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
scZoUnD [109]
3 years ago
10

URGENT HELP PLEASSEEEEEEEEEE!!!!!

Mathematics
1 answer:
Marina86 [1]3 years ago
8 0

Answer:

5/16

Step-by-step explanation:

Each number can happen in exactly one way (one sets the digit of tens and the other of ones).

We know that the law of divisibility by 3 is "sum of digits has to be divisible by 3", so let's examine the numbers:

11

13

15 - Yes

17

31

33 - Yes

35

37

51 - Yes

53

55

57 - Yes

71

73

75 - Yes

77

So it's 5 out of 16 options.

We could do it by examining the relation and modulus shifts with each digit, but for 16 numbers it's seriously faster to just list them.

You might be interested in
What is the slope of the line passing through the points (1, 3) and (3,9)?
Vikentia [17]

Answer:

3

Step-by-step explanation:

slop formula:

y2-y1

____

x2-x1

y2 is 9 and y1 is 3, so y2-y1 is 6

x2 is 3, x1 is 1, so x2-x1 is 2

6/2=3

4 0
3 years ago
The area of a circle 220mm in diameter is approximately how many times greater than the area of a circle 30mm in diameter?
zmey [24]
The first circle is approximately 44 times greater than the second cirle

Radius = 110 mm
110² = 10,000 mm² = Area

Radius = 15 mm
15² = 225 mm² = Area

Hope this helps!

5 0
4 years ago
Lisha is making headbands using ribbon she would like to make 12 headbands each one requires 15.5 inches of ribbon she estimates
Firlakuza [10]

Answer:

Step-by-step explanation:

Lisha is making headbands using ribbon.

each one requires 15.5 inches of ribbon

For 12 headbands Lisha need to buy ribbon = 15.5 × 12

                                                                         = 186 inches

Therefore, Lisha will need to buy 186 inches ribbon.

160 inches ribbon is not sufficient to make 12 headbands. She will need to buy 186 inches or more.

4 0
4 years ago
Read 2 more answers
If tan 3x =<img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%7D" id="TexFormula1" title="\sqrt{x}" alt="\sqrt{x}" align="absmiddle"
aliya0001 [1]

Answer:

tan3x=√3

tan3x=tan60,tan(180+60)

3x=60,240

:.x=20,80is your answer.

c=

6 0
3 years ago
Which expression is equivalent to (x^2-3x)(4x^2+2x-9)
PolarNik [594]
For # 3 and 5 you need to use the quadratic formula: 
<span>(-b +/- srt(b^2 - 4ac))/2a </span>
<span>a, b, and c are representative of this formula: ax^2 +bx + c </span>

<span>1) 2x^2+3x-9=0 </span>
<span>(2x - 3)(x + 3) = 0 </span>
<span>2x - 3 = 0, x + 3 = 0 </span>
<span>+3 +3, -3 -3 </span>
<span>2x = 3, ***x = -3*** </span>
<span>/2 /2 </span>
<span>***x = 3/2*** </span>

<span>2) 5x^2+2x=0 </span>
<span>(x)(5x + 2) = 0 </span>
<span>5x +2 = 0, ***x = 0*** </span>
<span>-2 -2 </span>
<span>5x = -2 </span>
<span>/5 /5 </span>
<span>***x = -2/5*** </span>
<span>4) 4x^2+7x-2=0 </span>
<span>(4x - 1)(x + 2) = 0 </span>
<span>4x - 1 = 0, x + 2 = 0 </span>
<span>+1 +1, -2 -2 </span>
<span>4x = 1, ***x = -2*** </span>
<span>/4 /4 </span>
<span>***x = 1/4***</span>
4 0
4 years ago
Other questions:
  • An object travels 4/5 miles in one-half hour. what is it’s speed in miles per hour ?
    9·2 answers
  • Look at the triangle show on the right. The Pythagorean Theorem states that the sum of the squares of the legs of a right triang
    7·1 answer
  • Find how many quarts of 6% butterfat milk and 1% butterfat milk should be mixed to yield 75 quarts of 3% butterfat milk.
    10·2 answers
  • Express the surface area of the box as a function of the length (x) of a side of the base.
    12·1 answer
  • Help I NEED HELP ASAAAPPP
    6·2 answers
  • PLSS HELPPP THANK YOU!!! Given: f(x) = 2x2 + x - 1 Find f(1/2). Only enter the numerical value as your answer.
    8·1 answer
  • Joelle is laying pipe for a sprinkler system before he plants his lawn. the lawn is a rectangle, 15 feet long and 8 feet wide. h
    7·1 answer
  • I need help with this please! ASAP<br> (PLEASE MULTIPLY AND SIMPLIFY COMPLETELY)
    9·2 answers
  • 3 1/5x+10 7/9-2 2/5x-10 8/9 (Simplify) I need the answer to this ASAP!
    13·1 answer
  • There is a 45% chance of snow on Friday. Thereis a 78% chance that I will go sledding if it snows. What is the probability that
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!