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AURORKA [14]
3 years ago
6

What is x? Options: 81, 57, 143, 66.

Mathematics
2 answers:
Sergeu [11.5K]3 years ago
5 0

Answer:103 degrees

Step-by-step explanation:

Straight line equals 180 degrees

180 degrees minus 77 degrees = 103 degrees

jeyben [28]3 years ago
3 0

Answer:

x = 103

Step-by-step explanation:

In my opinion, because x and 77 are the supplementary angles, so 180-77 = x or x+77=180. The answer should be 103......even though it's not in the options (I'm sorry).

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Solve the system of equations for x and y.<br> y = x + 5<br> y = 2x + 2
DIA [1.3K]
Answer (x,y) (3, -2)

Explanation:
using the
substitution method
y
=
x
−
5
→
(
1
)
y
=
−
2
x
+
4
→
(
2
)
since both equations are expressed in terms of x we

can equate them
⇒
x
−
5
=
−
2
x
+
4
add 2x to both sides
2
x
+
x
−
5
=
−
2
x
+
2
x
+
4
⇒
3
x
−
5
=
4
add 5 from both sides
3
x
+
5
−
5
=
4
+
5
⇒
3
x
=
9
divide both sides by 3
3
x
3
=
9
3
⇒
x
=
3
substitute this value in
(
1
)
y
=
3
−
5
=
−
2
As a check
substitute these values into
(
2
)
right
=
−
6
+
4
=
−
2
=
left
⇒
point of intersection
=
(
3
,
−
2
)
3 0
3 years ago
Jacob walks 1.5 miles north. He turns and walks 0.8 miles west. How far is he from his starting point?
Flura [38]

Answer:

1.7 miles

Step-by-step explanation:

Given that,

Jacob walks 1.5 miles north.

He turns and walks 0.8 miles west.

We need to find how far is he from his starting point. Let he is at a distance of x miles from the starting point. It can be calculated as follows :

x=\sqrt{1.5^2+0.8^2} \\\\x=1.7\ \text{miles}

Hence, he is 1.7 miles from his starting point.

7 0
2 years ago
The following polynomial can be factored using the techniques of this lesson x^2-18
Papessa [141]

Answer:

(x+3\sqrt{2})(x-3\sqrt{2})

Step-by-step explanation:

The given expression is x^2-18.

The technique that can be used to factor this polynomial is the difference of two squares.

We rewrite the two expressions as;

x^2-(\sqrt{18})^2

Recall that;

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

x^2-(\sqrt{18})^2=(x+\sqrt{18})(x-\sqrt{18})

x^2-(\sqrt{18})^2=(x+3\sqrt{2})(x-3\sqrt{2})

8 0
3 years ago
Read 2 more answers
If the range of the coordinate transformation f(x,y) = (x – 5, y – 3) is (-6,-6) and (2,-3).
lina2011 [118]

Answer:

(-2,1),(-1,2),(-3,5/3)

Step-by-step explanation:

6 0
2 years ago
∠ A and ∠ B are complementary. If m∠ B = 80°, what is the measure of ∠ A?
Stolb23 [73]
Angle A would be 10 degrees.
Complementary angles add to 90 degrees.
So 90-80=10
6 0
3 years ago
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