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3 years ago

What is the value of X in 1.2÷0.3= X÷0.4

Mathematics

2 answers:

sashaice [31]3 years ago

8 0

$1.2 \div .3 = 4$
$4 = x \div .4$
multiply both sides by .4 to isolate the x variable.

$4 \times .4 = x$

x = 1.6

Anna007 [38]3 years ago

8 0

X=1.6 because you have to divide 0.3 on each side then calculate the math and equal to x=1.6

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Please Help

Hitman42 [59]

ANSWER

$( {y - 8)}^{2} = - 28(x + 5)$

EXPLANATION

The given parabola has directrix x=2.

This implies that, the parabola is opens in the direction of the negative x-axis because it must open in a negative direction to the directrix.

The equation of such parabola is of the form:

$( {y - k)}^{2} = 4p(x - h)$

where (h,k)=(-5,8) is the vertex.

$|p| = | - 2 - 5| = 7$

$p = \pm7$

But the parabola opens to the left.

p=-7

The equation now becomes

$( {y - 8)}^{2} = 4( - 7)(x - - 5)$

$( {y - 8)}^{2} = - 28(x + 5)$

4 0

3 years ago

Find the % of change. Original price: $185 New price: $160

mojhsa [17]

Answer:

-13.51

Step-by-step explanation:

work out the difference (increase) between the two numbers you are comparing. Then: divide the increase by the original number and multiply the answer by 100. % increase = Increase ÷ Original Number × 100.,

so, -13.51

8 0

2 years ago

Please help, will give brainiest IF correct !! 40 points

erastova [34]

Answer:

nine over eleven because its ez

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Help plz i need a anwser

Blababa [14]

Answer:

Your answer would be B: $25.20

24 x 5% is 1.2

$24 + 1.2 is 25.2

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

You bike 1 mile the first day of your training, 1.3 miles the second day, 1.9 miles the third day, and 3.1 miles the fourth d

JulsSmile [24]

Answer:

19.9 miles

Step-by-step explanation:

In this problem we have:

$d_1=1 mi$ is the distance travelled during the 1st day

$d_2=1.3 mi$ is the distance travelled during the 2nd day

$d_3=1.9 mi$ is the distance travelled during the 3rd day

$d_4=3.1 mi$ is the distance travelled during the 4th day

We notice that the difference between the distance travelled on the (n+1)-th day and the distance travelled on the n-th day doubles every day. In fact:

$d_2-d_1=0.3\\d_3-d_2=2\cdot 0.3 = 0.6\\d_4-d_3=2\cdot 0.6 = 1.2$

Which can be rewritten using the general formula:

$d_{n+1}-d_n=2(d_n-d_{n-1})$

This means that

$d_{n+1}=d_n+2(d_n-d_{n-1})$

By applying this formula recursively, we can find the 7th term, which is the distance travelled on the 7th day:

$d_1=1\\d_2=1.3\\d_3=1.9\\d_4=3.1\\d_5=3.1+2\cdot 1.2=5.5\\d_6=5.5+2\cdot 2.4=10.3\\d_7=10.3+2\cdot 4.8=19.9 mi$

So, the distance travelled on the 7th day is 19.9 miles.

7 0

3 years ago