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VMariaS [17]
3 years ago
5

Two angles are complementary. The measure of ∠ABC is x° and the measure of ∠DBC is (3x + 20)°. What is the value of x? pls help

asap
Mathematics
1 answer:
vazorg [7]3 years ago
6 0

Answer:

x = 17.5°

Step-by-step explanation:

complementary means their sum is 90°.

x + 3x + 20° = 90°

4x = 70°

x = 17.5°

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FrozenT [24]

Answer:

Total items = $39.90

Sales tax amount = $3.7905

Total cost = $43.691

The clerk's error is using 9.5 as sales tax amount instead of finding 9.5% of the total items

Step-by-step explanation:

Dress = $24.95

Skirt = $14.95

steps the clerk completed.

Step 1: 24.95 + 14.95 = 39.90

Step 2: 39.90 +9.5 = 49.40

Correct steps:

Total items = dress + skirt

= $24.95 + $14.95

= $39.90

Sales tax = 9.5%

Sales tax amount = 9.5% of total

= 9.5/100 × $39.90

= 0.095 × 39.90

= $3.7905

Total cost = Total + sales tax amount

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To the nearest hundredth

= $43.691

Sales tax is the amount of money imposed by government on the sales of some items

Total cost is the cost of all items including sales tax

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<h3><u>Given</u>:-</h3>

\rightarrow Side(a) of the cube = \sf{\frac{1}{3}ft}.

<h3><u>To Find</u>:-</h3>

\rightarrow Surface Area of the cube with side \sf{\frac{1}{3}ft.}

<h3><u>Formula Used</u>:-</h3>

\rightarrow Surface area of cube = \sf{6a^2}

<h3><u>Solution</u>:-</h3>

\rightarrow Surface area of cube = \sf{6a^2} (putting the value of a from the above given)

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\rightarrow \sf{=\:\frac{6}{9}}

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Therefore, surface area of the given square = \sf{=\:\frac{2}{3}ft^2}

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