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3 years ago

Draw and label a tape diagram to represent the following (choose two to do):

Mathematics

1 answer:

Aloiza [94]3 years ago

6 0

Answer:

ask ur teacher

Step-by-step explanation:

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I need help with three and four

mart [117]

Answer:

3: $a^{2}+2ab+b^{2}$

4: $8x^{3} -12x^{2}+6x-1$

Step-by-step explanation:

Question 3 can be re-written as:

$(a+b)(a+b)$

which equals:

$a^{2}+2ab+b^{2}$

Question 4 can be re-written as:

$(2x-1)(2x-1)(2x-1)$

Doing the first 2 brackets gives us:

$(4x^{2} -4x+1)(2x-1)$

Expanding these two:

$8x^{3} -4x^{2} -8x^{2} +4x+2x-1$

Simplifying it:

$8x^{3} -12x^{2}+6x-1$

4 0

2 years ago

Read 2 more answers

I NEED HELP PLS I WILL MARK BRAINLIEST

ANEK [815]

Answer:

$\approx 11.2\:\mathrm{in}$

Step-by-step explanation:

The swing of the tip of pendulum is creating an arc. The question is actually asking for the length of this arc. The length of an arc is given by $2r\pi\cdot \frac{\theta}{360}$ , where $r$ is the radius of the circle and $\theta$ is the angle of the arc.

In this problem, we're given:

$\theta = 40^{\circ},\\r=16$

Substituting given values, we get:

$2\cdot 16\cdot \pi \cdot \frac{40}{360}=32\pi\cdot \frac{1}{9}\approx \boxed{11.2\:\mathrm{in}}$

8 0

3 years ago

What is the absolute value of 6.7

Aleonysh [2.5K]

The absolute value of 6.7 is 6.7

6 0

3 years ago

Read 2 more answers

Can someone help me with 9 and 10 please

AfilCa [17]

It would cross the y-axis at 2 and it would cross the x-axis at -2

Explanation- x is the horizontal line and the y is the vertical line. Basically whichever number the line crosses on the x-axis line or the y-axis line would be your answer.

Hope this helps(:

3 0

3 years ago

Alex has c chocolates, and d drinks . Miley has four fewer chocolates than Alex , but twice as many drinks. Write an expression

zaharov [31]

Answer:

I think it would be (C - 4) + 2D

Step-by-step explanation:

If she has four less drinks, you subtract 4 from the original, and of she has twice as many drinks, you double the amount of the original

6 0

3 years ago