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4 years ago

Calculate the area of this parallelogram.

Mathematics

1 answer:

salantis [7]4 years ago

4 0

Answer:564

Step-by-step explanation:

18.8*20=564

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I need help! Quick please! A. 10 B. 70 C. 85 D. 90

tigry1 [53]

Answer: b:70

Step-by-step explanation:

x^2=100

100 - (2*10 + 2*5 )= 100 - (20 + 10)

100 - 30 = 70

YAY! 70!

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3 years ago

In the figure below, m∠1 = x and m∠2 = x - 8. Which statement could be used to prove that x = 49?

Tatiana [17]

Answer:

option C can be used.

Step-by-step explanation:

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2 years ago

I need help with this problem.

raketka [301]

Pre image
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B:1,-2
C:3,-5
D:7,-1

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3 years ago

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3 years ago

Solve the system of equations by substitution. 3/8 x + 1/3 y =17/24 and x + 7y = 8

goblinko [34]

$\left \{ {{ \frac{3}{8}x+ \frac{1}{3}y = \frac{17}{14} } \atop {x+7y=8}} \right.$

To solve this system by substitution, first isolate x in the second equation.

$x+7y=8$
$x+7y-7y=8-7y$
$x=8-7y$

Now, plug this expression ( $8-7y$ ) for x in the top equation to solve for y.

$\frac{3}{8} (8-7y)+ \frac{1}{3} y= \frac{17}{14}$
$3- \frac{21}{8} y+ \frac{1}{3} y= \frac{17}{24}$
$72-63y+8y=17$
$72-55y=17$
$-55y=17-72$
$-55y=-55$
$y=1$

Now that you have y, plug it into the second equation and solve for x.

$x+7y=8$
$x+7(1)=8$
$x+7=8$
$x=1$

Last step is to plug your x- and y-values in to both equations to check your work.

$\frac{3}{8} (1)+ \frac{1}{3} y= \frac{17}{24}$

$\frac{3}{8} * \frac{3}{3} = \frac{9}{24} ; \frac{1}{3} * \frac{8}{8} = \frac{8}{24}$

$\frac{9}{24} + \frac{8}{24} = \frac{17}{24}$ <--True

$1+7(1)=8$
$1+7=8$ <--True

Answer:
$x=1 \\ y=1$

5 0

4 years ago