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2 years ago

Hi! i need help finding the area of this shape! thank you

Mathematics

1 answer:

xz_007 [3.2K]2 years ago

4 0

Answer: 7.5

Step-by-step explanation:

5x3 = 15 A = 1 half L x H

A = (3)(5)

A = 15

A = 15 x 1 half = 7.5

correct me if i am wrong.

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4v^2 + 8v + 5 = 10 What would I add to this equation to create a perfect square?

Dvinal [7]

Answer:

v₁ = 2.5; v₂ = 0.5.

Step-by-step explanation:

4v² + 8v + 5 = 10

4v² + 8v + 5 - 10 = 10 - 10

4v² + 8v - 5 = 0

D = 8² - 4 · 4 · (-5) = 64 + 80 = 144

$v_{1} =\dfrac{-8-\sqrt{144} }{2 \cdot 4} =\dfrac{-8-12 }{8} =\dfrac{-20}{8} =-2.5\\\\v_{2} =\dfrac{-8+\sqrt{144} }{2 \cdot 4} =\dfrac{-8+12 }{8} =\dfrac{4}{8} =0.5\\\\$

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3 years ago

Simplify (3x2 - 5x + 3) + (-3x2 + 5x - 3).

zepelin [54]

Answer:

(9 -5x) + (-9 +5x)

Step-by-step explanation:

-Three times two is six plus three is nine

-Negative three times two is negative six minus three which is negative nine

4 0

3 years ago

Read 2 more answers

Three types of tickets for a football game are available: sidelines, goal-view, and upper-deck. The sidelines tickets cost $

Simora [160]

Answer:

Upper deck = $38

Goal View = $63

Sidelines = $88

Step-by-step explanation:

Represent

- Sidelines with S

- Goal-view with G

- Upper-deck with U

We have that:

$S = 25 + G$

$S = 50 + U$

$G = 2U - 13$

Required

Solve for S, G and U

Substitute 25 + G for S in the second equation

$25 + G = 50 + U$

Make G the subject

$G = 50 -25+ U$

$G = 25+ U$

Substitute 25 + U for G in the third equation

$25 + U = 2U - 13$

Collect Like Terms

$U - 2U = -13 - 25$

$-U = -38$

$U = 38$

Substitute 38 for U in $G = 25+ U$

$G = 25 + 38$

$G =63$

Substitute 63 for G in $S = 25 + G$

$S = 25 + 63$

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3 years ago

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Evgesh-ka [11]

Answer:

a=10.8; c=4.3

Step-by-step explanation:

The sum of all the angles in a triangle is 180 degrees.

Two of the angles are given as 40 deg and 120 deg.

Subtract the measures of both from the sum to get the last angle:

180-40-120=20; ∠C=20°

Using Law of Sines: $\frac{a}{sinA}=\frac{b}{sinB}=\frac{c}{sinC}$

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3 years ago

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