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SpyIntel [72]
3 years ago
15

Two lines intersect at point B, which is also the endpoint of two rays.

Mathematics
1 answer:
monitta3 years ago
6 0

Answer:

G

Step-by-step explanation:

Angle B is a 90 degree angle. It is made up of two complementary angles ,57 and 3x. Using this equation

57 + 3x = 90

We solve for x

3x=33

x=11, then since plug in 11 into 2x and we get 22.

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If a child younger than the age of about 4 or 5 was to have a large portion of their brain removed in a necessary surgery, _____
ohaa [14]

Answer:

their brains are plastic enough that cells intended to serve one function could be turned into cells that serve another function

Step-by-step explanation:

3 0
2 years ago
4.(-x 4 + 13x 5 + 6x 3 ) + (6x 3 + 5x 5 + 7x4)
grigory [225]

Answer:

140

Step-by-step explanation:

=(-4+55+18)+(18+25+28)

=69+71

=140

3 0
3 years ago
a car left town A at 10:00 am and travelled towards town B at the average speed of 70 km/h. At the same time a truck left town B
Softa [21]
The important formula to this problem is distance=rate(time) or d=rt

Now, the speed of the car is 70 km/h, and the speed of the truck is 50 km/h. It will take the two vehicles the same amount of time to meet since they both left at the same time. So, since distance equals rate times time, and t = time:

the distance of the car = 70t
the distance of the truck = 50t

Because they both left in opposite directions, and the towns are 420 kilometers apart, the equation for this would be

70t+50t=420

We now solve the equation.

70t+50t=420 \\ 120t=420 \\  \frac{120t}{120}= \frac{420}{120}  \\ t=3 \frac{1}{2}

It will take the vehicles 3 and a half hours to meet. Since we're looking for the time, 3 and a half hours from 10:00 AM is 1:30 PM.

So, the car and the truck will pass each other at 1:30 PM.
8 0
4 years ago
ABC is a straight line. which equation can be used to find the measure of the unknown angel?
miskamm [114]

Answer:

<u>A: 180 -45</u>

Step-by-step explanation:

Since it is a straight angle, it will equal 180 degrees. Since 45 is already taken, u would subtract it from 180.

180-45=135

thus, your answer is 180-45

hope I helped!!!

7 0
3 years ago
X/a+x/b=1<br>make x the subject of the formular​
monitta

Answer:

x = \frac{ab}{b+a}

Step-by-step explanation:

Given

\frac{x}{a} + \frac{x}{b} = 1

Multiply through by ab to clear the fractions

bx + ax = ab ← factor out x from each term on the left side

x(b + a) = ab ← divide both sides by (b + a)

x = \frac{ab}{b+a}

8 0
3 years ago
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