3 years ago

Help please, i really need this

Mathematics

1 answer:

Licemer1 [7]3 years ago

4 0

Answer:

i think a

Step-by-step explanation:

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Two new devices for testing blood sugar levels have been developed. How do these devices compare? You test blood sugar levels of

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Answer:

The matched pairs t test.

Step-by-step explanation:

You test blood sugar levels of 20 diabetics with both devices and use B. the matched pairs t test.

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3 years ago

How many solutions does 25-4x=15-3x+10-x have

Sergeeva-Olga [200]

25 - 4x = 15 - 2x + 10
-10 - 10
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no solution

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3 years ago

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20 POINTS!! Betty arranged equal numbers of movies on four shelves of a shelving unit and placed 6 of her favorite movies on the

Bess [88]

Answer:

54 movies

Step-by-step explanation:

shelving unit has 4x + 6 movies

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3 years ago

Claire purchases a new dress for the prom. The dress is priced $160, but it is on sale for 30% off. Claire’s aunt works at the s

djverab [1.8K]

Answer:

$Total = \$103.20$

Step-by-step explanation:

Given

$Amount =\$160$

$D_1 = 30\%$ --- first discount

$D_2 = 10\%$ --- second discount

$Sales\ Tax = 7.5\%$

Required

Determine the amount paid

First, we add the total discount:

$D = D_1 + D_2$

$D = 30\% + 10\%$

$D = 40\%$

If she got a discount of 40%, then she paid 60% (i.e. 100% - 40%)

So:

$Amount = 60\% * \$160$

$Amount = \$96$

Calculate the sales tax

$Sales\ Tax = 7.5\% * \$96$

$Sales\ Tax = \$7.2$

$Total = \$96 + \$7.2$

$Total = \$103.20$

3 0

3 years ago

Find the area of each composite figure. Use 3.14 for π. Round to the nearest tenth if necessary. Whats the correct label?

Leto [7]

Answer:

i dont think this is wright but i got 48

Step-by-step explanation:

5 0

3 years ago