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3 years ago

8

Explain why you can use subtraction to solve a division problem.

1 answer:

eduard3 years ago

7 0

Subtraction is finding the difference between two numbers whereas division is putting numbers into equal pairs or undoing multiplication ( if that helps ) So... If they say divide 6 by 2 they mean put six into equal pairs of 2 which would equal 3 E.g.:- ( there are 3 pairs of six cars in twos ) You can't use subtraction because that will just find the number difference of 6 and 2 which is 4 Hope that wasn't complicated

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What are the coordinates of the vertex of the parabola described by the equation below? y=7(x+5)^2-4

Ipatiy [6.2K]

Answer:

$y= 7(x+5)^2 -4$

The vertex form for a parabola is given by this expression:

$y = a(x-h)^2 +k$

By direct comparison we see that for this case:

$a = 7, h = -5 and k=-4$

And we know from the general expression that the vertex is:

$V= (h,k)$

So then the vertex for this case is:

$V= (-5,-4)$

Step-by-step explanation:

For this case we have the following function:

$y= 7(x+5)^2 -4$

And we need to take in count that the vertex form for a parabola is given by this expression:

$y = a(x-h)^2 +k$

By direct comparison we see that for this case:

$a = 7, h = -5 and k=-4$

And we know from the general expression that the vertex is:

$V= (h,k)$

So then the vertex for this case is:

$V= (-5,-4)$

4 0

3 years ago

Given that the measurement is in centimeters, find the area of the circle to the nearest tenth. (Use 3.14 for π) the radius is 3

Fofino [41]

Answer:

Area of the circle = $28.26cm^2$

Step-by-step explanation:

Radius of the circle= 3 cm

Area of the circle= $\pi *r^2$

As,

$\pi =\frac{22}{7}=3.14$

Putting the values in the formula:

Area of the circle= $3.14*3*3$

$=3.14*9\\\\=28.26cm^2$

The area of the circle is $28.26cm^2$

3 0

4 years ago

0.33333333×3.14×8×8×18

RSB [31]

Answer:

1205.75999

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

(x + 6)(x + 2) = 60?

Salsk061 [2.6K]

Answer:

x^3=6

Step-by-step explanation:

x(x+2)+6(x+2)=60

x^2+2x +6x +12=60

5 0

3 years ago

A compact disc cover is 14 centimeters (cm) long, 12.4cm wide, and 1 cm deep. Which of the following represents the surface area

bogdanovich [222]

Answer:

SA= 2(l x w) |+2(l x h)+2(h x w)

= 2(14 x 12.4) +2(14 x 1)+2(1x 12.4)

=2(173.6)+2(14)+2(12.4)

=347.2|+28+24.8

Surface area is: 400 cm square

Step-by-step explanation:

4 0

3 years ago