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2 years ago

Th

Mathematics

1 answer:

timama [110]2 years ago

8 0

Answer:

<h2> b) 10 years</h2>

Step-by-step explanation:

1/20 of 700: 1/20•700 = 35

700 + n•35 = 1050

n•35 = 350

n = 10

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Please help me answer these 2 questions, worth lots of points

alexgriva [62]

For the first one, to find x, you are going to take that entire side which would equal to 180 and solve. 2x+20+55=180 would then go down to 2x+65=180 once you add the 20 and 55. Then subtract 65 to both sides and divide your final answer 115/2 which is x=57.5. For the second one it’s 4x-2+21=180, then you will subtract 2 from 21 and get 19. After you would subtract 19 by 180 and divide 4 by each side, getting x=40.25 as your final answer.

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2 years ago

Solve the system: <br> 2x+6y=36<br> x+4y=20

Assoli18 [71]

<u>Let's solve this problem step-by-step</u>

<u>Let's set</u>:

2x + 6y = 36 -- equation 1

x + 4y = 20 -- equation 2

(equation 2) * 2

2x + 8y = 40 -- equation 3

(equation 3) - (equation 1)

2y = 4

y = 2 -- equation 4

Plug (equation 4)'s value of y into (equation 2)

x + 4(2) = 20

x = 20 - 8

x = 12

<u>Let's check, by substituting these values</u>

$2x + 6y = 36\\2(12)+6(2) = 36\\24+12=36\\36=36\\\\x+4y=20\\12+4(2)=20\\12+8=20\\20=20$

<u>Answer: x = 12 and y = 2</u>

Hope that helps!

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2 years ago

How would you graph, y=-x-2

Natali5045456 [20]

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3 years ago

What is the product?<br><br> (5.63 x 10^5) x 5,600,000

victus00 [196]

Answer: $3.1528 \times 10^{12}.$

Step-by-step explanation: Given expression $(5.63 \times 10^5) \times 5,600,000$ .

In order to find the product of given expression, we need to convert 5,600,000 into scientific notation, because other number is also in scientific notation.

5,600,000 = 5.6 × 10^6.

Therefore, $(5.63 \times 10^5) \times 5,600,000 =(5.63 \times 10^5) \times (5.6 \times 10^6)$ .

Now, multiplying 5.63 × 5.6 first, we get 31.528.

And 10^5 × 10^6 = 10^11.

Therefore,

$(5.63 \times 10^5) \times (5.6 \times 10^6) = 31.528 \times 10^11$ .

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2 years ago

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S_A_V [24]

Answer:

C is correct

Step-by-step explanation:

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2 years ago