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meriva
3 years ago
8

Urgent Help math question!

Mathematics
1 answer:
Stella [2.4K]3 years ago
7 0
Answer: Choice A

This is a 3 by 1 matrix, which can be written "3 x 1 matrix". 

There are 3 rows and 1 column. The number of rows is listed first. 
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Which expression can be used to find the price of a $400 telescope after a 32% markup? Select all that apply.
elena-s [515]
<h3>There are 2 answers: choice C, choice D</h3>

====================================================

Explanation:

32% = 32/100 = 0.32

32% of 400 = 0.32*400 = 400(0.32), which adds onto the original 400 to get 400+400(0.32). This is why choice D is one of the answers.

We can factor out the GCF 400 to go from 400+400(0.32) to 400(1+0.32) which then simplifies to 400(1.32) or just 400*1.32. This shows choice C is the other answer. Using a calculator,

400+400(0.32) = 400 + 128 = 528

400*1.32 = 528

meaning that 400+400(0.32) = 400*1.32

The other answer choices result in other values, showing that they aren't equivalent to 528.

6 0
3 years ago
What is the value of the expression below when z=4?<br> 10z-3
77julia77 [94]

Answer:

37

Step-by-step explanation:

10z - 3 = 10(4) - 3

=40-3

=37

3 0
3 years ago
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Find the length of FV
Anna [14]

Answer:

72.47

Step-by-step explanation:

FV cos 43 = TV

FV (0.73135370161 ) = 53

FV = 72.468 = 72.47

6 0
3 years ago
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1.325 to the nearest hundreths
12345 [234]
Its 1.33 because you round up if its 5 or greater
4 0
3 years ago
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Angles A and B are complementary. Two separate angles are shown. Angle A is (x + 22) degrees. Angle B is x degrees. What is the
HACTEHA [7]

Answer: 34

Step-by-step explanation:

(x+22) + x = 90

8 0
3 years ago
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