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harina [27]
3 years ago
14

Please help I don't understand.

Mathematics
2 answers:
Pavel [41]3 years ago
7 0

Answer:

.20

Step-by-step explanation:

add them up and divide them amount of twins by the sum

Kay [80]3 years ago
6 0
I don’t really know sorry
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What is the image of (-1,-2) after a reflection over the line y = x?
wolverine [178]

Answer:

what line is it reflecting over?

If it's reflected over the Y axis then (1, -2)

If it reflected over the X axis then (-1, 2)

If it's reflected over both axis then (1, 2)

Step-by-step explanation:

May I have brainliest please? :)

8 0
3 years ago
Read 2 more answers
Find the measures of the interior angles of the triangle.
jeka94

Answer:

∠A = 30°

∠B = 60°

∠C= 90°

Step-by-step explanation:

This is a right triangle, you can see it mainly by the red square in C, and it is always used to mark 90 degrees.

Knowing that, you now know <em>∠C is 90°</em>

Now, to find ∠B, you should use the following equation:

  • A+B+C = 180°

This means that the sum of the three angles of a triangle gives 180. ALWAYS. So to find the missing angle, ∠B, do the following:

Fill the values of the equation with the angles you now know:

  • 30° + B + 90° = 180

Solve the equation, passing the 30° and 90° to the other side of the equal sing with Inverse Operation:

  • B = 180° - 30° - 90°

<em>B = 60</em>

<em>Hope it helps!!</em>

3 0
3 years ago
PLEASE HELP WILL BRAINLIST (20 POINTS)
Delvig [45]

Answer:

x=2/3+1/3\sqrt{10}

Step-by-step explanation:

Let's solve your equation step-by-step.

3x2−4x−2=0

For this equation: a=3, b=-4, c=-2

3x2+−4x+−2=0

Step 1: Use quadratic formula with a=3, b=-4, c=-2.

3 0
3 years ago
Can you help me solve that
yuradex [85]

Answer:2.6



Step-by-step explanation:

Use your graphing calculator of you have one and if you don't you can find one online and plug in the equation and find the intersection . If you get 2.5571 round it to the nearest tenth and you should get 2.6


6 0
4 years ago
Read 2 more answers
The area of a trapezium is 800 cm2
svlad2 [7]

Answer:

The distance between the parallel sides is 20cm.

Step-by-step explanation:

Area of a trapezoid:

A=\frac{a+b}{2}\times h

where a and b are the 2 bases, and h is the height. The value we're trying to find here is the height.

3 of the 4 variables in this equation are already given:

A = 800

a = 48

b = 32

Just plug those in and solve for h:

\rightarrow 800=\frac{48+32}{2}\times h\\\rightarrow 800=\frac{80}{2}\times h\\\rightarrow 800=40\times h\\\rightarrow 800\div40=h\\\rightarrow h=20

5 0
3 years ago
Read 2 more answers
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