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3 years ago

7

Amber's teacher asked her to explain the division problem -27/3. Which choice gives the correct explanation?

2 answers:

aleksley [76]3 years ago

7 0

I would have to say that the answer is A.

ryzh [129]3 years ago

4 0

Answer:

A.three groups of nine negatives.

Step-by-step explanation:

Amber's teacher asked her to explain the division problem $\frac{-27}{3}$

We get the answer as: -9

We can also say that $(-9)(3)=-27$ , means three groups of (-9) is -27.

We can further write -27 as : $(-9)+(-9)+(-9)$

Therefore, the answer is :A.three groups of nine negatives.

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How to find surface area of prisms

s344n2d4d5 [400]

Answer:

Step-by-step explanation:

The formula for the surface area of a prism is obtained by taking the sum of (twice the base area) and (the lateral surface area of the prism). The surface area of a prism is given as S = (2 × Base Area) + (Base perimeter × height) where "S" is the surface area of the prism.

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2 years ago

What point is plotted on the graph? (9, 9) (9, 8) (8, 9) (8, 8)

elixir [45]

Answer:

It's 9,8

Step-by-step explanation:

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3 years ago

Read 2 more answers

Find the value of x for which ABCD must be a parallelogram.<br> (4x - 1)<br> (x + 38)°

mart [117]

Answer:

answer is 13

Step-by-step explanation:

13+38=51

4*13-1=51

3 0

3 years ago

Y=x2-2x-5<br> Change to vertex form

MaRussiya [10]

The vertex form is $y=(x-1)^{2} -6$

Step-by-step explanation:

The given equation $y=x^{2} -2x-5$ is a parabola. The vertex of the parabola is of the form $y=ax^{2} +bx+c$

The parameters of the parabola are $a=1, b=-2$ and $c=-5$

The vertex of the x-coordinate is given by $x=\frac{-b}{2a}$

Thus, substituting the values of a and b in $x=\frac{-b}{2a}$ , we get,

$\begin{aligned}x &=\frac{-(-2)}{2(1)} \\&=\frac{2}{2} \\x &=1\end{aligned}$

Now, substituting $x=1$ in $y=x^{2} -2x-5$ , we get,

$\begin{aligned}y &=1^{2}-2(1)-5 \\&=1-2-5 \\y &=-6\end{aligned}$

Thus, the vertex is $(1,-6)$

The equation of parabola to be in vertex form is $y=a(x-h)^{2} +k$

where a is the coefficient of $x^{2}$ , h is vertex of the x-coordinate and k is the vertex of the y-coordinate.

Hence, $a=1, h=1$ and $k=-6$

Thus, substituting the values in the equation of the vertex form,

$y=1(x-1)^{2} -6\\y=(x-1)^{2} -6$

Hence, the vertex form is $y=(x-1)^{2} -6$

8 0

4 years ago

Which equation matches the hanger?<br> O X+3=6<br> 0 3x = 6<br> 0 6 = 3x +1<br> 2x = 6

natima [27]

Answer:

B. 3x = 6

Step-by-step explanation:

The left side of a hanger is on the left side of the equation, and the right side of a hanger is on the right side of the equation.

There are 3 x's on the left side, so the left side is 3x

The right side shows 6 unit boxes, so the right side is (1 * 6), or 6.

As a result, the equation is 3x = 6, which is B.

7 0

3 years ago