All categories

2 years ago

Can someone explain this to me:)

Mathematics

2 answers:

Ostrovityanka [42]2 years ago

7 0

Answer:

B) m = 2 , b = -3

Step-by-step explanation:

b = y-intercept

The y-intercept is -3

b = -3

m = slope

The slope is 2

m = 2

algol132 years ago

5 0

I think m = x and b = y, or vice versa

You might be interested in

The ratio of boys to girls at a movie is 3:4 . If there are 16 girls , how many boys are at the movie?

Annette [7]

Answer:

12 boys

Step-by-step explanation:

Set up a proportion: $\frac{3}{4} = \frac{x}{16}$
Cross multiply, then divide: 3 × 16 = 48, 48 ÷ 4 = 12

I hope this helps!

8 0

2 years ago

Read 2 more answers

The radius of a spherical balloon is measured as 20 inches, with a possible error of 0.03 inch. Use differentials to approximate

soldi70 [24.7K]

Answer:

a) $V = 33510.322\,in^{3}$ , b) $A_{s} = 5026.548\,in^{2}$ , c) $\% V = 0.450\,\%$ , $\%A_{s} = 0.300\,\%$ .

Step-by-step explanation:

The volume and the surface area of the sphere are, respectively:

$V = \frac{4}{3}\pi \cdot r^{3}$

$A_{s} = 4\pi \cdot r^{2}$

a) The volume of the sphere is:

$V = \frac{4}{3}\pi \cdot (20\,in)^{3}$

$V = 33510.322\,in^{3}$

b) The surface area of the sphere is:

$A_{s} = 4\pi \cdot (20\,in)^{2}$

$A_{s} = 5026.548\,in^{2}$

c) The total differentials for volume and surface area of the sphere are, respectively:

$\Delta V = 4\pi\cdot r^{2}\,\Delta r$

$\Delta V = 4\pi \cdot (20\,in)^{2}\cdot (0.03\,in)$

$\Delta V = 150.796\,in^{3}$

$\Delta A_{s} = 8\pi\cdot r \,\Delta r$

$\Delta A_{s} = 8\pi \cdot (20\,in)\cdot (0.03\,in)$

$\Delta A_{s} = 15.080\,in^{2}$

Relative errors are presented hereafter:

$\%V = \frac{\Delta V}{V}\times 100\%$

$\%V = \frac{150.796 \,in^{3}}{33510.322\,in^{3}}\times 100\,\%$

$\% V = 0.450\,\%$

$\% A_{s} = \frac{\Delta A_{s}}{A_{s}}\times 100\,\%$

$\% A_{s} = \frac{15.080\,in^{2}}{5026.548\,in^{2}}\times 100\,\%$

$\%A_{s} = 0.300\,\%$

4 0

2 years ago

Identify the vertex of the graph. Tell whether it is a minimum or maximum.

Bad White [126]

B the highest point is at three points 3,1 and as the graph has no higher value of point it is a maximum therefore B

3 0

2 years ago

The length of a garden is 5m greater than the width. the area is 66m^2. Find the dimensions of the garden.

11Alexandr11 [23.1K]

W^2+5w-66=0
Factor
(w+11)(w-6)=0

w+11=0
w=-11 (not possible - cant have negative length

w-6=0
w=6

L(6)=66
L=11

Width = 6
Length = 11

8 0

3 years ago

Solve the following problem, round your answer to the nearest 2 decimal places if needed.

blondinia [14]

Applying the midsegment theorem, the value of x = 5

Recall:

The midsegment theorem of a triangle states that the length of the mid-segment (DE) which is parallel to the third side (AC), is half the length of the third side AC of triangle BAC.

Thus:

DE = 1/2(AC)

Substitute

2x - 3 = 1/2(x + 9)

Multiply both sides by 2

2(2x - 3) = x + 9

4x - 6 = x + 9

Combine like terms

4x - x = 6 + 9

3x = 15

Divide both sides by 3

x = 5

Therefore, applying the midsegment theorem, the value of x = 5

Learn more about the midsegment theorem on:

brainly.com/question/7423948

5 0

2 years ago

Can someone explain this to me:)​

Can someone explain this to me:)