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3 years ago

If x = 5, y = 3 and z = 2 then xz (4y - 2z)

Mathematics

1 answer:

LenaWriter [7]3 years ago

4 0

Answer:

Step-by-step explanation:

Plug it in.

So 5 x 2 (4 x 3- 2 x 2)

5x2(12-2x2)

5x2(12-4)

5x2(8)

(10)(8)

So, the answer is 80.

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The vertex of the graph of f(x) = |x – 3| + 6 is located at ( , ).

pashok25 [27]

The vertex would be at (3, 6).

4 0

3 years ago

Determine whether the triangles are congruent. Explain your reasoning .

MArishka [77]

Answer:

The triangles are congruent

Step-by-step explanation:

The Triangles are congruent because they have the same side lengths and and angle measures.

8 0

2 years ago

These cylinders are similar. Find the volume of

Basile [38]

Answer:

$V_s=85\ cm^3$

Step-by-step explanation:

Let $V_s\ and\ V_b$ be the volumes of the smaller and bigger cylinder.

The formula for the volume of a cylinder is given by :

$V=\pi r^2 h$

As the two triangles are similar, the cube of their ratio would equal the ratio of their volume i.e.

$\dfrac{V_s}{V_b}=(\dfrac{h_s}{h_b})^3\\\\\dfrac{V_s}{V_b}=(\dfrac{3}{5})^3\\\\\dfrac{V_s}{V_b}=0.216\\\\V_s=393\times 0.216\\\\V_s=84.8\\\\or\\\\V=85\ cm^3$

So, the volume of the smaller cylinder is equal to $85\ cm^3$ .

3 0

2 years ago

Katie said,"Negative numbers are integers."What was her error?

rodikova [14]

Integer means a whole number , a number that is not fraction
Katie did not specifically said what numbers , the numbers can be fraction and it would not be called integer so that is Katie's error

4 0

2 years ago

If M=5x^2+7x-4 and N=-3x^2-4x+5, then M-N equals

Phantasy [73]

Answer:

8x² + 11x - 9

Step-by-step explanation:

M - N

= 5x² + 7x - 4 - 1(- 3x² - 4x + 5) ← distribute parenthesis by - 1

= 5x² + 7x - 4 + 3x² + 4x - 5 ← collect like terms

= 8x² + 11x - 9

4 0

2 years ago