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Tatiana [17]
3 years ago
11

What is the expression for 7 squared

Mathematics
2 answers:
Andrew [12]3 years ago
8 0

Answer: 7^{2}

VLD [36.1K]3 years ago
7 0

Answer:

To simplify your expression using the Simplify Calculator, type in your expression like 2(5x+4)-3x. The simplify calculator will then show you the steps to help you learn how to simplify your algebraic expression on your own.

Step-by-step explanation:

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Find x on this special right triangle
tigry1 [53]

Answer:

The answer is 7

Step-by-step explanation:

We know than Tan45=1

Tanx=opp/adj

tan45=y/(7\sqrt{2})/2

Thus y=7\sqrt{2}/2

We know by pythagoras theorem that hyp^2=side^2+side^2

x^{2}=((7\sqrt{2} /2)^{2}+(7\sqrt{2}/2)^{2}

x^{2}=(49(2)/4)+(49(2)/4)

x^{2}=(49/2)+(49/2)

x^{2}=(98/2)

x^{2}=49

x=7

6 0
3 years ago
Plzzzz help don’t understand
Diano4ka-milaya [45]

5s + 5l = 155, 10s + 12l = 346

Solve for s in the first equation.

5s = 155 - 5l

s = 31 - l

Substitute s into the second equation.

10(31 - l) + 12l = 346

310 - 10l + 12l = 346

310 + 2l = 346

2l = 36

l = 18

Substitute l into the first equation.

5s + 5(18) = 155

5s + 90 = 155

5s = 65

s = 13

s = 13, l = 18

8 0
3 years ago
Read 2 more answers
Helpp pls it’s 25 points
rjkz [21]

Answer:

A and 3  I believe

8 0
3 years ago
The difference between twice a number, x, and a smaller number, y, is 3. The sum of twice the number and the smaller
azamat

Answer:

y=2x+3 and y=-2x-3

Step-by-step explanation:

First situation:

2x-y=3

making y subject

y=2x+3

Second situation:

2x+y=-3

making y subject

y=-2x-3

7 0
2 years ago
Directions: Solve for x, then find each angle measure.
anyanavicka [17]
It’s the second one
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3 years ago
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