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
Rudiy27
2 years ago
10

4.2 less than the sum of 12 and a number

Mathematics
1 answer:
zhuklara [117]2 years ago
8 0
12+a-4.2
Because sum is adding
And less than is subtracting
You might be interested in
The slope of a line is -4 and it’s y-intercept is (0,4) what is the equation of the line that is perpendicular to the first line
Rasek [7]

Original line equation: y=-4x+4

Perpendicular lines have opposite reciprocals, so the slope of the perpendicular line would be 1/4x.

Perpendicular line equation: y=1/4x+b

Plug in the coordinates that the line passes through to solve for b. Plug -8 in for x and 2 in for y.

2=1/4(-8)+b

Multiply.

2=-2+b

Add 2 to both sides.

4=b

Equation of the perpendicular line: y=1/4x+4

Hope this helps! :)

4 0
3 years ago
Please help me answer #4, #5 and #6
Salsk061 [2.6K]

Answer:

4). The Washington Monument is 169.2-m tall.

Step-by-step explanation:

4). We know this because...

person     1.8       0.7

----------  = -----  = -------

Wash.        x       65.8

We then know to cross-multiply to get:  

1.8(65.8) = 0.7x

Which simplifies down to:

118.44 = 0.7x

x = 169.2

Answer:

5). The pond is 180ft wide.

Step-by-step explanation:

5). We know this because...

90       120

-----  = -------

135        x

We then know to cross-multiply to get:

90x = 120(135)

Which simplifies down to:

90x = 16200

x = 180

Answer:

6). The height of the clock tower is 13ft 9in.

Step-by-step explanation:

6). We know this because...

person       5.5         4

----------  =  --------  = -----

clock            x          10

We then know to cross-multiply to get:

5.5(10) = 4x

Which simplifies down to:

55 = 4x

x = 13.75 (13 ft 9 in)

7 0
2 years ago
Solve for r. <br><br> √2/3r + 1 = 23
Keith_Richards [23]

Answer:

2nd option

Step-by-step explanation:

\frac{\sqrt{2} }{3} r + 1 = 23 ( subtract 1 from both sides )

\frac{\sqrt{2} }{3} r = 22 ( multiply both sides by 3 to clear the fraction )

\sqrt{2} r = 66 ( divide both sides by \sqrt{2} )

r = \frac{66}{\sqrt{2} } × \frac{\sqrt{2} }{\sqrt{2} } ( rationalising the denominator )

r = \frac{66\sqrt{2} }{2} = 33\sqrt{2}

7 0
2 years ago
Read 2 more answers
Two Parnell lines (lines, L, and L2) are intersected by a transversal (L,3). Fill in the missing angle measure for each diagram
almond37 [142]

Apply the : congruent (corresponding alternate exterior and alternate interior angles) and supplementary (consecutive interior angles) theorems

step-by-step explanation:

The property to apply here is : congruent (corresponding alternate exterior and alternate interior angles) and supplementary (consecutive interior angles)

1.h = 180°-120°=60°=e=d=a

  f=120° = c=b

2.b=180°-105°=75°=c=f=g

   a=105°=e=h

3. f=180°-36°=144°=g=c=b

   a=36°=d=h

4. a=180°-161°=19°=e=h=d

   c=161°=f=g

5. f=180°-145°=35°=g=c=b

   a=145°=d=h

6. b=180°-25°=155°=c=f=g

    25°=d=e=h

Learn More

Angles :brainly.com/question/13209798

Keywords: parallel lines, intersect, transversal, angle

#LearnwithBrainly

7 0
3 years ago
Square root of 8 times square root of 32
fredd [130]

in decimal form it is 45.2

in exact form it is 32 squareroot 2

5 0
2 years ago
Other questions:
  • How do you correctly graph a system of inequalities
    5·1 answer
  • What expression represents 6 more than x
    6·1 answer
  • Please help me with this problem
    7·2 answers
  • Please help!!!<br><br> This is my measurement homework
    11·1 answer
  • A recipe uses 3 cups of flour and 2 cups of sugar write the ratio as a fraction
    5·2 answers
  • A veterinarian has 6 cats and 10 dogs in a kennel. What is the ratio of cats to dogs?
    13·2 answers
  • Maria is coloring in triangles,squares and circles using 3 colors red blue and yellow or Maria only uses a color on each shape o
    6·1 answer
  • 1. What values for θ (0≤θ≤2π) satisfy the equation? 2cosθsinθ - root3sinθ = 0
    7·1 answer
  • What is the least common multiple of 4 and 8? Enter your answer in the box.
    14·1 answer
  • ASAP PLS I NEED IT AND TY
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!