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Evgesh-ka [11]
2 years ago
8

KA AGAIN ( 2 pdfs) correct answers only

Mathematics
2 answers:
Nat2105 [25]2 years ago
5 0

Answer:

the answer is B

Step-by-step explanation:

Hope this helps

Reil [10]2 years ago
4 0

Answer:

B

Step-by-step explanation:

To find the constant of proportionality between y and x, divide  \frac{y}{x} for all given values of the chart. If you get the same number, then that is the constant. If they are all different numbers, then one does not exist for that function.

Using the method above, you should get:

Chart A = 2/5

Chart B = 1/5 (Correct Answer!)

Chart C = N/A

Hope this helps!

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5. Maria is tracking the number of miles she runs in one week. She is using the track at her
777dan777 [17]

Answer:

0.00310 miles

Step-by-step explanation:

Maria runs 5 m each week. We need to find how miles she run. It means we need to convert meters to miles. The relation between meter and yards is as follows :

1 meter = 1.09361 yards

Also, 1 mile = 1760 yards

It means,

1 mile = 1609.34 m

1 m = (1/1609.34) miles

5\ m=\dfrac{5}{1609.34}\ \text{miles}\\\\=0.00310\ \text{miles}

So, she will cover 0.00310 miles.

6 0
2 years ago
A cardboard box without a lid is to be made with a volume of 4 ft 3 . Find the dimensions of the box that requires the least amo
Blababa [14]

Answer:

<h2><em>2ft by 2ft by 1 ft</em></h2>

Step-by-step explanation:

Total surface of the cardboard box is expressed as S = 2LW + 2WH + 2LH where L is the length of the box, W is the width and H is the height of the box. Since the cardboard box is without a lid, then the total surface area will be expressed as;

S  = lw+2wh+2lh ... 1

Given the volume V = lwh = 4ft³ ... 2

From equation 2;

h = 4/lw

Substituting into r[equation 1;

S = lw + 2w(4/lw)+ 2l(4/lw)

S = lw+8/l+8/w

Differentiating the resulting equation with respect to w and l will give;

dS/dw = l + (-8w⁻²)

dS/dw = l - 8/w²

Similarly,

dS/dl = w  + (-8l⁻²)

dS/dw = w - 8/l²

At turning point, ds/dw = 0 and ds/dl = 0

l - 8/w² = 0 and w - 8/l² = 0

l = 8/w²  and w =8/l²

l = 8/(8/l² )²

l = 8/(64/I⁴)

l = 8*l⁴/64

l = l⁴/8

8l = l⁴

l³ = 8

l = ∛8

l = 2

Hence the length of the box is 2 feet

Substituting l = 2 into the function l = 8/w² to get the eidth w

2 = 8/w²

1 = 4/w²

w² = 4

w = 2 ft

width of the cardboard is 2 ft

Since Volume = lwh

4 = 2(2)h

4 = 4h

h = 1 ft

Height of the cardboard is 1 ft

<em>The dimensions of the box that requires the least amount of cardboard is 2ft by 2ft by 1 ft</em>

8 0
3 years ago
I WILL MARK BRAINLIEST
mina [271]

Answer/Step-by-step explanation:

The angle CPA must be 90° because AB is a straight line and it is a measure of 180° and 180°-90° = 90°

6 0
2 years ago
Can someone Please help me on this question!?
olganol [36]
<h3>Answer:</h3>

B. |2x + 1|  + 1

<h3>Step-by-step explanation:</h3>

( |2x + 1|  + 3) - 2

|2x + 1|  + 3 - 2

|2x + 1|  + (3 - 2)

=  |2x + 1|  + 1

3 0
2 years ago
The number of jobs for nurses is expected to increase by 711,900 between 2010 and 2020. during the same decade, the number of jo
Brrunno [24]

The Ratio would be 43:100.

Lets simplify the problem,

Expected increase of nurses = 711900

Expected increase of physicians = 168300

Ratio = Expected increase of nurses / Expected increase of physicians

Ratio = 711900 / 168300

= 43/100

Ratio = 43:100

Learn more about Ratio on:

brainly.com/question/255469

#SPJ4

3 0
1 year ago
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