So when k is 18, the lines are perpendicular.

4 0
1 year ago
In ΔRST, the measure of ∠T=90°, RS = 90 feet, and TR = 76 feet. Find the measure of ∠S to the nearest tenth of a degree.
Rama09 [41]

Answer:

57.6

Step-by-step explanation:

6 0
3 years ago
Least common denominator of 1/10 and 3/5
Alisiya [41]

Answer:

It's 10

Step-by-step explanation:

10 can be divided by five and 5 can also be divided by five and it's the least number that can be divided by five.

6 0
2 years ago
Determine the intercepts of the line.<br> y = 10x - 32<br> y-intercept: (<br> z-intercept: (
Rom4ik [11]

Answer:

see below

Step-by-step explanation:

y = 10x - 32

To find the x intercept set y =0 and solve for x

0 = 10x -32

Add 32 to each side

32 = 10x

Divide by 10

32/10=10x/10

3.2 = x

To find the y intercept set x =0 and solve for t

y = 10*0 -32

y= -32

5 0
3 years ago
Read 2 more answers
Other questions:
  • Part A
    9·2 answers
  • Help please? Brainliest and points!
    11·2 answers
  • Find 1/7 of less than 16​
    6·1 answer
  • the perimeter of a rectangle is 232 inches. the width is 36 inches. what is the length of the rectangle?
    8·1 answer
  • No irrational numbers are whole numbers true or false
    12·1 answer
  • An auto parts shop carries an oil filter for trucks. The annual demand for the oil filter is roughly 1200 units. The ordering co
    15·1 answer
  • -1/2 ^5 =<br><br> Solve as a Fraction
    15·2 answers
  • 2071 Old Q.No.5 Person's coefficient of skewness for a distribution is 0.4 and its coefficient of variation is 30%. If mode is 8
    14·1 answer
  • Please answer correctly !!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!
    12·1 answer
  • Ian invested $20,000 in an account paying an interest rate of 3\tfrac{1}{4}3 4 1 ​ % compounded continuously. Lauren invested $2
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!