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malfutka [58]
3 years ago
10

The difference of twice a number and 3 is -21 translated

Mathematics
2 answers:
Westkost [7]3 years ago
7 0

Answer:

2x-3=-21.

2x=-21+3.

2x=-18.

x=-18/2.

x= -9.

a_sh-v [17]3 years ago
5 0

Answer:

\Huge \boxed{2x-3=-21}

Step-by-step explanation:

Let the number be x.

The difference of two values is the result from subtracting them.

2x-3=-21

Add 3 to both sides.

2x=-18

Divide both sides by 2.

x=-9

The number is -9.

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*EASY 7TH GRADE MATH*
lora16 [44]

Answer:

2880

Step-by-step explanation:

The base is made up of two triangles and a square, if that makes sense. Finding the area of a triangle is (base x height)/2.  

The base of the tiny triangle is 4 because there is 8 inches extra to the 10 inch square. <u>10 x 4 = 40.</u>

Now we have a 10 by 10 square: <u>10 x 10 = 100. </u>

So, the area of the trapezoid is 140. There are two trapezoids in this prism, so both bases are 280.

The surface area of the sides are solved by <u>12 x 50 = 600. </u>Together, the sides equal 1200.

The top is solved by <u>10 x 50 = 500.</u>

The bottom is solved by <u>18 x 50 = 900.</u>

Add them all together: 280 + 1200 + 500 + 900 = 2,880

4 0
3 years ago
If f(4) = 5, find f ^-1 (5).
Levart [38]

Answer:

  4

Step-by-step explanation:

The relation defined by f includes (4, 5). Then the inverse relation will include (5, 4).

  f^{-1}(5)=4

7 0
3 years ago
2 1/7+3/7(3X-5) =-4
KATRIN_1 [288]

Answer:

what is the question?

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
An arithmetic sequence begins as follows: a1=13 a2=19 Which of the following gives the definition of its nth term?
Otrada [13]

Answer:

the nth term of the sequence is a_n=6n+7

Step-by-step explanation:

Given : An arithmetic sequence begins as follows: a_1=13, a_2=19

To find : Which of the following gives the definition of its nth term?

Solution :

The nth term of the A.P is a_n=a+(n-1)d

The first term is a=a_1=13

The common difference is d=a_2-a_1

d=19-13=6

Substitute in the formula,

a_n=13+(n-1)6

a_n=13+6n-6

a_n=6n+7

Therefore, the nth term of the sequence is a_n=6n+7

5 0
3 years ago
5/16=n/16 help please
Vsevolod [243]
Both have the same denominator
Remove the denominator
5=n
3 0
3 years ago
Read 2 more answers
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