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umka21 [38]
3 years ago
7

Is the proportion A, B, D, or D?

Mathematics
1 answer:
Oksanka [162]3 years ago
3 0

Answer:

C.)

Step-by-step explanation:

4/20=8/x

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How do you answer a, b and c, answers and also how you worked it out
Kruka [31]

We can either convert to standard form first or convert to a common multiplier, kinda like a common denominator.  The latter makes more sense if they wanted the result in scientific notation, but let's do it that way anyway.

a)

4.5 × 10⁴ + 3.8  × 10³ = 45 × 10³ + 3.8  × 10³ = 48.8× 10³ = 48,800

Answer:  48,800

b)

4.5 × 10⁴ - 3.8  × 10³ = 45 × 10³ - 3.8  × 10³ = 41.2× 10³ = 41,200

Answer:  41,200

c)

7.2 × 10⁻³ + 6.3  × 10⁻² = 7.2 × 10⁻³ + 63  × 10⁻³ = 70.2 × 10⁻³

       = 7.02 × 10⁻² = 0.0702

Answer: 0.0702

4 0
3 years ago
(8x +6) = <br> (8x +6) =<br> 8x=<br> x =
dem82 [27]

Step-by-step explanation:

8x +6° +118° = 180° ( linear pair)

=> 8x = 180°-124°

=> 8x = 56°

=> x = 7°

hope this helps you.

7 0
2 years ago
Please help!! <br> Will mark and star!!
Kamila [148]
The answer is B. please mark me as brainlyest.
3 0
2 years ago
The cost of 10 hot dogs at a hot dog stand is $30. Which graph shows the cost of different numbers of hot dogs at the hot dog st
fenix001 [56]

Answer:

30

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
A right triangle has a base that measure 39 inches and a height that measures 80 inches. What is the length of its hypotenuse?
guajiro [1.7K]
The Pythagorean Theorum formula is a(squared) + b(squared)= c(squared). If you plug in the numbers, the equation is 39(squared) + 80(squared)= c(squared). That simplifies to 1521+6400=c(squared). Adding results in 7921=c(squared). Finally, when you take the square root of both sides, you are left with 89=c (aka the hypotenuse)
5 0
3 years ago
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