B.

Mathematics

1 answer:

denis23 [38]4 years ago

5 0

Hey!

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Question B:

12 tenths + 9 tenths

~Turn into decimal

1.2 + 0.9

~Add

1.2 + 0.9 = 2.1

~Answer

one(s): 2

tenth(s): 1

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Question C:

3 hundredths + 4 hundredths

Turn into decimal

0.03 + 0.04

~Add

0.03 + 0.04 = 0.07

~Answer

hundredth(s): 7

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Hope This Helped! Good Lucked!

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The sum of three consecutive even integers is -78, what are the integers ?

Digiron [165]

First, you need to analize and understand the problem, then you must choose and strategy. There is a wide variety of strategies to solve a mathematical problem, in this case, you can use the following, which is based on the information given above:
1. You have that the sum of three consecutive even integers is $-78$ , therefore, you can given the variable $x
$ to the first integer, the second even integer is $x+2$ and the third one is $x+4
$ .
2. Calculate x:
 $x+(x+2)+(x+4)=-78$ 
 $3x+6=-78$
 $x=-28
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 $x+2=-28+2=-26
$ 
 $x+4=-28+4=-24
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Therefore, the answer is: $-28,-26,-24
$

5 0

3 years ago

Jessie estimates the weight of her cat to be 10 pounds. The actual weight of the cat is 13.75 pounds. find the percent error.

romanna [79]

Answer:

$\large \boxed{27 \, \%} }$

Step-by-step explanation:

$\begin{array}{rcl}\text{Percent error}&= &\dfrac{\lvert \text{Measured - Actual}\lvert}{ \text{Actual}} \times100 \,\%\\\\& = & \dfrac{\lvert 10 - 13.75\lvert}{13.75} \times 100 \, \% \\\\& = & \dfrac{\lvert -3.75\lvert}{13.75} \times 100 \, \%\\ \\& = & \dfrac{3.75}{13.75} \times 100 \,\%\\\\& = & 0.27 \times 100 \, \%\\& = & \mathbf{27 \, \%}\\\end{array}\\\text{The percent error is $\large \boxed{\mathbf{27 \, \%} }$}$