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3 years ago

Help me plz for number 14 a-d

Mathematics

1 answer:

Svetllana [295]3 years ago

6 0

The answer for number A would be 1/3

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Find the percent of change for the following:

Inessa05 [86]

Answer:

Step-by-step explanation:

3% increase

6% decrease

18% increase

4 0

3 years ago

Read 2 more answers

PLEASEEEE HELPPP MEEE <br> 6 and 7 PLEASE

Nitella [24]

Answer:

Question 6

$\left(5a+2\right)\left(a+4\right)=\:5a^2+22a+8$

Question 7

The width is 2x.

Step-by-step explanation:

Question 6)

Expand

$(5a+2)(a+4)$

solving to the expand

$(5a+2)(a+4)$

$\mathrm{Apply\:FOIL\:method}:\quad \left(a+b\right)\left(c+d\right)=ac+ad+bc+bd$

$a=5a,\:b=2,\:c=a,\:d=4$

so the expression becomes

$=5aa+5a\cdot \:4+2a+2\cdot \:4$

$=5aa+5\cdot \:4a+2a+2\cdot \:4$

$=5a^2+20a+2a+8$

adding similar elements: 20a+2a=22a

$=5a^2+22a+8$

Hence,

$\left(5a+2\right)\left(a+4\right)=\:5a^2+22a+8$

Question 7)

Given

$A\:=\:8x^2$

$l=4x$

Using the formula

width = Area/Length

$=\:\frac{8x^2}{4x}$

$=2x$ ∵ $\mathrm{Divide\:the\:numbers:}\:\frac{8}{4}=2$

Therefore, the width is 2x.

5 0

3 years ago

Solve by elimination <br> 5x-2y=11 <br> -5x-3y=14

babymother [125]

Y= -5 and x= 1/5

hope it helps!

6 0

3 years ago

50 is ____________ times as large as 5.

coldgirl [10]

Answer: 10

Step-by-step explanation:

3 0

3 years ago

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Using the parallelogram pictured, find the length of the shorter diagonal. Round your answer to the nearest inch.

Tpy6a [65]

Answer:

21 in

Step-by-step explanation:

The law of cosines is helpful for this. The angle opposite the shorter diagonal is the supplement of the angle shown, so is 60°.

If we designate the known sides as "a" and "b", the short diagonal as "c" and the smaller angle as C, then the law of cosines tells us ...

c^2 = a^2 + b^2 -2ab·cos(C)

For the given dimensions, we have ...

c = √(15^2 +24^2 -2·15·24·cos(60°)) = √441 = 21 . . . inches

5 0

3 years ago