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olchik [2.2K]
3 years ago
10

Solve for the variable 3x=-7

Mathematics
1 answer:
Allisa [31]3 years ago
8 0
3x = -7   Divide both sides by 3. 3 goes into seven twice with one-third left                   over. Since it's a negative seven, the answer will also be negative.
x = -2\frac{1}{3}
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Which is greater 4/5 or 3/4? Explain how you know
GuDViN [60]

Answer:

4/5>3/4

Step-by-step explanation:

4/5=0.8

3/4=0.75

4/5 is grater than 3/4 by 0.5

I hope this helps!

6 0
3 years ago
What is the answer to 7-x²
nekit [7.7K]

Answer:

7-1x^2

Step-by-step explanation:

5 0
2 years ago
How do I do 8b(ii) ? Please help me thank you!
Mila [183]
Step One
======
Find the length of FO (see below)

All of the triangles are equilateral triangles. Label the center as O
FO = FE = sqrt(5) + sqrt(2)

Step Two
======
Drop a perpendicular bisector from O to the midpoint of FE. Label the midpoint as J. Find OJ

Sure the Pythagorean Theorem. Remember that OJ is a perpendicular bisector.

FO^2 = FJ^2 + OJ^2
FO = sqrt(5) + sqrt(2)
FJ = 1/2 [(sqrt(5) + sqrt(2)]                                           \
OJ = ??

[Sqrt(5) + sqrt(2)]^2 = [1/2(sqrt(5) + sqrt(2) ] ^2 + OJ^2
5 + 2 + 2*sqrt(10) = [1/4 (5 + 2 + 2*sqrt(10) + OJ^2
7 + 2sqrt(10) = 1/4 (7 + 2sqrt(10)) + OJ^2      Multiply through by 4
28 + 8* sqrt(10) = 7 + 2sqrt(10) + 4 OJ^2    Subtract 7 + 2sqrt From both sides
21 + 6 sqrt(10) = 4OJ^2   Divide both sides by 4
21/4 + 6/4* sqrt(10) = OJ^2
21/4 + 3/2 * sqrt(10) = OJ^2 Take the square root of both sides.
sqrt OJ^2 = sqrt(21/4 + 3/2 sqrt(10) )
OJ = sqrt(21/4 + 3/2 sqrt(10) )

Step three
find h
h = 2 * OJ
h = 2* sqrt(21/4 + 3/2 sqrt(10) ) <<<<<< answer.


7 0
3 years ago
A rectangular pool is 10 meters wide and 16 meters long.What is the area of the pool? What is asked?What are given?What is/are t
Morgarella [4.7K]
<h3>Answer:</h3>

A=160 m

<h3>Solution:</h3>
  • The formula for the Area of a rectangle is:
  • A=LW
  • In the above formula, L stands for the length and W stands for the width.
  • We are given:
  • L=16 m
  • W=10 m
  • We are asked to find the area of the rectangular pool.
  • The operation that we're going to use here is:
  • Multiplication.
  • Multiply:
  • A=16*10
  • A=160 m

Hope it helps.

Do comment if you have any query.

7 0
3 years ago
Read 2 more answers
The football team gained 8 yards on the first play. Lost 6 yards on the next. Gained 3 yards on the
Aliun [14]
The difference is negative seven I believe
5 0
2 years ago
Read 2 more answers
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