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3 years ago

8x + y = 9 Convert the following equations to standard form

Mathematics

1 answer:

Citrus2011 [14]3 years ago

5 0

Answer:

x=1/8y+9/8

y=y=−8x+9

Step-by-step explanation:

Let's solve for y.

8x+y=9

Step 1: Add -8x to both sides.

8x+y+−8x=9+−8x

y=−8x+9

Let's solve for x.

8x+y=9

Step 1: Add -y to both sides.

8x+y+−y=9+−y

8x=−y+9

Step 2: Divide both sides by 8.

8x/8=−y+9/8

x=−1/8y+9/8

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stellarik [79]

B+c is 16
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4 years ago

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Felicia bought a jackhammer priced at $8.48. The total price, including sales tax, was $9.73. What was the sales tax percentage?

lys-0071 [83]

Answer:

14.7%

Step-by-step explanation:

GIVEN: Felicia bought a jackhammer priced at $\$8.48$ . The total price, including sales tax, was $\$9.73$ .

TO FIND: What was the sales tax percentage.

SOLUTION:

Price of jackhammer $=\$8.48$

Total price including sales tax $=\$9.73$

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4 years ago

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3 years ago

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Calculate the area shaded. To three decimal places

Georgia [21]

Answer:

$\approx 116 \: {cm}^{2}$

Step-by-step explanation:

Radius of the internal circle $r_1=2.3 \: cm$

Radius of the external circle $r_2=6.5 \: cm$

Area of the shaded region = Area of external circle - Area of internal circle.

$= \pi r_{2}^{2} - \pi r_{1}^{2} \\ \\ = \pi \{ r_{2}^{2} - r_{1}^{2} \} \\ \\ = \pi \{ (6.5)^{2} - (2.3)^{2} \}\\ \\ = 3.14\{ (6.5 + 2.3) (6.5 - 2.3) \}\\ \\ = 3.14\{8.8 \times 4.2 \}\\ \\ = 116.0544 \\ \\ \approx 116 \: {cm}^{2}$

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2 years ago

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Oksi-84 [34.3K]

Answer:

≈1.4

Step-by-step explanation:

Technically, 1.4 time 1.6 equals 2.24, but if you put the about equal, it should be counted correct.

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3 years ago