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Katarina [22]
3 years ago
8

Pls I NED HELP ASAP I ONLY HAVE 10 MINUTES

Mathematics
2 answers:
vampirchik [111]3 years ago
8 0

Answer:

20

Step-by-step explanation:

x= 20

3x+5 replace x with 5 than do 3x5=15+5=20

Fed [463]3 years ago
4 0

Answer:

20

Step-by-step explanation:

when a letter and a number are next to each other u have to multiply, so x is 5 so 3 x 5 is 15. 15 plus 5 is 20 so 20 is ur answwer

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Find the area of the polygon.
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Answer:

820 m^{2}

Step-by-step explanation:

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3 years ago
What is the sum of (–2.1x + 3.7) and (5 + 4.9x)?
adoni [48]
Combine like-terms
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3 0
3 years ago
Read 2 more answers
Use the following diagram to find the angle measures of the triangle, rounded to the nearest degree.
nadezda [96]

Answer:

m∠A = 30°

m∠B = 80°

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Step-by-step explanation:

By applying cosine rule in the given triangle,

b² = a² + c² - 2ac[cos(∠B)]

From the given triangle,

a = 14 m

b = 28 m

c = 24 m

(28)² = (14)² + (24)² - 2(14)(24)cos(B)

784 = 196 + 576 - 672cos(∠B)

cos(∠B) = 0.1786

∠B = \text{cos}^{-1}(0.1786)

∠B = 79.71°

∠B = 80°

By applying sine rule in the given triangle,

\frac{\text{sinA}}{a}= \frac{\text{sinB}}{b}= \frac{\text{sinC}}{c}

\frac{\text{sinA}}{14}= \frac{\text{sin(79.71)}}{28}= \frac{\text{sinC}}{24}

\frac{\text{sinA}}{14}= \frac{\text{sin(79.71)}}{28}

\text{sinA}= \frac{\text{sin(79.71)}\times 14}{28}

sinA = 0.491958

A = 29.47°

A ≈ 30°

By applying triangle sum theorem,

m∠A + m∠B + m∠C = 180°

30° + 80° + m∠C = 180°

m∠C = 70°

4 0
3 years ago
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posledela

Answer:

The type of questions that has only one answer.

Step-by-step explanation:

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7 0
3 years ago
What is negative three, times 4x plus 2
alexgriva [62]
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hope this helps 

4 0
3 years ago
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