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2 years ago

Use a number line to name two numbers that are the same distance apart as 3.2 and 3.8

Mathematics

1 answer:

Ann [662]2 years ago

3 0

Answer:

0.6

Step-by-step explanation:

3.8 - 3.2 = 0.6

________________________

$3.8 - 3.2 = 0.6$

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A 25 foot ladder leans against a house. How far is the foot if the ladder from base if the building if the top of the ladder is

vaieri [72.5K]

Answer:

Step-by-step explanation:

x^2+20^2=25^2

x^2+400=625

x^2=225

x=15

5 0

3 years ago

Sally finds a coin with a radius of 1.5 centimeters and a thickness of 0.25 cm. It has a measured mass of 18.54 grams. How can S

mote1985 [20]

Answer:

Silver

Step-by-step explanation:

Find the volume of the coin

Volume of a cylinder

$\textsf{V}=\sf \pi r^2 h \quad\textsf{(where r is the radius and h is the height)}$

Given:

r = 1.5 cm
h = 0.25 cm

Substituting given values into the formula to find the volume:

$\sf \implies V=\pi (1.5)^2(0.25)$

$\sf \implies V=0.5625 \pi \:cm^3$

Find the density of the coin given it has a measured mass of 18.54 g

Density formula

$\sf \rho=\dfrac{m}{V}$

where:

$\rho$ = density
m = mass
V = volume

Given:

m = 18.54 g
$\sf V=0.5625 \pi \:cm^3$

Substituting given values into the density formula:

$\implies \sf \rho=\dfrac{18.54}{0.5625 \pi}$

$\implies \sf \rho=10.49149385\:g\:cm^{-3}$

Given:

$\textsf{Density of Lead}=\sf 11.3\:g\:cm^{-3}$

$\textsf{Density of Silver}=\sf 10.49\:g\:cm^{-3}$

Therefore, as $\sf \rho=10.49\:g\:cm^{-3}$ the coin is made from silver.

4 0

1 year ago

What is the one-hundredth term in the sequence 14, 19, 24, 29, 34…?

anzhelika [568]

Rule: look at the sequence. It has the last number as 4 then 9 then for. 4 for odd numbers(odd term numbers like number 3,5 so on) so the last number of the 100 term is 9. It’s 509.

8 0

2 years ago

Help with this one please 20 points brain lest and a thanks on your page honestly just giving points away

Kitty [74]

The answer is C.

It has a negative slope (-40) and a y-intercept at 200.

3 0

3 years ago

−4x+7y=20 y=3x+15 Solve the system of equations.

Dmitry_Shevchenko [17]

Answer:

(x, y)=(-5, 0)

5 0

2 years ago