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zheka24 [161]
3 years ago
5

Write the word sentence as an equation. Then solve the equation.

Mathematics
1 answer:
Nana76 [90]3 years ago
7 0

Answer:

see below

Step-by-step explanation:

9 is the difference of a number n and 7.

Let's break this down.

"is" represents the equal sign.

"the difference" represents subtraction.

9 = n - 7

Now let's solve the equation.

9 = n - 7

Add 7 to both sides.

16 = n

Hope this helps!

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Which expression is equivalent to (7x+9y)2
Arada [10]

Answer:

49x^2+126xy+81y^2

Step-by-step explanation:

Use the square of a binomial theorem

(a+b)^2= a^2+2ab+b^2

Now expand the given equation:

(7x+9y)^2=49x^2+126xy+81y^2

Hope this helps :)

Have a great day!

6 0
3 years ago
Using the Pythagorean Theorem, find the length of a leg of a right triangle if the other leg is 8 ft long and the hypotenuse is
tatyana61 [14]
A^2+8^2=10^2
a^2+64=100
a^2=36
a=6

B.6FT
4 0
2 years ago
1. Given the information below, can we prove AABC = ADEF? If yes, which postulate or
Degger [83]

Answer:

C. Yes, we can prove the triangles congruent by SAS.

Step-by-step explanation:

In ∆ABC and ∆DEF,

BC = EF = 6 cm

angle A = angle D = 22°

AC = DF = 14 cm

Hence, the triangles are congruent.

( by SAS congruency criterion )

7 0
3 years ago
You are given the steps for constructing the bisector of an angle using a compass and a straightedge. Arrange the steps in the c
Mamont248 [21]

Step-by-step explanation:

position your compass at point A and using the same distance mark arcs on line AB(mark the point it meets the line D)and AC(mark the meeting point of the arc and the line E).Place your compass at D and draw an arc at the middle of the angle,using the same measurements position your compass at point E and draw an arc.Where the two arcs meet label F using a ruler draw a straight line from F to meet point A.

Note;the width of the compass when making the arcs should be the same always

3 0
3 years ago
State the domain and range and determine if it's a function?<br> Domain:<br> Range:<br> Function?
kramer

Step-by-step explanation: Let's first write the coordinates of each point.

When finding the coordinates of a

given point, be very careful with your signs.

On the x-axis, left means negative and right means positive

and on the y-axis, down means negative and up means positive.

The points in this problem are (-1, -2), (4, -2), (1, 1), (2, 3).

The domain is the set of all x-coordinates.

So here, the domain or D = {-1, 4, 1, 2}.

The range is the set of all y-coordinates.

So here, the range is {-2, 1, 3}.

Notice that I only listed the 1 once.

We only need to mention it once in our range.

Finally, let's determine if it' a function.

If none of the x-coordinates repeat, it's a function.

Since none of them do repeat, it's a function.

8 0
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