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3 years ago

15

What is ? A. 20º B. 70º C. 90º D. 180º

2 answers:

Nana76 [90]3 years ago

7 0

Well it has to add up to 180 So try to figure out the letters like c and b

vesna_86 [32]3 years ago

6 0

Answer:

I'm gunna say C

Step-by-step explanation:

I'm pretty sure its a 90 degree angle

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Does the ordered pair, (1, 5/2) satisfies the given equation<br> 3x-3y=-3 ?

vampirchik [111]

Answer:

Ordered pair, (1, 5/2) does not satisfy the given equation 3x-3y=-3

Step-by-step explanation:

$3x-3y=-3$

Here $(x, y) = (1, \frac{5}{2} )$

$3(1)-3(\frac{5}{2} )=-3$

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2 years ago

I need help with this one please

Mamont248 [21]

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Explanation- divide both sides by 12, then subtract 20.

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2 years ago

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Ede4ka [16]

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3 years ago

StartLayout enlarged left-brace 1st row 4 x minus 5 y = 5 2nd row negative 0.08 x + 0.10 y = 0.10 EndLayout

FinnZ [79.3K]

Answer:

$x = 1.25$

$y = 0$

Step-by-step explanation:

Given

$4x - 5y = 5$

$0.08x + 0.10y = 0.10$

Required

Determine the solution

Make x the subject of formula in: $4x - 5y = 5$

$4x = 5 + 5y$

Divide both sides by 4

$\frac{4x}{4} = \frac{5 + 5y}{4}$

$x = \frac{5 + 5y}{4}$

Substitute $x = \frac{5 + 5y}{4}$ in $0.08x + 0.10y = 0.10$

$0.08(\frac{5 + 5y}{4}) + 0.10y = 0.10$

Solve the fraction

$0.02(5 + 5y) + 0.10y = 0.10$

Open the bracket

$0.1 + 0.1y + 0.10y = 0.10$

$0.1 + 0.2y = 0.10$

Subtract 0.1 from both sides

$0.1-0.1 + 0.2y = 0.10 - 0.1$

$0.2y = 0$

Divide both sides by 0.2

$y =0$

Substitute 0 for y in $x = \frac{5 + 5y}{4}$

$x = \frac{5 + 5*0}{4}$

$x = \frac{5 + 0}{4}$

$x = \frac{5 }{4}$

$x = 1.25$

5 0

3 years ago

18tons 42 pounds divided by 3 = ____tons ____pounds

Otrada [13]

18 tons and 42 pounds divided by 3=6 tons and 14 pounds

5 0

3 years ago