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Paha777 [63]
4 years ago
12

Here are two rectangles.

Mathematics
1 answer:
Sophie [7]4 years ago
6 0

Answer:

AB=9.5\ cm

Step-by-step explanation:

step 1

Find the length side PQ

we know that

The area of rectangle PQRS is given by

A=(PQ)(QR)

A=66\ cm^2

so

66=(PQ)(QR)

substitute the value of QR

66=(PQ)(12)

solve for PQ

PQ=66/12\\PQ=5.5\ cm

step 2

Find the length side AB

we know that

The perimeter of rectangle ABCD is given by

P=2(AB+BC)

we have

P=30\ cm\\BC=PQ=5.5\ cm

substitute

30=2(AB+5.5)

solve for AB

15=AB+5.5\\AB=15-5.5\\AB=9.5\ cm

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Answer:

9/10

Step-by-step explanation:

40+50=90

90/100

9/10

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6 0
3 years ago
A line goes through the points (-4,6) and (-2,3). A line perpendicular to<br> that line is:
gulaghasi [49]

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5 0
3 years ago
Please helo me ASAP!!!
navik [9.2K]

Answer:

17.6

Step-by-step explanation:

Formula= sumfx÷sumf

sumfx= 63×0+34×0+27×1+13×2=53

sumfx=0+0+1+2=3

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3 0
3 years ago
Read 2 more answers
Elijah was analyzing the trajectory made after throwing a football. His coach was able to measure that his throw reached a maxim
ziro4ka [17]

Answer:


Step-by-step explanation:

Given that Elijah threw a ball from a height of 4 feet.  The ball reached maximum height of 16 feet after 2seconds

Let vertical component of his speed be v

When it reaches maximum height its velocity becomes 0

Hence

height reached by the ball =h=vt-\frac{gt^2}{2}

When h=12(16-4) we get g=gravity =32

Hence 12 =2v-16(4)

v=38

Hence h=38t-\frac{32t^2}{2}

where h is calculated from the height of hand i.e. 4 feet

When it touches the ground h =-4

When it starts falling then distance travelled = 16 feet

Initial velocity =0 Accn due to gracity =32 feet

Using these we can write

16=0+\frac{32t^2}{2}\\ t=1

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8 0
3 years ago
Can someone please help me with this. Show your work please.<br><br> -2x² - 5x<br> if x = -4
Ierofanga [76]

Answer:

-2x^2 - 5x

= -2-4^2 - 5*-4

= -2(-4 * -4 ) - (-20)

= -2(-16) +20

= -32 + 20

= -12

Step-by-step explanation:

6 0
4 years ago
Read 2 more answers
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