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Zepler [3.9K]
3 years ago
7

if a jar of coins contains 40 half dollars and 200 quarters, what is the monetary value of the coins? (Show all work)

Mathematics
1 answer:
diamong [38]3 years ago
4 0
40x50=2000
200x25=5000
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In right triangle DEF, ∠E is a right angle, m∠D=26∘, and DF=4.5.
jok3333 [9.3K]

Answer:

The measurement of EF is 1.98 units

Step-by-step explanation:

In Δ DEF

∵ m∠E = 90°

∴ FD is the hypotenuse of the triangle

∵ m∠D = 26°

∵ EF is opposite to angle D

- We can use the sine ratio to find it

∵ sin D = \frac{EF}{FD} ⇒ (opposite side / hypotenuse)

∵ FD = 4.5 units

∴ sin(26) = \frac{EF}{4.5}

- Multiply both sides by 4.5

∴ 4.5 sin(26) = EF

∵ sin 26° ≈ 0.44

∴ 4.5(0.44) = EF

∴ 1.98 = EF

The measurement of EF is 1.98 units

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3 years ago
Graph the function defined by the parametric equations x = 2t3 – 3t and y = -2t2 – 1 over the parameter
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Answer:

  see attached

Step-by-step explanation:

A graphing calculator does this nicely.

4 0
2 years ago
I need help with this problem
marishachu [46]

True

∠2 and ∠5 are both vertical at the vertex of the 2 straight lines



7 0
3 years ago
How to divide fractions with whole numbers?
ad-work [718]
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The length of the flagpole is ?
Flauer [41]

The length of the flagpole is x - 5 yards

<h3>Area of a square</h3>

The formula for calculating the area of the flagpole is expressed as:

A = L²

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Factorize

A = x² - 5x - 5x + 25

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Hence the length of the flagpole is x - 5 yards

Learn more on area of a square here: brainly.com/question/13389992

#SPJ1

4 0
1 year ago
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