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3 years ago

Sammi wanted to create a dot plot based on this tally chart.

Mathematics

2 answers:

Phantasy [73]3 years ago

8 0

Answer:

Option B:

Sammi made a mistake in Step 2 because he chose a title without knowing if the table represents the number of hours read per week.

Step-by-step explanation:

A dot plot type of a problem.

Sammi forgot to put the corresponding title for the dots such as whether those were the correspondents name or a universal label such as college students. This will make the graph have a mistake in some places. Sammi should include the label that corresponds or represents the dot.

KATRIN_1 [288]3 years ago

3 0

Answer:

It's B

Step-by-step explanation:

I got it right

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andreev551 [17]

Answer:

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Step-by-step explanation:

Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.

7 0

3 years ago

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The volume of a sphere is 2145 cubic centimeters. What is the approximate diameter of this sphere?

eimsori [14]

Answer:

d = 2(40.11 cm) = 80.22 cm

Step-by-step explanation:

The formula for volume of a sphere is V = (4/3)πr³

and here V = (4/3)πr³ = 2145 cm³

Let's simplify this equation by multiplying both sides by (3/4); this will cause (4/3) to disappear:

(3/4)(4/3)πr³ = (3/4)2145 cm³, or

r³ = 1608.75 cm³

Taking the cube root of both sides, we get:

r = 40.11 cm

Remembering that diameter = 2 times radius, we calculate the diameter:

d = 2(40.11 cm) = 80.22 cm

6 0

4 years ago

Determine whether 128 feet, 136 feet, and 245 feet can be the lengths of the sides of a triangle.

stich3 [128]

Yes they can because the two smaller numbers add up to be more than the bigger number

5 0

4 years ago

Please help asap!!! i dont understand it

pshichka [43]

Answer:

Step-by-step explanation:

A perpendicular bisector, intersects a line at its mid point and is perpendicular to it.

Calculate slope m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (- 7, 1) and (x₂, y₂ ) = (9, 13)

m = $\frac{13-1}{9-(-7)}$ = $\frac{12}{9+7}$ = $\frac{12}{16}$ = $\frac{3}{4}$

Given a line with slope m then the slope of a line perpendicular to it is

$m_{perpendicular}$ = - $\frac{1}{m}$ = - $\frac{1}{\frac{3}{4} }$ = - $\frac{4}{3}$ ← slope of perpendicular bisector

Given endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint is

( $\frac{x_{1}+x_{2} }{2}$ , $\frac{y_{1}+y_{2} }{2}$ )

using (x₁, y₁ ) = (- 7, 1) and (x₂, y₂ ) = (9, 13) , then

midpoint = ( $\frac{-7+9}{2}$ , $\frac{1+13}{2}$ ) = ( $\frac{2}{2}$ , $\frac{14}{2}$ ) = (1, 7 )

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = - $\frac{4}{3}$ , then

y = - $\frac{4}{3}$ x + c ← is the partial equation

To find c substitute the midpoint (1, 7) into the partial equation

7 = - $\frac{4}{3}$ + c ⇒ c = $\frac{21}{3}$ + $\frac{4}{3}$ = $\frac{25}{3}$

y = - $\frac{4}{3}$ x + $\frac{25}{3}$ ← equation of perpendicular bisector

7 0

3 years ago

1 - 3/10 Write the answer as a fraction

IgorLugansk [536]

Answer:

7/10

Step-by-step explanation:

Get a common denominator

1 - 3/10

10/10 - 3/10

7/10

6 0

3 years ago

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