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4 years ago

Match the equivalent expressions without using a calculator. 3.5 × 10^5 3,500,000

1 answer:

8 0

The exponent is the number of spaces you need to move the decimal point. positive exponent means you move the decimal point that may places to the right:

3.5 x 10^5

Move the decimal point 5 places to the right:

350,000.

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A survey of 391 children given at a local elementary school showed that 150 like chocolate ice cream 225 like pistachio ice crea

ruslelena [56]

i’m pretty sure you mean 16 don’t like ice cream but it would be 95.9% because 150+225=375 and 375 divided by 391= 0.959079.....

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3 years ago

The two largest lizards are the Gila Monster and the Chuckwalla. the average Gila Monster is 0.608 meter long. The average Chuck

Flauer [41]

The Gila Monster is 0.213 than the Chockwalla.

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3 years ago

Jess is 12 years less than half as old as Mac. The sum of their age is 87. How old is each person?

laila [671]

Answer:

The age of each person is:

Jess is 21 years old.
Mac is 66 years old.

Step-by-step explanation:

To solve this problem you must make two equations. First, we name Jess and Mac as variables:

j = Jess age.

m = Mac age.

Now we make the equations, the first equation has the information "Jess is 12 years less than half as old as Mac":

1. $j=(\frac{m}{2})-12$

The second equation has the information "The sum of their age is 87":

2. $j+m=87$

Now, we replace the first equation in the second one:

$(\frac{m}{2}-12) +m=87$

And we operate:

$\frac{m-24}{2} +m=87$
$\frac{m-24+2m}{2}=87$
$\frac{3m-24}{2}=87$

We clear the variable m:

$3m-24=87*2$
$3m=174+24$
$m=\frac{198}{2}$
$m=66$

How we know Mac's age is 66 years old, we can identify Jess' age with the second equation:

$j+m=87$

We replace the value of m:

$j+66=87$

And clear the variable j:

$j=87-66$
$j=21$

In the end, Jess's age is 21 years old.

4 0

3 years ago

What is the volume of the cylinder shown below?

inna [77]

Answer:

Option A

radius = 13 units

height = 20 units

Volume of the cylinder = πr²h

= π (13)² ×20

=3380π cu. units

8 0

4 years ago

Read 2 more answers

Ellie made a cube-shaped cardboard box with side-length s. The area of cardboard she used is given by the formula A = 6s2, wher

xenn [34]

The correct question is
Ellie made a cube-shaped cardboard box with side-length s. The area of cardboard she used is given by the formula A = 6s2, where s represents the side length of the cube.

Which equation correctly solves the formula for s?

we know that
A = 6s²---------> clear the variable s
s²=A/6------> applying square root both members
s=√(A/6)--------> s=(1/6)*√(6*A)

the answer is
s=(1/6)*√(6*A)

4 0

3 years ago