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Stella [2.4K]
3 years ago
12

UYK

Mathematics
1 answer:
Scrat [10]3 years ago
6 0

Answer:

Step-by-step explanation:

Area = height × side

 

21   = 3 * side

 

side = 7 cm

The side of a rhombus is half the longer diagonal

longer diagonal = 2*side =2*7=14cm

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What is the value of the first term in the following arithmetic sequence?
Elden [556K]

Answer:

  -9

Step-by-step explanation:

The usual definition of the English word "first" applies.

5 0
4 years ago
Evaluate (-28) + 38 + (-12). EXPLAIN YOUR ANSWER, I KNOW IT’S -2, BUT WHY? How do I get -2? I am asking you to explain how you s
kipiarov [429]

Answer:

If the sign before the no. is same then they will get added and the resultant will have the same sign too.

Since before 28 and 12 , both of them have the negative sign , they will get added and the sign of their resultant will be negative too.

So , -28-12 = -40

Now, if the sign before the no.s are different then there will be subtraction, and the sign before the highest no. will be the sign of the resultant.

So,( -28)+38+(-12)

= -28+38-12

= -40+38

= -2

We know that 40> 38

sign before 40 is negative, therefore, their resultant i.e 2 will also get the negative sign

I hope this helps you...

3 0
3 years ago
Jason bought a table for $98.00. The finance charge was $12 and she paid for it over 10 months. (Finance Ch arg e #Months)(12) t
Natali5045456 [20]

Answer:

Just took the test, the answer is  14.7%

Step-by-step explanation:

3 0
3 years ago
Show your work. (x^2 + 2x +3)(x^2 - 2x -2)
Fudgin [204]
I got:
by multiplying each factor....
x^4 - 2x^3 - 2x^2 + 2x^3 - 4x^2 - 4x + 3x^3 - 6x - 6
then combining like terms....
answer is:
x^6 - 3x^2 - 10x - 6
5 0
4 years ago
If 2x+ y= 10 and y=3x find the value of both x and y
Marat540 [252]

Given the set of equations:

2x + y = 10

y = 3x

Let's solve for x and y.

Here, let's use substitution method.

Substitute 3x for y in equation 1:

2x + y = 10

2x + 3x = 10

5x = 10

Divide both sides by 5:

\begin{gathered} \frac{5x}{5}=\frac{10}{5} \\  \\ x=2 \end{gathered}

In equation 2, substitute 2 for x to find y.

y = 3x

y = 3(2)

y = 6

Therefore, we have:

x = 2 and y = 6

ANSWER:

x = 2, y = 6

6 0
1 year ago
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