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4 years ago

Find the algebraic expressions for the perimeter and area of these shapes

Mathematics

1 answer:

Natali5045456 [20]4 years ago

6 0

Perimeter = 14y + 12x

Area = 6xy + 24xy = 30xy

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What is the range of the function?

FinnZ [79.3K]

2, 6, 8) → D

each element in the domain ( - 1, 3, 5) maps to exactly one value in the range (2, 6, 8)

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3 years ago

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In ΔJKL, l = 860 inches, j = 920 inches and ∠K=126°. Find ∠L, to the nearest degree.

fomenos

Answer:

Step-by-step explanation:

JKL= ABC, jkl=abc

1.) use law of sines to find k.

$c^{2} =a^{2} +b^{2} -2abCosC$

$c=\sqrt{920^{2} +860^{2} -2(920)(860)cos(126) } = 1586.225515$

2.) use law of cosines to find L

$\frac{a}{sinA} =\frac{b}{sinB} =\frac{c}{sinC}$

plug in for b and c: $\frac{860}{sinB} =\frac{1586.225515}{sin126}$

cross multiply: $\frac{1586.23sinB}{1586.23} =\frac{860sin126}{1586.23}$

$sinB= 0.4386227612\\B=sin^-1(0.4386227612)= 26.01604086\\$

L=26

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3 years ago

Solve for x<br><br> A. 9<br> B. 10<br> C. 42<br> D. 12

Cloud [144]

Answer:

Option D, 12

Step-by-step explanation:

4x-8=80/2

or, 4x-8=40

or, 4x=48

or, x=12

4 0

3 years ago

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PLEASE HELP ME !!

V125BC [204]

Answer:

$\huge\boxed{\sf The\ co-efficient\ of\ x\ is\ -4.}$

Step-by-step explanation:

Slope = m = -4

Y-intercept = c = -7 ( Because that is the point where x = 0 )

<u>Equation:</u>

$\sf y = mx+c\\\\y = -4 x+(-7)\\\\y = -4x-7$

So, The co-efficient of x is -4.

$\rule[225]{225}{2}$

Hope this helped!

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3 years ago

Arina has a 2/3 quart of milk. she uses 3/4 of it in a cookie recepie. how much milk did ariana used in her recepie?

AleksandrR [38]

Answer:

1/2 a quart of milk

Step-by-step explanation:

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3 years ago

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