X- y– 22=-6 3x + 2y = -25 -4x + y - z=12 Please show work for the X, Y and Z values.

Mathematics

1 answer:

Bingel [31]2 years ago

3 0

Answer:2

Step-by-step explanation:just trust me

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Write in standard form 3.82×10⁻³ (Ex: 300) <br> Please take this seriously, ty :)

beks73 [17]

Answer:

0.00382

Step-by-step explanation:

because of the -3, you will move the decimal place to the left three units

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2 years ago

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Can someone help me with this

dmitriy555 [2]

Answer:

No, there is 3 times the amount of not yellow chalk than yellow chalk. This proves that the friend is wrong because this exceeds the given total amount of chalk, being 12. If the friend was correct there would be 24 pieces of not yellow chalk and 32 pieces of chalk in total.

The correct pieces of not yellow chalk is 9. The correct pieces of yellow chalk is 3. this can be solved by dividing the total, 12, by 4, because that is the total amount of units. This solves for one unit. Once you know the value of one unit, you can find the total of each type of chalk.

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2 years ago

Triangle XYZ is isosceles. The measure of the vertex angle, Y, is twice the measure of a base angle. What is true about triangle

NeTakaya

Answer:

a. Angle Y is a right angle.

b. The measure of angle Z is 45°.

e. The perpendicular bisector of creates two smaller isosceles triangles.

Step-by-step explanation:

Let x represent the measures of base angles X and Z. Then 2x is the measure of vertex angle Y, and the sum of angles is ...

x + x + 2x = 180°

x = 45°

2x = m∠Y = 90°

so the triangle is an isosceles right triangle which has base angles of 45°.

The perpendicular bisector of XZ is the altitude of the triangle XYZ. It creates two smaller right triangles with acute angles of 45°. Hence, those, too, are isosceles right triangles.