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3 years ago

This month

Mathematics

1 answer:

Rudik [331]3 years ago

6 0

11%= 0.11 and 8%= 0.08

0.11 x 67,530=7,428.3
0.08 x 85,740 = 6,859.2
so person A made more than person b

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Given: AB ∥ DC

RSB [31]

Answer:

$A=1,720.16\ units^2$

Step-by-step explanation:

we know that

The area of the trapezoid is equal to

$A=\frac{1}{2}(DC+AB)DE$

step 1

Find the measure of angle DAE

m∠ADC+m∠DAE=180° -----> by consecutive interior angles

we have

m∠ADC = 134°

substitute

134°+m∠DAE=180°

m∠DAE=180°-134°=46°

step 2

In the right triangle ADE

Find the length side AE

cos(∠DAE)=AE/AD

$AE=cos(46\°)(40)\\AE=27.79\ units$

step 3

In the right triangle ADE

Find the length side DE

sin(∠DAE)=DE/AD

$DE=sin(46\°)(40)\\DE=28.77\ units$

step 4

Find the area of ABCD

$A=\frac{1}{2}(DC+AB)DE$

we have

$DC=32\ units\\AB=DC+2(AE)=32+2(27.79)=87.58\ units\\DE=28.77\ units$

substitute

$A=\frac{1}{2}(32+87.58)28.77$

$A=1,720.16\ units^2$

5 0

4 years ago

Jessica purchased a DVD that was on sale for 12% off. The sales tax in her county is 3%. Let y represent the original price of t

Pepsi [2]

Answer:

0.88%y + 0.03%

Step-by-step explanation:

if it's 12% then: she's actually paid 88% with a tax of 3%.

4 0

3 years ago

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Si un gramo de chocolate vale$38.25¿cuánto costarán 750 gramos?

Anna007 [38]

Answer:

28687.5

Step-by-step explanation:

Un gramo equivale a $38,25, por lo que si tenemos 750 de esos gramos, tendríamos que multiplicarlos para obtener el costo total.

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2 years ago

Can someone help me with this question please? fast though. i don't have a lot of time

alex41 [277]

Ok what's your quit-ionbro I will help

5 0

3 years ago

When 3(2x + 9) = 4x - 7 is solved for X, the solution is 1 3. is 17 4 xs-17

lyudmila [28]

$\\ \sf\longmapsto 3(2x+9)=4x-7$

$\\ \sf\longmapsto 6x+27=4x-7$

$\\ \sf\longmapsto 6x-4x=-7-27$

$\\ \sf\longmapsto 2x=-34$

$\\ \sf\longmapsto x=17$

8 0

3 years ago

Read 2 more answers