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ioda
3 years ago
15

A bag contains green marbles and blue marbles, 40 in total. The number of green marbles is 7 more than 2 times the number of blu

e marbles. How many green marbles are there
Mathematics
2 answers:
beks73 [17]3 years ago
4 0
X represents blue and green is 7 more than 2 times in total there are 40 
so
40=x+2x+7
40=3x+7
33=3x
x=11
now plug in x into 2x+7
2*11+7= 29

kherson [118]3 years ago
3 0
Hey I had this same question yestarday,

You go to k12 right?

Markk me brainliest 

So one easy way to do it. How I do it is. 7*2*2 which will give you 28 round 28 in the tens will give you 29.

Hope that was helpful have a great day

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Pleaseeeee help with this! Thank you so much!
algol [13]

Answer:

≈ 7.85 cm

Step-by-step explanation:

The area (A) of a circle is calculated as

A = πr² ( r is the radius )

given A = 225π , then

πr² = 225π ( divide both sides by π )

r² = 225 ( take square root of both sides )

r = \sqrt{225} = 15

the arc length is calculated as

arc = circumference × fraction of circle

      = 2πr × \frac{30}{360}

      = 2π × 15 × \frac{1}{12}

      = 30π × \frac{1}{12}

      = \frac{30\pi }{12}

      ≈ 7.85 cm ( to 2 dec. places )

6 0
2 years ago
How do I determine the measure of each missing angle?
algol [13]
Minus 78 by 55 to get 23 as the measure for P.
7 0
4 years ago
Find the midpoint of the segment with the following endpoints.<br> (-9, -5) and (-1, -9)
IrinaK [193]

Answer:

The answer is

<h2>( - 5 \: , \:  - 7)</h2>

Step-by-step explanation:

The midpoint M of two endpoints of a given line segment can be found by using the formula

<h3>M = ( \frac{x1 + x2}{2}  , \:  \frac{y1 + y2}{2} )</h3>

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(-9, -5) and (-1, -9)

The midpoint M is

<h3>M = ( \frac{ - 9 - 1}{2}  , \:  \frac{ - 5 - 9}{2} ) \\  = ( -  \frac{10}{2} , \:  -  \frac{14}{2} )</h3>

We have the final answer as

<h3>( - 5 \: , \:  - 7)</h3>

Hope this helps you

5 0
3 years ago
Trapezoid ABCD is shown. What is the length of diagonal BD?
Likurg_2 [28]

Answer:

10 I think-

Step-by-step explanation:

hope this helped :D

This may be right, this may be wrong

6 0
3 years ago
PLZ HURRY I WILL MARK BRAINLIEST
MariettaO [177]

Answer:

multiplication property of equality

Step-by-step explanation:

To solve this you would need to use multiplication

6 0
3 years ago
Read 2 more answers
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