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3 years ago

You walk 20 meters north, then 5 meters south. what is your displacement?

1 answer:

4 0

Sry this is completely off topic, but where do you go to ask questions? I can't seem to find it. The answer is C I think

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What is 4k squared equals 5k

Nadusha1986 [10]

4k^2=5k
4k^2-5k=0
k(4k-5)=0
4k-5=0 => x2=5/4=1.25

k=1.25

6 0

4 years ago

Read 2 more answers

Are the two parabolas defined below similar or congruent or both? Justify your reasoning. Parabola 1: The parabola with a focus

Dominik [7]

Answer:

They are similar by a factor of 14

Step-by-step explanation:

From the general equation of a parabola opening up (since the directrix is on the y axis and the focus is upwards this line) the focus coordinates are:

$Focus = (h,k+p) = (0,2)$

So h=0 and k+p=2, for the directrix:

$y = k-p=-4$

solving k and p from the two equations above:

$k=-1 and p=3$

So for Parabola 1 the equation would be:

$x^{2} =4*3(y+1)$

For Parabola 2 the general equation is:

$x^{2} =4*(3/2)(y)$

here h=0, k=0, p=3/2 so focus is (0,3/2), directix is y=-3/2, they have the same orientation.

they are not congruent. For them to be similar it must comply:

$x_{1}=k x_{2}\\y_{1}=ky_{2} => (1/12)x_{1} ^{2} -1 = k(1/6)x_{2} ^{2}$

replacing $x_{1}$ and solving for k:

$(1/12)(kx_{2}) ^{2} -1 = k(1/6)x_{2} ^{2}\\ (1/12)k^{2} x_{2}^{2}-1 = k(1/6)x_{2} ^{2}\\k-12 = (12/6)=2\\k = 2+12=14\\$

They are similar by a factor of 14

8 0

3 years ago

Mariya was asked to solve StartFraction a over negative 13 EndFraction less-than-or-equal-to negative 16 and then graph the solu

lozanna [386]

Answer:

the answer is step 3 because the circle on the number line is open.

pls make mine as the Brainliest answer that would really help

8 0

4 years ago

Read 2 more answers

the are of one of the bases of the figure shown above is about 21.2 cm sq. What is the surface area, in cm sq, of the figure? ro

Ad libitum [116K]

Answer:

iateabuginthehosue

Step-by-step explanation:

qhwhywhyhwyh

8 0

3 years ago

Alexandra’s backpack weights 7 5/8 pounds. What is the weight of her backpack expressed as a decimal?

Alex777 [14]

Answer: 7.625 pounds.

Step-by-step explanation:

Given: The weight of Alexandra's backpack = $7\frac{5}{8}\ pounds$ e the given weight is in mixed fraction.

To convert it into decimal ,first we need to convert it into improper fraction.

Thus, $7\frac{5}{8}=\frac{7\times8+5}{8}=\frac{61}{8}$

Now, convert the improper fraction into decimal, by dividing numerator by denominator, we get

$7\frac{5}{8}=7.625$

Hence, the weight of her backpack in decimal = 7.625 pounds.

8 0

3 years ago