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2 years ago

5

Devon took a total of 4pages of notes during 2 hours of class at this rate how many hours will devon have to spend in class befo

re she will have a total of 14pages of notes in her notebook

1 answer:

AfilCa [17]2 years ago

6 0

Answer:

7

Step-by-step explanation:

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Can someone please help me with this one question please??

Alenkasestr [34]

((5x2)+5.5+(6x3)+6.5+(7x5)+(7.5x4)+(8x4))/20
137/20
= 6.85

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2 years ago

Find the measure of

Goryan [66]

What are you talking about

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2 years ago

Read 2 more answers

What is the value of y in this system of equations: 3x + y = 9 y = –4x + 10 ?

Ahat [919]

<span>3x + y = 9 (I)
</span><span>y = –4x + 10 (II)
------------------------
</span> $\left \{ {{3x + y = 9 } \atop {y = -4x + 10 }} \right.$

Pass the incognito "4x" to the first term, changing the signal when changing sides.
<span>-------------------------
simplify by (-1)
</span> $\left \{ {{3x + y = 9.(-1)} \atop {4x + y = 10 }} \right.$ <span>

-------------------------
</span> $\left \{ {{- 3x - \diagup\!\!\!\!y =-9} \atop {4x + \diagup\!\!\!\!y = 10}} \right. 
$
<span>
-------------------------
</span> $\left \{ {{- 3x = - 9} \atop {4x = 10}} \right.$ <span>

-----------
</span> $\boxed{x = 1}$ <span><span>

</span></span><span>Substitute in equation (I) to find the value of "Y".

</span>3x + y = 9 (I)
3*(1) + y = 9
3 + y = 9
y = 9 - 3
$\boxed{y = 6}$

Answer:
$\boxed{\boxed{ \left \ {{x=1} \atop {y=6}} \right. }}$

6 0

2 years ago

What's the answer to 9x+2y=49

STatiana [176]

x= 49/9 − 2y/9

Step-by-step explanation:

Move all terms that dont contain x to the right side and solve. (I solved for x i hope thats what you needed. Next time be a little more detailed. (: )

8 0

2 years ago

Find the Area of the figure below, composed of a rectangle with two semicircles removed. Round to the nearest tenths place.

Allisa [31]

Answer:

21.8

Step-by-step explanation:

hii so basically first we find the area of the 9 by 8 and subtract the area of the semicircles.

area of circles are πr^2, so in this situation

π4^2 which is 16π.

with this, the semicircle which is half a circle would give us

16π/2 which is 8π.

but then, we have two semicircles removed so we would have as an answer:

(9*8)-8π+8π

72-16π

then you would have to round so

16π is around 50.2

so 72-50.2 is 21.8

i hope this helped you <33

6 0

2 years ago